Voltage Standing Wave Ratio (VSWR) is a measurement of the impedance match of any RF component, subassembly, instrument in reference to a standard 50-Ohm resistive impedance. It is generally expressed ...

Impedance mismatches in a radio-frequency (RF) electrical transmission line cause power loss and reflected energy. Voltage standing wave ratio (VSWR) is a way to measure transmission line ...

If you have ever operated any sort of transmitting equipment, you’ve probably heard about matching an antenna to the transmitter and using the right co-ax cable. Having everything match — for example, ...

In electrical systems, impedance mismatches cause some of the transmitted energy to be reflected back to its source. The frequency of the signal determines the amount of energy that is reflected.

Here’s a situation that creates fear and trembling: The engineer receives a call from the radio station: “The transmitter is off the air and there is a VSWR fault.” If the station is fortunate, the ...

The term standing wave ratio, or SWR — sometimes called voltage standing wave ratio, or VSWR — frequently is a subject of discussions/arguments among communication technicians, hams and others ...

This is the fourth in a series of articles about FM transmission systems. The bandwidth of a commercial FM broadcast signal, depending on whether or not subcarriers are used, is about 260 kHz. This ...

Once again the ubiquitous USB TV tuner dongle has proved itself more than capable of doing far more than just receiving broadcast TV. Over on the RTL-SDR blog, there’s a tutorial covering the ...

The input VSWR of the amplifier must be kept within a specified range (for example, 2:1 or lower) over the operating frequency range. Although these two problems are sometimes discussed separately, ...

使用 ADS软件的自定义函数，在数据显示窗口中的 Smith圆图中，以指定阻抗点为参考，绘制等 VSWR圆。如下图所示，使用vswr_circle函数，以Z_val1（归一化）阻抗为中心，绘制等 VSWR圆： numCircles ...