'+ data.data.username +' '; dom + ='
Select Language
In an antenna system, whether the antenna is well-connected to the device is usually measured by a parameter called standing wave ratio. When the standing wave ratio is 1, it means that the antenna system is well-matched without reflection. This means that the worse the matching condition, the greater the reflected wave in the system. So how do you measure the VSWR of the antenna? Here I will introduce a simpler method to you.
To measure the standing wave ratio, a frequency sweeper is needed. The connection method is shown in Figure 2-1. First, short-circuit the terminal of the feeder (near the antenna system). At this time, the signal output by the frequency sweeper forms a total reflection at the terminal of the feeder. Observe the total reflection waveform as shown in Figure 2-2. The maximum amplitude of the curve is a, and then connect the antenna to the terminal of the feeder. At this time, the maximum amplitude observed on the frequency scanner within the operating frequency range is b. As shown in Figure 2-3, First find the reflection coefficient P = b / a, then use the formula S = 1 + P / 1-P to find the standing wave ratio, where S represents the standing wave ratio.
Follow WeChat
Download Audiophile APP
Follow the audiophile class
related suggestion
EVM is the ideal measurement component I (in-phase) and Q (quadrature phase) of the transmitted signal (called the reference signal "R") and the actual received measurement ...
The measurement method of the grounding resistance tester is introduced in detail.At present, there are hundreds of thousands of grounding resistance testers on the market, some of which are imported and domestic, summarized ...
Methods of Measurement of Spurio ...
In many cases, in order to reduce the space occupied by the antenna, I ...
Abstract: This paper introduces a point coordinate measurement method using video. The scheme is cleverly designed, the measurement method is stable and reliable, and the accuracy is high. This method adopts ...
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.