Structure of multi-band microwave detector
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United States of America Patent
Stats
-
Nov 8, 1994
Grant Date -
N/A
app pub date -
Apr 26, 1993
filing date -
Apr 28, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microwave detector comprises a one side opened hollow member having a first portion and a second portion, a printed circuit board, on which a metal layer is formed on one side, the metal layer on the printed circuit board cooperating with the hollow member for forming a horn antenna at a position corresponding to the first portion and an oscillation cavity for housing a first local oscillator at a position corresponding to the second portion, the horn antenna including a throat portion communicated with the oscillation cavity, a first mixing circuit disposed in the throat portion, an intermediate frequency processing circuit formed on the other side of the printed circuit board and including a first intermediate frequency filter, a second mixing circuit and a second local oscillator, and means for establishing electrical connection between the first mixing circuit and the intermediate frequency processing circuit across the printed circuit board.
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