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Faults in microwave transmission lines can be more efficiently detected by using an absorber in conjunction with a reflection signal analyzer.
English (United States)
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Microstrip Voltage Standing Wave Ratio Isolator
Faults in microwave transmission lines can be more efficiently detected by
using an absorber in conjunction with a reflection signal analyzer.
Referring to the figure of a simplified microstrip, a reflection analyzer 1 is
attached to the input on the signal transmission line 2 for measurement of the
voltage standing wave ratio (VSWR). If a fault is noted due to a large VSWR
value, a piece of absorber 3, such as ferrite-loaded silicon cut to provide
sufficient absorption, is laid on the microstrip line, and the VSWR is again
checked. By progressively moving the absorber to different points 3A-3E along
the transmission line for each test, the location will be reached where the
absorber has no effect on the VSWR; this pinpoints the defect as being just after
the preceding test location.
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