问题已开启 (普通问题) VSWR与return loss 之间关系计算式 提问者: proceed2014 提问时间: 2014-08-07 我要回答: 请先登录 或注册 再回答问题 更多VSWR OSS LOS 计算 swr 相关问题 • 手机RF RX FFT 测试值偏大怎么样通过PathlOSS补偿来改变测试值 2015-11-13 • pathlOSS这个参数和什么有关啊?? 201...
驻波比小于3,就是要求你的反射系数要小于1/2，也就是说你的功率损耗不能超过入射功率的25%，也就是说你的return loss要大于6db，return loss越大，你的信号反射的越少的，当然效率越高啦！好像工业上要求一般驻波比小于2的。
RL = 20log((VSWR+1) / (VSWR-1)) VSWR = (1+(10^RL/20)) / ((10^RL/20)-1) * RL = Return Loss Return Loss : This is the dB value of absolute reflection coefficient. It is rather curious concept of transmission engineering. This loss value becomes 0 for 100% reflection and bec...
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1.回波损耗RL(Return Loss) 它是反射系数绝对值的倒数,以分贝值表示。回波损耗的值在0dB到无穷大之间,回波损耗越小表示匹配越差,回波损耗越大表示匹配越好。0表示全反射,无穷大表示完全匹配。在移动通信系统中,一般要求回波损耗大于14dB。 RL=10lg(入射功率/反射功率) ...
The VSWR/return loss calculator from Pasternack will find VSWR, return Loss, mismatch loss, and the reflection coefficient given any one of the listed input types. VSWR (voltage standing wave ratio, sometimes pronounced "viswar"), is the ratio of the max
Return Loss (dB)Mismatch Loss (dB) Loss in %Reflection Coefficient VSWR Reduction using a matched attenuator (assuming a perfect 1:1 Attenuator) Attenuator (dB)Improved VSWR Definitions: VSWR (Voltage Standing Wave Ratio)is the measure of how efficiently RF power is transmitted and is expressed ...
S11：端口2匹配时，端口1的反射系数；S22：端口1匹配时，端口2的反射系数；S12：端口1匹配时，端口2到端口1的反向传输系数；S21：端口2匹配时，端口1到端口2的正向传输系数；
Return Loss in dB (output): Return loss calculation EXAMPLE : VSWR = 1.1 Return loss in dB = 26.44 Conclusion: In summary, RL and VSWR formulas and calculators are valuable tools that enhance the efficiency, accuracy and consistency of RF engineering tasks such as measurement, analysis, trouble...
百度试题 结果1 题目对天馈线进行测试主要是通过测量其驻波比(VSWR)或回损(Return Loss)的值和( ) A. 具体情况 B. 高度 C. 温度 D. 隔离度(Isolation) 相关知识点: 试题来源: 解析 D 反馈 收藏