Integrated antenna/mixer for the microwave and millimetric wavebands
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United States of America Patent
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Nov 30, 1993
Issued Date -
N/A
app pub date -
Jan 23, 1991
filing date -
Jan 17, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A microwave/millimetric receiver of the kind in which a dielectric lens focusses incoming radiation on to an integrated antenna/mixer supported by a dielectric substrate. In one embodiment the antenna/mixer comprises a slot antenna and diode means coupled thereto for mixing the received signal with a local oscillator signal to form an IF signal. The local oscillator signal may be irradiated on to the antenna/mixer to be picked up by a crossed slot antenna or the local oscillator signal may be directly injected into the antenna/mixer circuit say via a microstrip line. In an alternative embodiment, the slot antenna is replaced by a dipole and a local oscillator signal is directly injected into the antenna/mixer via a coplanar line.
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