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利用高方向性的波导耦合器可以比较精确地进行X波段同轴元件的扫频测试。匹配良好的同轴-波导变换的电桥是H-P公司制造的,它能够抵消同轴-波导转接器的不可避免的误差。制造厂声称其X 8440 A反射系数电桥测试反射系数ρ的不确定性为±(0.03+0.16ρ~2),这比大多数的开槽测量线测试要精确。电桥设计和作用如图1所示。电桥用平衡臂转接器的反射来平衡测试臂的剩余反射,两者大小相等相位相反。这样,接在测试臂的被
The use of highly directional waveguide coupler can be more accurate X-band coaxial components of the sweep test. A well-matched coaxial-to-waveguide conversion bridge is manufactured by H-P, which counteracts the unavoidable error of coaxial-waveguide adapters. The manufacturer claims that the uncertainty of the X 8440 A reflection coefficient bridge test reflection coefficient ρ is ± (0.03 + 0.16 ρ ~ 2), which is more accurate than most slotted measurement line tests. Bridge design and role shown in Figure 1. The bridge balances the remaining reflections of the test arm with the reflections of the balance arm adapter, both of equal size and opposite in phase. In this way, connected to the test arm was