Integrated antenna, amplifier and converter for microwave frequencies

摘要

A microwave antenna has associated therewith an integrated amplifier and frequency converter circuit for operating frequencies of from 1 Ghz to 40 Ghz. The circuit may be tuned by variation of a voltage regulated supply which is impressed onto the center conductor of a coaxial output cable. The frequency selective tuning elements are strip lines etched on one side of a double sided printed circuit board. The receiver is designed as an integral part of a quarter spherical reflector which illuminates a resonant cavity in which a stub antenna is mounted. The stub antenna is also directly connected to an input transistor of the amplifier/converter circuit.