Microwave phase detection for angle of arrival detection using a 4-channel optical downconverter

Fiber optic links maintain an advantage over traditional microwave transmit and receive systems in terms of multi-octave operation and RF isolation, and the ability to remote microwave signals great distances. For the first time, a 4-channel optical downconverter capable of detecting the relative microwave phase of incoming microwave signals up to 18 GHz is tested. The phase information can be related to angle of arrival detection. We present the first results of a 4-channel remotable optical downconverter used for phase detection of incoming signals up to 18 GHz. The phase information is related to angle of arrival detection.