WinRFCalc Free Windows RF Calculator. The most widely used formula to calculate the approximate overall length of wire required for a dipole is: 468 / frequency (MHz) = length of wire in feet. 2 x!5NEW Version V2323, released on 31 May 2023, FREE DOWNLOAD, WinRFCalc is the best Windows RF calculator toolbox for EMC, RF and Radio engineers. Hence, usually, the designers prefer a non-reflective type attenuator. Most RF Coaxial Cables have an impedance of 50 ohms or 75 ohms. In other words, The Half Power Beamwidth (HPBW) is the angular separation in which the magnitude of the. f if the frequency of the RF signals. dBm stands for decibel-milliwatts; is a dimensionless unit used to define/measure signal strength (power level), with reference to 1 milliwatt. 5. VSWR. The HSM12001B from Holzworth Instrumentation is an RF synthesizer module that operates from 10 MHz to 12. In no event will Qorvo be liable to any user of these tools for any loss or damages, including without limitation, indirect or consequential damages arising out of or associated with the use of these tools. VSWR is defined as the maximum voltage of the standing wave (E max) to the minimum voltage of the standing wave (E min ). 99. After a click on 'Calculate' the components required for the filter response are calculated. 3 dB. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. Patch antenna online calculator. Advertisement. Click on the desired link below to use each calculator. Round Earth Calculator Hair Diffraction Calculator Immersed Weight Calculator Projectile Motion Experiment Calculator Smartphone Projector Calculator Sun Angle Calculator Sunrise Sunset Calculator Toilet Paper Race Calculator - Mass Moment of Inertia. Stripline Calculator. e. Enter the desired frequency and select the wavelength. The Smith Chart graphically maps S11=reflection coefficient= (ZL-Z0)/ (ZL+Z0) to Load Impedance (ZL), normalized to Z0 (source impedance = center of chart). Nice Voltage Standing Wave Ratio (VSWR) calculator is given on this page, converting between reflection coefficient, gamma (in both percent and decibels), and mismatch loss. Calculates the resistor values, attenuation, 'impedance', reflection coefficient, VSWR and return loss of a Pi attenuator. VSWR Return Loss Calculator. The calculator can also be used to find the value of VSWR using any of the other values. S-Parameters are used to describe the relationship between different ports, when it becomes especially important to describe a network in terms of amplitude and phase versus frequencies, rather than voltages and. vswr Excel calculator. The chart is used during RF simulation by RF engineers and is displayed by vector network. 0. Forward Power (W) Reverse Power (W) VSWR. VSWR is defined as the ratio of the maximum to minimum voltage on a loss-less transmission line (expressed as 3. 5 GHz. Note that in general S-parameters are a function of frequency (i. This tool is javascript so it works on Windows, Mac, IOS, Android. This microwave CW source is based on a non-PLL platform. Let’s use some of these numbers in the calculator. This ratio represented in dB is called as Return Loss. 12:1, which is a. VSWR is defined as the ratio of the maximum voltage to the minimum voltage in standing wave pattern along the length of a transmission line structure. 4. With the initial values in place, you need only click on Calculate. Wavelength Calculator. - Reflection Attenuator Calculator. See full list on allaboutcircuits. This online reflection coefficient calculator calculates the reflection coefficient (Γ) by entering the value of the characteristic impedance Z o (in ohms. VSWR CALCULATOR – P-N Designs, Inc. to a calculator or computer program that will handle it. But, for a practical system, there will be a small impedance. 05:1 it calculates a VSWR of 1. The website provides the latest Industry news, information on new products, upcoming events, technical articles, white papers, and a parametric component search tool. Enter VSWR value other than 1 or 0. Return Loss to VSWR. VSWR (pronounced "viswar"), or the Voltage Standing Wave Ratio, is the ratio of the maximum standing wave amplitude at one node to the minimum amplitude at another node in a system. PIM Calculator; Third order IP; Inductors. Mar 23, 2023. VSWR Calculations. RF Cascade Workbook for Excel. This free online interactive Smith chart tool is a calculator which can help you design matching networks and obtain maximum power transfer between your source and load. Suitable for VHF (~1. However, VSWR gives a quick way of estimated how much power is reflected by an antenna. Here is a useful "cheat sheet" converting VSWR to the percentage of reflected power. 43 20. 99 $ = 1-Gamma^2$. Q. A set of 4 calculators with Chebychev response filters for analog low-pass, high-pass, band-stop and band-pass filters. In one typical RF application, VSWR is used to measure the amount of reflection due to impedance mismatch. This application note supplies a free of charge software tool that can e. 01:1 to 3. 7 dB. 50:1, with a corresponding return loss of 3. WCN3998. For a VSWR of 2, the mismatch loss is calculated to be 0. The effect of a short discontinuity in transmission line characteristic impedance. High return loss means low reflected power, so high return loss is good for a system. When an ideal match is not encountered by the incident (forward) wave, part of it is coupled to the load and part is reflected back to the source. Also, the VSWR is a result of things getting reflected back:A calculator designed to compute the VSWR, reflection coefficient, return loss and matching loss in a transmission line T-Pad Attenuator Calculator This calculator helps you determine the values of the resistors R1 and R2 to be used for a T-pad attenuator. 0:1, 2. Frequency. The results of this calculator may be rounded, the user takes responsibility for use of results. Fortunately, there’s a very easy way to analyze complex loads using graphical methods and it’s called the Smith Chart. Return loss vs. Unequal-split Power Divider Calculator. As we know that the definition of the return loss of a system is the ratio of incident power to reflected power. MS2090A. everything RF. Particularly, reflected power and mismatch loss help describe the need for the antenna (with its matching network) to provide a suitable return loss to the active electronics. The IEEE definition for effective radiated power (ERP), which is. All our transmitters above 50W feature a simple Forward and Reflected power meter on the front panel. As an added bonus, the results are modifiable and can calculate the other values. Because of this, the effects of mismatch can be minimized by selecting an. Printable (pdf version) - Updated only with firmware releases (may not be latest). This scientific calculator performs 99% of routine and not-so-routine lab calculations, and provides instant and accurate answers for a variety of conversions, scientific functions, statistical operations, all arithmetic calculations, and other lab constants. These reflections are very undesirable when we aim to transfer power from one. Welcome to our Microwaves101's Download Area! If you have something useful that we can add, send it along to us. Γ = Reflection coefficient. 25 is average. Here are the things that you can plot in this version. ,100 % power transferred from a source to a load via a transmission line/cable). You can plot the VSWR circles. R • s V ( d )= V + e jβd+Γ L e −j 2 βd) d I ( d )= V + e jβd(1 − Γ L e −j 2 βd) Z o nl. 0:1, 2. Here’s a really simple way of double checking how to much to trim your antenna elements. 50:1, the resulting maximum VSWR will be 4. ,100 % power transferred from a source to a load via a transmission line/cable). Visit RF Link Budget>>. Measure the magnitude of the wave voltages at the coupled and isolated ports. This calculator can be used to indicate the degree of mismatch between a transmission line and its load. You only need to type in the numbers in the Cyan boxes. If there is something in the microwave universe that you need a different calculator for, drop us a note and we'll see what we. It requires a DC supply of +15 V and consumes less. As it can be seen from the above equation, VSWR is always a real and positive number with a minimum value of 1. It provides a measure of how efficiently RF power is transmitted from a power source, through a transmission line, to a load such as an antenna. Calculates the resistor values, attenuation, minimum attenuation, 'impedance', reflection coefficient, VSWR and return loss of a matching Pi attenuator. VSWR to Insertion Loss Calculator Enter VSWR: Calculate FAQs How do you calculate insertion loss? Insertion loss can be calculated by measuring the power or. This calculator is used to calculate the value of resistor R1 & R2 of pi type symmetrical attenuator (shown below) for the required value of attenuation (in dB) and for matching impedance (Zo = Zs =ZL Ω). R. Click here to try our VSWR to Return Loss. Gain. A table of convenient values are presented at the bottom. Tags Communications • Communications And Networking Systems Or Equipment • Design Tools (eda) •. Match different impedances by attenuation. Suppose the wave is not matched with load and signal there is some unwanted signals are interrupted or signal loss is occurred. 8. VSWR is a measure of the efficiency of the transmission of radio frequency power from its source through a transmission line and into a load, such as from a power amplifier, through a transmission line, and to an antenna. Formally, S11 is the negative of return loss and. This VSWR calculator will calculate return loss, mismatch loss, loss in percentage and the reflection coefficient. The benefit of expressing signal strength (power) in dBm is: we can express both very large and very small power values (W) in a short range of number. If we measure the power of a reflected signal from an antenna near a radio transmitter, the measurement of the reflected signal’s amplitude at this juncture compared to the initially transmitted. Enter the value for VSWR in the below calculator to find out the values for Reflection Co-efficient, Reflected Power in % and Return loss in dB and the mismatch loss in dB. The modules deliver a Tx power of up to 18 dBm and have Rx sensitivity of -94 dBm. VSWR adalah VSWR juga dapat di artikan sebagai perbandingan antara gelombang maksimum dengan gelombang minimum. 0. The relationship between composite return loss and individual return loss in the constructive condition of identical mismatches is that the composite VSWR is the the square of the individual VSWRs. Reactance Calculator. The Field Master Pro MS2090A from Anritsu is a RF handheld spectrum analyzer that operates up to 54 GHz and has a real-time spectrum analysis bandwidth of up to 100 MHz. The VSWR Calculator uses the Root-Sum-of-Squares (RSS) Analysis to calculate the most probable VSWR values in a single waveguide assembly with multiple bends, twists, or a. Power to Voltage. 97dB. |. Since reactance represents "stored energy", it is not very useful. VSWR = ∞ is the worst condition. This calculator can be used to indicate the degree of mismatch between a transmission line and its load. VSWR Calculator: How to Calculate VSWR? Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line. Voltage Measured Along a Transmission Line. 57. 01 November 2023, 18:15 CEST. A high VSWR (voltage standing wave ratio) is a problem in reflective type attenuators when compared to the absorptive (non-reflective) type attenuators. Sterling-LWB5+. VSWR VSWR transmitter fold back 1. These multiple solutions are possible because each contributor is a vector having both. 11) = 3. In summary, the VSWR Calculator is an essential tool for RF professionals, enabling them to assess the quality of signal transmission and diagnose issues. Stripline Calculator. Enter all the Resistive values in ohms, C in pF and L in nH. This noise source has low power with a high crest factor for signal impairment applications. 1-800-761-3041 Contact Account Cart Search Waveform. PXI Digitizer by Spectrum Instrumentation ( 68 more products) Download Datasheet Request Quote. Sometimes he's all wound up about a microwave topic; other times it's random stuff like New Orleans Jazz, SUVs, or Gilligan's Island. A VSWR of 6 or more is pretty high and will generally need to be improved. 5dB loss per 100 feet at 146 MHz). S-parameters can be easily imported, visualized, and analyzed in MATLAB ® using RF Toolbox ™. S11 Linear to dB. To graphically find the input reflection coefficient or input impedance, we first identify the scale ”WAVELENGTHS TOWARD GENERATOR” (WTG) on the Smith Chart’s outer perimeter; see green oval in Figure fig:SCImpRefCoeff. Schematic representation of a PCB patch antenna: The calculator is based on simplified formulas for calculating microstrip. Tags: Vector Signal Generator. Easy to use tool, Kintronic Labs, online VSWR Calculator. Skin Depth CalculatorVSWR of 1. 091) (0. There is a resistive axis that is down the middle of the chart, This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors. The TEM wavelength is denoted by the lambda (λ), and the unit of the TEM wavelength is usually represented in nm/µm/mm. A perfect match would be 1:1, meaning that the peak amplitude of the signal is always the same (i. Click to use the Normalized VSWR calculator,. VSWR :1 : Input Power [dBm] [W] Reflection Coefficient : Mismatch Loss [dB] Return Loss [dB] Reflected Power [dBm] [W] Output Power [dBm] [W] Share your thoughts. We can calculate it as, based on load impedance Z L and conduction line impedance Z 0: Γ = Z L − Z 0 Z L + Z 0. Do all your RF calculations using this application. EIRP (mW) EIRP (dBm)Instructions. Therefore the VSWR of port 1 must equal that of port 4 and also port 3. Although calculators and computers can now easily give answers to the problems the Smith chart was designed to solve, this great chart still remains a valuable tool. Adjacent Channel Leakage Ratio (ACLR) or Adjacent Channel Power Ratio (ACPR) is defined the ratio of the transmitted power on the assigned channel to the power received in the adjacent radio channel after a receive filter. The following table provides conversions for wavelength (from frequency), VSWR (from forward and reflected power) and various other useful conversions. VSWR. A SWR can be also defined as the ratio of the maximum amplitude to. SPD701. $ = \Gamma^2 = 10^{-RL/10}$ Power transmitted ratio for system 1 is 0. VSWR (voltage standing wave ratio, sometimes pronounced "viswar"), is the ratio of the maximum standing wave amplitude at one node to the minimum. It was developed to increase the speed and capacity of mobile communication networks using DSP (digital signal processing) techniques and modulations. dBm/m2. Note that the outer boundary of the Smith Chart (where =1) corresponds to a VSWR of infinity. In the ideal case where the source, transmission line and load all have an impedance of 50 Ω the VSWR will be 1:1 (perfectly matched). 0 indicates about 75% of the power is delivered to the antenna (1. VSWR is determined from the voltage measured along a transmission line leading to an antenna. com . Using an SWR power forward calculator, and a EIRP power calculator I calculated the following:. 5 GHz. Just in case you don’t care for mathematical equations, here’s a little “cheat sheet” table to help. 2 times the minimum voltage along that line, if the line is at least one half wavelength long. Enter the value for VSWR in the below calculator to find out the values for Reflection Co-efficient, Reflected Power in % and Return loss in dB and the mismatch loss in dB. Low-pass lumped element filters. A network analyzer can be used to make S parameter measurements. Welcome to our VSWR (Voltage Standing Wave Ratio) calculator, a tool designed to simplify your RF projects by accurately determining the VSWR based on your system’s Source and Load impedances. That is, a VSWR = 1 would be the center of the Smith Chart, and VSWR=3 would be a circle centered around the center of the Smith Chart, with magnitude =0. The table was created with a handy Windows-based program called VSWR Calculator, detailed by author Steve Hageman of Agilent Technologies (Santa Rosa, CA) in his. The VSWR/return loss calculator from Pasternack will find VSWR, return Loss, mismatch loss, and the reflection coefficient given any one of. The VSWR (Voltage Standing Wave Ratio) Calculator is a crucial tool in the field of radio frequency (RF) engineering and telecommunications. As an example of common VSWR values, a VSWR of 3. or any device with a web browser. With our handy calculator, you can choose from 50 Ohm, 75 Ohm, 93 Ohm and 95 Ohm coaxial cables. The M5i. It is a Smith Chart based linear circuit simulation program that can be used via a website. Companies like JFW Industries can make a mismatch load (or mismatch termination) that can be used to test amplifiers and help characterize their performance under conditions that might occur in the. Suitable for higher power (~1800 watts) at HF. Even so, the math gets tedious in a hurry. At 1000 MHz, the S11 (dB) = -RL (dB) = -15 dB. RF Trap With Attenuators Computes attenuation, return loss, reflection coefficient and VSWR . Return Loss (dB) Mismatch Loss (dB). On the other hand, VSWR and the reflection coefficient are connected by the equation: VSWR = (1+|Γ. The PDR05848 from Knowles is a flip-chip resistive divider that operates from DC to 40 GHz. dBm definition. Standing waves are the signals/power that do not radiate in to the air, by the antenna (load), but reflect back. 9913 and LMR-400 are popular “low-loss” RG-8 types. Active return loss and mismatch calculator with results for absolute impedance, return loss, VSWR, reflection coefficient and mismatch loss. Signal Generator by Sanko Technologies ( 2 more products) Download Datasheet Request Quote. To help the engineers conducting VSWR sweeps, Lou developed the PIM and VSWR. Enter Forward Power: watts. 83% is. At UHF in general, the vswr of the X50NA (as viewed on 2 different analyzers) seems to waver up and down every few MHz between ~1. Radio Operators can use to determine SWR. Forward Power (dBm) Hence, the return loss is always lower than the ideal system (i. vary with frequency). Two years ago, one of our most respected RF experts, Lou Meyer, wrote a blog post describing the technicalities of return loss and voltage standing wave ratio (VSWR) and how the multiple components at a cell site tower make the calculations more complex. 99 $ = 1-\Gamma^2$ This RF/microwave system Cascade Analysis Calculator is an easy to use design analysis tool. 5G NR Band n71 has a frequency range from 663 - 698 MHz (Uplink) / 617 - 652 MHz. Upon arriving back at the source, part of the reflected wave is coupled back. Reflected power ratio for system 1 is 0. For Dipoles: Cut / Add the result to each leg. Requires Windows 7 (64 Bit) or higher. Calculate Voltage and Current at your Antenna's Feed Point! Power (in watts): Impedance (in ohms):VSWR Calculator: วิธีคำนวณ VSWR? อิมพีแดนซ์ไม่ตรงกันส่งผลให้เกิดคลื่นนิ่งตามสายส่ง และ SWR ถูกกำหนดให้เป็นอัตราส่วนของแอมพลิจูดของคลื่น. Frequency in Ghz. It also gives an estimate of the mismatched loss if the mismatch is specified. For example, an oscillator is intended to run at 10MHz. T Attenuator Calculator. Return loss is when the transmitted signal is not completely. At 1000 MHz, the S11 (dB) = -RL (dB) = -15 dB. *Note: This assumes network and radiator efficiency but should prove to be a good reference calculator nonetheless, especially in the far field. This value is usually calculated by discounting any obsticles or reflections that might occour. 0:1). The concept behind the Smith Chart is simple. Download this article of VSWR Explained. And S12 is the power from radio 2 that is delivered through antenna 1 to radio 1. 43. This can be built into a FLEXI-BOX and a transmission line (50 Ohm track) PCB is available which easily adapts for this circuit with one simple trimming. The following formula is used to calculate the Return Loss (RL) from Voltage Standing Wave Ratio (VSWR). Learn the definitions and formulas of these RF terms and view the VSWR table. Voltage Standing Wave Ratio (VSWR), a unitless ratio ranging from 1 to infinity, expresses the amount of reflected energy at the input or output of the device. Voltage standing wave ratio (VSWR) (pronounced "vizwar" [1] [2]) is the ratio of maximum to minimum voltage on a transmission line . 2 Modules. Assuming the systems have no internal loss. If you provide an email address I can share a system. VSWR (Voltage Standing Wave Ratio) and Return Loss both measure the same parameter i. In this highly technical and exacting field, having precise tools like a VSWR/return loss calculator at one's disposal is a necessity. The term "impedance" generally refers to the combined total of resistance and reactance. Voltage standing wave ratio (VSWR) (pronounced "vizwar" [1] [2]) is the ratio of maximum to minimum voltage on a transmission line . The S-parameter matrix describes networks with an arbitrary number of ports. 9, half the power is reflected back. Note: impedance is a complex quantity, it has real and imaginary parts or magnitude and phase; instruments are almost always calibrated for Zo being some nominal real value, is Xo=0 (eg when people speak of a 50Ω instrument, that means 50+j0Ω even if they don't. Enter Reflected Power: watts. W. Generic noise bridge calculator. Spreadsheet and text downloads. Everyday physics and experiments calculators 👩🔬. The VSWR value range from 1. A microstrip width calculator can calculate the width of a microstrip. Where: Gain (dB) = pyramidal horn antenna gain in dB (i. SINAD to ENOB Calculator. Interactive Tools & Calculators. The RM500Q-GL from Quectel is a Sub-6 GHz Cellular 5G Module that is optimized for global (except USA) IoT and eMBB applications. 24 dB. requiring a termination VSWR of 1. 11b/g/n) and Bluetooth v5. Return Loss. Measuring VSWR and Gain in Wireless Systems. The S-2-TCPUSEW-H-NI6 from CommScope is a Multiband 2-way Power Splitter that operates from 340 to 3800 MHz. 3 to 2. This free online interactive Smith chart tool is a calculator which can help you design matching networks and obtain maximum power transfer between your source and load. Does twisting a two wire open line reduce radiation. Fortunately, there’s a very easy way to analyze complex loads using graphical methods and it’s called the Smith Chart. Insertion loss can be calculated by measuring the power or signal level before and after a component, device, or system and then finding the difference in dB. A ratio of 2:1 indicates that reflections have resulted in a standing wave with a maximum amplitude that is twice as large as its minimum amplitude. They support Bluetooth Low Energy features like Basic. Pincident watts. 155 dB. PIM Calculator; Third order IP; Inductors. That is, a VSWR = 1 would be the center of the Smith Chart, and VSWR=3 would be a circle centered around the center of the Smith Chart, with magnitude =0. Online SWR Calculator. 254 mm. The VSWR Calc program is a Microsoft Visual Basic 32-bit application that runs on Windows 95, 98, and NT 4. Forward Power (dBm)VSWR (Voltage Standing Wave Ratio) is a measurement of how well matched a radio transmitter and transmission line is to a load such as an antenna. 5 ". If the match is not perfect, the peaks and valleys of the returned signal will not align perfectly with the transmitted signal and the greater this number is, the worse the match is. This general RF calculator includes calculations of path loss, VSWR and wavelength as well as. +-Wire 2 Wire 1 +-0 F = V g Z g Z L I ( d) V ( d) l Transmission line Load Z o Generator d d x | V ( d) | d n |V (d)| n |V (d)| x. 1 Return Loss. 1 Voltage Standing Wave Ratio (VSWR) Voltage Standing Wave Ratio (VSWR) is the ratio of the peak amplitude of a standing wave to the minimum amplitude of the standing wave. With the initial values in place, you need only click on Calculate. VSWR is most often described as a function of the reflection coefficient at the input of a signal chain element. L-3 Narda-ATM offers several calculators to assist in determining signal loss (dB) for cable assemblies, VSWR calculations, waveguide gasket types and more. An 805C cost $525 in 1966. —and calculates both the typical system return loss along with the worst case return loss. VSWR measures the divergence between a transmission line and its load, revealing the non-uniform nature of an electromagnetic field. 75 GHz Ku Band, Gain to Noise Temperature > 21. 4 GHz Antenna. Graphics downloads. S 11 =S 22 =S 33 =S 44. Short detour: There's a so-called reflection coefficient Γ that says "OK, for this mismatch, so and so much of the power is reflected back where it came from". Click on Calculate and the optimum length. 405 inch. VSWR Mismatch Errors: Both amplitude and phase errors are introduced when mismatched impedances are present at an electrical interface. Understanding the role and implications of impedance in RF transmission lines and antennas is vital to successful system performance. IRA Calculator. The first reflection back from each system will be the largest and subsequent reflections will be heavily attenuated, so we. VSWR Conversion Table. The results of this calculator may be rounded, the user takes responsibility for use of results. reflection coefficient Calculator. This formula is used to calculate the VSWR from the given return loss. See Figure A. , convert to noise factor F1, F2, &F3). The equivalent VSWR is 1. 891: 6. It varies from 1 to (plus) infinity. Voltage standing wave ratio (VSWR) is a way to measure transmission line imperfections. Signal’s power level lower than 1 mW has negative dBm values, and the signals stronger than 1 mW have positive dBm values. Example 2. These fast, accurate and cost-effective equipment are used by technicians and site engineers during cell site installation. m. 9, for system 2 is 0. When the load or antenna impedance, Z (whether real or complex) changes we get different values of VSWR that fall in this range. FieldFox Online Supplemental Help - FieldFox conceptual and reference information. The VSWR Calculator is used extensively in RF engineering, telecommunications, and antenna design to optimize system performance, reduce signal loss, and prevent damage to RF equipment. Welcome to our VSWR (Voltage Standing Wave Ratio) calculator, a tool designed to simplify your RF projects by accurately determining the VSWR based on your system’s Source and Load impedances. Power: VSWR=1. This article offers an introduction to the Smith chart and how it’s used to make transmission-line calculations and fundamental impedance-matching circuits. VSWR and impedance, Part 4: Measurements. Calculator. The PRS1520 from Peraso is a Beamforming IC that operates in the mmWave range from 24-29. vswr Excel calculator. Next, determine the forward power. Completely flat VSWR when measured at the station patch panel could for example indicate that the system may have hidden losses, be warned! Consider that a VSWR of 1. vswrant = vswr (object,frequency,z0) calculates and returns the VSWR of an antenna or array element, over specified frequency range, and a reference impedance of z0 ohms. 75 to 14. 2%) = ±3. 780-444-6767VSWR - Return Loss - Γ Conversions These are the standard set of equations for converting between VSWR, return loss, and reflection coefficient (Γ). This VSWR / Return Loss calculator allows you to compute corresponding VSWR, Return Loss, Reflection coefficient and Mismatch Loss values for the entered input value and input type. Then right-click on the file, click Properties, then click Unblock.