H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
343/48
H01Q 3/00 (2006.01) G01S 13/66 (2006.01)
Patent
CA 1184636
ABSTRACT OF THE DISCLOSURE An angular error detecting device in which all components of arriving polarized waves are obtained independent of the type and amount of polarization. A higher mode detector ouputs two higher mode components which are in orthogonal relation. These two components are combined so as to maintain the ortho- gonal relation. A circuit is provided having a set of at least one 90° phase difference plate and one 180° phase difference plate which have rotatable phase lag surfaces and which are cascade-connected. The 90° phase difference plate is provided on the side of the circuit combining the two higher order components. The output of the 180° phase difference plate is divided into first and second orthogonal polarization components. The first polarization component is synchronously detected with a local oscillator output synchronous with reference signals to provide a first angular error output while the output of the second polarization component is synchronously detected with signals shifted 90° in phase from the local oscillator output to thereby provide a second angular error output orthogonal to the first angular error output.
384674
Mitsubishi Denki Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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