KFPA Axial Ratio Tests

The KFPA axial ratio is specified to be 1 dB maximum. Axial ratio tests were completed 14 Jan 2009 on the KFPA single-beam receiver. A linearly polarized CW signal was injected to the dewar circular waveguide, and manually rotated while monitoring the IF output power through an IF filter. Axial Ratio results (dB):

F(GHz)	RCP	LCP
19	0.20	0.44
22	0.62	0.42
24	0.29	0.38
25	0.28	0.34
26	0.54	0.70

-- RogerNorrod - 2009-01-15