Dipole antenna calculatorWhen the length of antenna is a whole wavelength Antenna length wavelength frequency does why[get 45+] dipole. a, b, h = Cavity width, length, height in mm/cm/Inch. It is also called Equivalent Isotropic Radiated Power. This calculator will help you calculate the guided wavelength, provided the dimensions of the microstrip are given as well as the velocity of propagation, the microstrip material's dielectric constant, and the input frequency. So, for example, for a frequency of 433 MHz, the approximate 1/4 wavelength would be around 173. Fairview Microwave's TEM (Transverse Electromagnetic Mode) Wavelength Calculator allows you to determine the wavelength (in millimeters) inside a rectangular wave guide given the frequency and dielectric constant (or VoP) of the input signal. To fully understand the results obtained by this calculator, please take a few minutes to read the. This website was last updated. **Note: All of our. This parameter is used for the loss calculations. This blog post provides the formulas and an Excel spreadsheet. This distance is denoted by R. A complete range of radio frequency calculators, including metric-standard, link budget, coax cable, power, attenuation, frequency and plenty others, provide you with the correct figures that you need for all your RF, microwave and. However, this can be automatically. I do remember that the size of the mesh is tied to the wavelength of the frequencies you want to attenuate. The antenna factor describes the connection between the electric field intensity E around the antenna and the antenna's voltage output V. 492 comes from multipling the frequency by the distance of a 1/2 wavelength. One for feet and the other for meters. 65 figure, then look up the data sheet for the speed of signals in your specific type of cable. 4126a, so the. Pasternack's RF calculators and conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. As a rule of thumb, a hole size of less than one-tenth of the wavelength is a good starting point. EIRP Calculator. Target range. The microstrip is a very simple yet useful way to create a transmission line with a PCB. It will also show you what the. 99792458 * 10 8 meters/second. Amplifiers Amplifiers. The frequency and the wavelength are intimately related, so the operating frequency has just as much to do with the via spacing as the wavelength does. In telecommunication, the free-space path loss (FSPL) (also known as free-space loss, FSL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight (LoS) path through free space (usually air). Operating Frequency. microwave ovens work at a wavelength of about 10 cm. RF Amplifier PAE Calculator; RF Transformer Calculator; Specific Absorption Rate (SAR) Calculator. Other uses include acoustic measurement and adjustment, microphone placement, room tuning, and speaker positioning. The gigahertz [GHz] to wavelength in nanometres [nm] conversion table and conversion steps are also listed. The Wavelength from Frequency calculator computes the wavelength (λ) based on the RF frequency (ν) and the speed of light (c). λ=wavelength in meters t=thickness Round apertures do not use the same formula. e. Figure 3. The formula was derived by Herald T. The Friis transmission equation gives the power received by an antenna from another antenna that is transmitting a known amount of power at a distance under ideal conditions. Since the area of the sphere of radius (r). RF Calculator This general RF calculator provides path loss, VSWR and wavelength as well as conversions between many common measurements used in the wireless. Try our […] Pasternack online RF calculators , conversions and formulas are well suited for radio frequency designers and engineers who need answers to complex RF questions. Find more Physics widgets in Wolfram|Alpha. λ - Wavelength. Recommended Operating Frequency Range (TE 10) EIA (GHz) Min. If you measure the hole diameters in the screen that sits in front of the window in the door of the oven, you'll have your answer. 3kHz to 11. 3. Also, in the question Should a Faraday cage. Our waveguides are low loss transmission lines capable of handling high power with high isolation. With specific circuit designs, the calculator also predicts other properties such as wavelength in the circuit, skin depth and thermal rise above ambient. 9, 299. The length of a half-wavelength dipole can be calculated by the given formula: L =. r is the contribution from the RF components between the antenna and the receiver – Temperature of RF components • L r is the loss of input RF components. εr (relative permittivity) This is a required field. 1-866-PASTERNACK (1-866-727-8376) US and Canada only • +1-949-261-1920 International • Email sales@pasternack. The relationship between wavelength and radio frequency is mentioned below. To maximize signal strength between the transmitter and receiver, the antenna installer needs to keep the obstruction-free direct transmission. 13mm (depends on manufacturer's specs) and you get a trace width of ~0. 95 = 33 cm (which is what the computation gives us) The actual formula for length (L) in feet of the half wave dipole is: L = 492 / f. To use the calculator, enter the desired operating frequency in megahertz to get a starting length in both feet and meters for building a quarter-wave vertical antenna . ν = frequency ε r = relative permittivity A table of calculated values can be found here: Frequency - Wavelength Conversion Table Here are some familiar objects and their equivalent wavelength-related frequencies in air: Hummer H2 (189. This page convert and calculate wavelength. This calculator calculates the maximum range of a radar based on the power transmitted, system gain and receiver sensitivity. MHz. This calculation is different for coax, waveguide, microstrip or any other transmission line structure. Wavelength and Frequency is described by this equation: λ = v/f. This term is used in technical disciplines such as radar. A quarter wave transformer is used to match two transmission lines with different impedances. Standing waves are waves of voltage and current which do not propagate (i. Also note that the gain equation is optimized for small angles - see derivation of wavelength portion of equation [7]. Enter the input and output impedances to be matched and the centre frequency. TX Output Power and RX Sensitivity need to set up based on the radio device’s actual link parameters based on the data sheet. I leave it to other sources to provide the complex equations needed to precisely model coaxial cables. Radio Frequency Power Conversion Calculator . The width of the conducting layer is important to calculate the radiation intensity since it directly affects. 96 m 5. a = outside radius of inner conductor (inches) b = inside radius of outer conductor (inches) c = speed of light in a vacuum = 299,792 km/s = 186,282 mi/s. User assumes all risks for its use. 1 Wavelength and how to measure a “wave’s length” In the world of RF and antennas, wavelength is a physical length of an electromagnetic wave measured at the same point at each cycle of the oscillating EM fields radiating out from the antenna. Wavelength Calculator. Noise Temperature to Noise Figure Converter. 5 feet. This impedance is used to calculate the depth ( D) into the patch antenna. This tool will also compute the resistance of the microstrip, the voltage drop, and the power. 5 Ohms Whip Antenna Formula. This Doppler effect calculator is a simple tool to determine the apparent frequency or observed frequency of a wave when its source or the receiver is in motion: Enter the emitted frequency value. Frequency. MICROWAVE CALCULATOR Free Mobile App for RF/Microwave Engineers. There are usually four radials, three being a minimum, but you could use up to six. The formula used in the Far-Field Calculator is: d F = λ 2 ⋅ D 2 Example. This online plane wave calculator calculates the phase velocity Vp (m/s), wavelength λ (meter (s)), and wave impedance (Ω) of the plane wave by entering the value of relative permittivity (εr), relative permeability (μr) of the medium, and frequency (MHz/GHz). Instant free online tool for gigahertz to wavelength in nanometres conversion or vice versa. 2. I calculate one wavelength of that twinlead on 20m as VF*c/f = 0. 4mm PCB for a trace width of 0. n = Fresnel Zone number (>0) λ = c/f = wavelength. Wavelength Calculator. 3/4 λ. The depth at which the amplitude of the wave is reduced to 1/e ( about 0. 10 -3. Wavelength. Understanding beamwidth and how it influences a test. Here is a handy table of frequency values with their equivalent wavelengths in free space (vacuum), calculated to 4 significant figures. c is the speed of light 299,792,458 m⋅s −1,. TX Power. mcalculator - android-design. 4 MHz (in free space). Due to the three-dimensional propagation of radar waves, frequency hold the highest weight in determining range. 3kHz to 11. I've learned recently that lower frequency radio waves travel farther and have better object penetration than their higher frequency counterparts. What is the wavelength of a radio wave (RF wave)? The wavelength of a radio wave depends on the frequency at which it travels. 2. If you have no particular preference within a given ham radio band, then simply enter its center frequency (i. The ITU Radio Frequency to Wavelength conversion tool allows you to enter a frequency from 8. Gain. With hundreds of coaxial RF cables in-stock and ready to ship worldwide immediately, our coax capacitance calculator lets you calculate the impedance of a coax by allowing you to enter the outer diameter dielectric width and inner conductor diameter. Note: If you select a waveguide size from the dropdown below, the broad wall width will be automatically calculated. Enter the Frequency to be converted. Take the square root of the value from step 2. The following table provides conversions for wavelength (from frequency), VSWR (from forward and reflected power) and various other useful conversions. RF wavelength calculations can be made quite simple with two basic formulas. 14. A microstrip width calculator can calculate the width of a microstrip. 14. 62607015E-34 m² · kg/s. Stack Exchange Network. This tool converts from Wavelength in nm, um, mm, cm, m, inches or feet to Frequency in. Figure 2 wavelength formula triangle. 2. Input both parameters in the resonant frequency formula: f = 1 / (2π × √ (L × C)). This calculator computes quarter-wave, half-wave, 3/4-wavelength and full-wave dimensions of the coaxial cable segment knowing inner insulation material. This free online wavelength calculator helps you identify the relationship between frequency and wavelength. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. Frequency Wavelength Calculator. TEM Wavelength Calculator. I expect it will require a transmit signal attenuation of about 40 dB, to hide a card. This calculator is designed to calculate the signal wavelength in transverse electromagnetic mode if the dielectric constant or the velocity of propagation is known. This dipole antenna calculator determines the size of a simple dipole antenna for a given frequency and the dipole wire diameter. Doppler effect is widely used in medicine – it allows us to measure the blood flow in arteries and veins, perform ultrasound, and it also has a great purpose when dealing with how to calculate cardiac output with echocardiography doppler. How do you calculate radiated energy? The radiated energy can be calculated using the formula: Energy (J)=Power (W)×Time (s)Energy (J)=Power (W)×Time (s). 4 *. How is the turn ratio calculated? The turn ratio of the RF transformer is calculated by using the following formula. To calculate the wavelength of a periodic oscillating motion, given the frequency, you first need to know the speed of the wave. 2. Simple RF Range Calculator provides fast and accurate result as the customer selected the frequency band and set TX and RX parameters. Provide the value for the wave velocity in the medium. 1 dBm. Frequency (ν): The calculator returns the frequency in hertz. Calculating skin depth requires the frequency of the AC signal and the resistivity and relative permeability of the conductive material. Wavelength and frequency are related by the. Our RF calculators and converters will provide the figures you need for your radio frequency engineering needs. $endgroup$ –Calculate the length of quarter wave antenna for transmission frequency Check Details Antenna calculator length quick dxzone excel xls spreadsheet checks elements trim really much simple way. 4 GHz and 5 GHz bands. 6 W/kg). The Line of Sight calculator will determine both the "line of sight distance" and "radio horizon / service range" of an antenna placed at a specific height above the ground, represented by "antenna height (h)" in this equation. Wavelength. calculators. As the name suggests, the length of this transmission line if fixed at a quarter of the wavelength (λ/4). Antennas, Unit-Conversions, VSWR, RF power, DSP, EMC and much more RF related topics. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. Enter the Frequency to be converted. It is expressed in pulses per second or Hz. The R f value is a physical constant for organic molecules. This page convert and calculate wavelength. Yes - Enter the Velocity Factor or, select one. This is a required field. Since RF systems use decibels referenced from 1 mW, the corresponding voltage increase for every 1 mW power increase can be calculated with another form of Ohm's law: V = (PR) 0. If you want to calculate the Frequency from Wavelength - Click here to use the Wavelength to Frequency Calculator. µr = Magnetic permeability. This calculator can calculate the impedance and propagation delay of any microstrip by taking its respective height, width, thickness & dielectric constant. The VHF Television Band has 12 RF channels, and has been in use since 1947. The resonant frequency of a cavity can be calculated by using the following formula. Full Half-Wavelength Dipole: For optimal performance over average ground, the half-wave dipole should be installed a minimum of 1/2 wavelength above ground. Find the wavelength of a radio wave with a frequency of 101. | FREE DOWNLOAD 01 November 2023, 18:15 CEST >100. 99 MHz, respectively. The result will then be displayed in the answer box along with a dynamic conversion scale to show how wavelength varies for different frequencies, above and below the entered value. 65} {f} L = f 142. The Number that follows "WR" is the width of the waveguide opening in mils, divided by 10. m. The Wavelength from Frequency calculator computes the wavelength (λ) based on the RF frequency (ν) and the speed of light (c). At 0, 1/2 or 180 degrees, and back to 0 degrees of the wave, the current is at 0 or minimum. 2 Ratings. The formulae to calculate the dipole antenna and leg length are: L = 468 / f, l = L /2, where: L - Length of the dipole antenna in feet; l - Length of each arm of the dipole in feet; and. more ->Since light is an electromagnetic wave, the speed of the wave is 3 × 10 8 m / s and the equation f = v λ can be used. Please visit RFconnector. With this calculator you can calculate RF parameters in a radar range depending on: Frequency. If you know the frequency, or if you just calculated it, you can find the energy of the photon with Planck's formula: E = h × f. A Velocity Factor can be applied if you are working with coaxial cables. Radar Range calculator. Wavelength Calculator : Custom Search Home: Equivalents: Internet Glossary : Assists ham radio operators in converting a frequency to its wavelength in feet or inches. Hz to PPM Calculator. The R f (retardation factor) value is the ratio of the solute’s distance travelled to the solvent’s distance travelled. When this is coupled with the fact that RF wavelength is inversely proportional to the magnetic field strength, the wavelength inside the body (about 26 cm at 3 T) may be shorter than the dimensions of. The change in period between these two frequencies is 2 ps (that is, 1/99. For such an antenna, the near field is the region within a radius r ≪ λ, while the. Believe it or not, conductors can become thinner at higher frequencies with little impact on circuit loss, because the skin depth shrinks with frequency. In the V2400 version, at present under construction, we have upgraded this calculator with a better user interface, making use of up-down controls to change the main input parameters. These files are fairly large, some over 1 meg. Items (3), (4), and (5) above represent RF or power losses which can be measured. On our example FR-4 PCB operating at 6 GHz, a wavelength may be calculated from the well known formula as, Where F = MHz, λ (wavelength) = meters, Er = 4. Home › EIA WR 284 Calculator. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. How do you calculate radiated energy? The radiated energy can be calculated using the formula: Energy (J)=Power (W)×Time (s)Energy (J)=Power (W)×Time (s). The wavelength calculator solves for wavelength, velocity or frequency given 2 known variables. Operating Frequency. The length of RF waves impacts antenna design decisions. f f = frequency. Frequency: Frequency at which the stripline is analyzed or. The development of transmission line theory is presented in Section 3. One wavelength equals the speed of light divided by the frequency. ) or Hertz (Hz) These units may be inconvenient when dealing with radio frequencies. - Balanced Attenuator Calculator. Guide wavelength is defined as the distance between two equal phase planes along the waveguide. The ITU Radio Frequency to Wavelength conversion tool allows you to enter a frequency from 8. f 2 = Upper operational frequency in GHz. "1/4 wavelength". However, the frequency ν describes the temporal frequency of the radiation. Stripline Calculator. Waveguide Calculator (Rectangular) Pasternack's Waveguide Calculator provides the cutoff frequency, operating frequency range and closest waveguide size for a rectangular waveguide based on the custom inputted broad wall width. Pasternack's RF Free Space Path Loss (FSPL) Calculators is the ideal measurement tool that allows loss or attenuation of signal strength calculations between two antennas. When in doubt, use 1 for copper, . Dipole antenna calculatorFm 23-10 chptr 7 communications 5/8 wave 2kw vertical high gain fm broadcasting antennaAntenna length wavelength. Then, multiply the values of L and l by 0. 20KHz doppler frequency formula or equation for moving reflector. Dipole Antenna Calculator. 01MHz). This frequency. 13,573. 99792458 * 10 8 meters/second. kHz MHz GHz. Description. The regions depend on the maximum linear dimension of the antenna and the wavelength. Free Space Path Loss Calculator. By the time you have added a quarter-wavelength, you have gone 180 degrees about the center of the Smith chart. Enter the relative permitivity, width of the trace, the ground plane spacing, and the substrate thickness to calculate the characteristic impedance. With this calculator you can calculate and verify RF levels on a Radar Target Simulation range. 185, you wish to calculate and then select the. The gain of the pyramidal horn antenna gain can be calculated by the following formula. Pasternack's RF Calculators and Conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. The wavelength is the distance covered by one complete cycle of the electromagnetic wave, while the frequency is the number of electromagnetic waves passing a given point in one second. Use is pretty straight forward. Wavelength (λ): The calculator returns the wavelength in meters. Enter the gains of the transmitting and. The NIST and Michigan researchers mapped field strength as a function of position at resolutions as low as one-hundredth of an RF wavelength, far below normal. It include antenna gain calculator, Antenna G/T ratio calculator, coaxial cable Impedance calculator, Noise temperature to Noise Figure Converter, Radar Range Calculator, resonant frequency calculator, wavelength to frequency calculator, receiver C/N ratio,. With our handy calculator, you can choose from 50 Ohm, 75 Ohm, 93 Ohm and 95 Ohm coaxial cables. For example, if you wish to input "25000000", just type "25M" instead. It's easy! Just use our wavelength calculator in the following way: Determine the frequency of the wave. The frequency is equal to the speed of light in a vacuum divided by the wavelength. In fact, striplines often make components such as band-pass filter's more accurately, with more symmetric roll-off and no lower cutoff frequency. Using the calculator, we see that the skin depth. This calculator is used to convert Frequency to Wavelength. Wavelength Calculator (TEM) Calculate a wavelength in the presence of a dielectric. 847-592-6350; [email protected] Wavelength of RF waves : Distance covered by one complete cycle of the RF wave, as shown in Figure 1. 3. 1-866-PASTERNACK (1-866-727-8376) US and Canada only • +1-949-261-1920 International • Email sales@pasternack. Wavelength to Frequency. The Importance of Antenna Beamwidth in RF Testing. 5m which is 7 half wavelengths taken from the Multiple 1/2 Wavelengths table with a single 1/4 wavelength added as shown in the Coaxial Length Calculator. Take an antenna for a low frequency in the kHz range. Note: Assumes 50 Ohm system. Also here is a second formula for calculating a half wavelenght in inches. μr (relative permeability) Quarter Wave Transformer Impedance Calculator. Antenna Length (L) mil. **Note: All of our calculators allow SI prefix input. 4. Where, D = Antenna dimensions (Can be the length or diameter of the antenna) f = Signal Frequency. f. Noise Conversion Calculator. Waveguides are. A rectangular waveguide is commonly used for the transport of radio frequency signals. * If you are using two GPS antennas to compute heading then this does not apply. Adding one quarter-wavelength moves you 180 degrees to the right side of the chart, to an open circuit. 3 = 230. For electrically large antennas there. It assumes that the wave is traveling at the speed of light which is the case for most wireless signals. Applies to Transverse ElectroMagnetic propagation. 5 / frequency in MHz. C or Velocity of Light = Speed of Light (299,792,458 m/s) Frequency (Hz): The frequency in Hz. 28, Quarter Wavelength = 0. 40) Led Resistor Calculator. The Wavelength from Frequency calculator computes the wavelength (λ) based on the RF frequency (ν) and the speed of light (c). 1 meters. Calculating RF Wavelengths. Wye/Star to Delta Conversion Calculator. Disclaimer: This calculator has been tested and is believed to be accurate to 6 significant figures. 1: Impedance-matching using a quarter-wavelength transmission line. 2 \text { m/s} by default, the speed of sound, but feel free to enter a. Our RF and microwave calculators and converters will provide the figures you need for your radio frequency engineering needs. This can be useful for determining antenna ground plane requirements, antenna spacing requirements to prevent coupling in for multi-antenna systems, or other situations where the antenna’s wavelength is needed. One for feet and the other for meters. : 3. 85419 x 10. 455 kg/lb) = 2. This general RF calculator includes calculations of path loss, VSWR and wavelength as well as conversions between many common terms used in the wireless industry. In addition, because of the rain drop's shape and its relative size compared to the RF signal. This is an theoretical approach to the calculation and can be used to make rough. And click here to try out our skin-depth calculator. Watt To dBm Calculator. ppt ODonnell 06-13-02 (Equivalent) Antenna. Following table provides links to useful Wireless converters and calculators. To calculate the height above ground, you need to subtract the result from a line drawn directly between the tops of the two towers. Is the Doppler effect sound affected by wavelength? The doppler shift induces a wavelength shift at the wave's origin (the source frequency remains constant) Only the wavelength changes for the travelling observer (in the source), whereas both frequency and wavelength change for the stationary observer (experiencing the doppler shift). nl - Free - Mobile App for Android. All Conversion Calculators. 1. For a parabolic antenna, the gain is calculated by the formula: Ga = 10lg (k (πD / λ)2cos (Φ)) Where: Ga — gain; k — efficiency of antenna surface utilization (approximately 0. 3/4 and 1 1/4 and 1 3/4 and so on are also. Penetration depth is a measure of how deep light or any electromagnetic radiation can penetrate into a material. 43 cm: Power Rating (Megawatts) 1. In the text, you'll also find the frequency definition, two frequency formulas (period to frequency and wavelength to frequency), and a few. These include: Conversion: dBm To Watt Calculator | Frequency to Wavelength | Noise Figure to Noise Temperature Calculator | Noise Temperature to Noise Figure Converter | Watt To dBm Calculator | Wavelength to Frequency. Pasternack's Coaxial Cable Impedance Calculator allows you to enter the Outer Diameter Dielectric width, Inner onductor Diameter width and either the Dielectric Constant or Velocity of Propagation (VoP) values in order to. - Tee Attenuator Calculator. All you have to do is divide the speed of light by the frequency. Radar cross-section ), denoted σ, also called , is a measure of how detectable an object is by . 83*984/14. Formulas and Calculations. 9913 and LMR-400 are popular “low-loss” RG-8 types. Frequency wavelength in millimeters: Download various frequency allocation charts. Maximum Unambiguous Range Calculator. Operating above the cut-off frequency that results in interference in signal propagation. This is a required field. 65c/frequency = 0. Input voltages are RMS values. Bureau/Office: MediaSkin Depth Calculator. 19. A single wavelength at this range is on the order of miles long. Wavelength and Frequency is described by this equation: λ = v/f. The substrate parameters (ε r and h) and the frequency of interest are required. For example, 5 mW is equal to 7 dBm, and 100 KW is equal to 80 dBm. In the absence of obstacles and without atmospheric attenuation the total power passing through the surface of a sphere centered on a transmitter is equal to the power transmitted. A = Area of aperture in m 2. Ae = Effective antenna aperture in m 2. Radiated Magnetic Field from a Loop Antenna (Low Frequency, Close Proximity). 8dB. Speed of light = (frequency) * (wavelength), where frequency is in Hz, wavelength in meters, and speed of light = 2. where h is the Planck's constant: h = 6. Learn more about waves in our wavelength calculator or our frequency calculator. For electrically small antennas (where D < λ / 2) there are only two regions; near-field and far-field. 437 GHz (802. Signals can be reflected whenever there is a mismatch in characteristic impedance. Calculators: • Wavelength • Free space path loss • Attenuators • Link budget • Resonance • VSWR • Reflection coefficient • Return loss •. f if the frequency of the RF signals. The ITU Radio Frequency to Wavelength conversion tool allows you to enter a frequency from 8. Frequency. Design a transmission line segment that matches 300 Ω to 50 Ω at 10 GHz using a quarter-wave match. TEM wavelength is the distance between two adjacent peaks or troughs of adjacent cycles of the TEM wave. , electromagnetically "short" antennas), the far and near regional boundaries are measured in terms of a simple ratio of the distance r from the radiating source to the wavelength λ of the radiation. These are the initial values we feed to the software or the Yagi antenna calculator. Antennas, Unit-Conversions, VSWR, RF power, DSP, EMC and much more RF related topics. This calculator clears up that confusion to make the conversion between wavelength and frequency easy. This frequency to wavelength calculator is especially useful for the calculation of the element length of the dipole antennas. Then, apply the formula: λ = v/f. According to WatElectronics "Wireless Radio frequency is any of the electromagnetic wave frequencies around 3 kHz-300 GHz". 65c/frequency = 0. λ = Wavelength of EM wave; c 0 = Speed of. 7, 494, and 983. $\begingroup$ Its got nothing to do with whether the cage is grounded. 38 284. The coax cable is a means for transferring your RF signal to the radiating portion of the radio system. So, we calculate lambda by having the speed ratio to the frequency(v/f). 55). where: λ – Wavelength; v – Propagation speed of the wave; and. 25*0. Ratings and Reviews 5. A radiation calculator is a tool or formula used to calculate various properties of radiation, such as frequency, wavelength, energy, or power. The input unit of wavelength is meters (this can be modified), the output frequency is calculated in MHz. The corresponding wavelength is called the EMI shield wavelength. v. GHz.