【小编】关于驻波比与回波损耗的换算分析

来支雪茄

驻波比（VSWR）是指微波传输过程中，最大电压与最小电压之比，是一个比值。

回波损耗（Return Loss）是指反射功率，单位是dB，RL和驻波比可以换算，RL= -20 lg [( VSWR-1 ) / ( VSWR + 1 )]

驻波比与回波损耗的换算关系
驻波比（VSWR）: Voltage Standing Wave Ratio
回波损耗（RL） :Return Loss
换算公式：RL=20*log10[(VSWR+1)/(VSWR-1)]

回波损耗	VSWR	反射系数	匹配率%	失配率%
1	17.391	0.891	20.567	79.433
2	8.724	0.794	36.904	63.096
3	5.848	0.708	49.881	50.119
4	4.419	0.631	60.189	39.811
5	3.570	0.562	68.377	31.623
6	3.010	0.501	74.881	25.119
7	2.615	0.447	80.047	19.953
8	2.323	0.398	84.151	15.849
9	2.100	0.355	87.411	12.589
10	1.925	0.316	90.000	10.000
11	1.785	0.282	92.057	7.943
12	1.671	0.251	93.690	6.310
13	1.577	0.224	94.988	5.012
14	1.499	0.200	96.019	3.981
15	1.433	0.178	96.838	3.162
16	1.377	0.158	97.488	2.512
17	1.329	0.141	98.005	1.995
18	1.288	0.126	98.415	1.585
19	1.253	0.112	98.741	1.259
20	1.222	0.100	99.000	1.000
21	1.196	0.089	99.206	0.794
22	1.173	0.079	99.369	0.631
23	1.152	0.071	99.499	0.501
24	1.135	0.063	99.602	0.398
25	1.119	0.056	99.684	0.316
26	1.106	0.050	99.749	0.251
27	1.094	0.045	99.800	0.200
28	1.083	0.040	99.842	0.158
29	1.074	0.035	99.874	0.126
30	1.065	0.032	99.900	0.100
31	1.058	0.028	99.921	0.079
32	1.052	0.025	99.937	0.063
33	1.046	0.022	99.950	0.050
34	1.041	0.020	99.960	0.040
35	1.036	0.018	99.968	0.032
36	1.032	0.016	99.975	0.025
37	1.029	0.014	99.980	0.020
38	1.025	0.013	99.984	0.016
39	1.023	0.011	99.987	0.013
40	1.020	0.010	99.990	0.010
41	1.018	0.009	99.992	0.008
42	1.016	0.008	99.994	0.006
43	1.014	0.007	99.995	0.005
44	1.013	0.006	99.996	0.004
45	1.011	0.006	99.997	0.003
46	1.010	0.005	99.997	0.003
47	1.009	0.004	99.998	0.002
48	1.008	0.004	99.998	0.002
49	1.007	0.004	99.999	0.001
50	1.006	0.003	99.999	0.001