Telecommunications – Receiver or analog modulated signal frequency converter – Plural receivers
Patent
1994-12-23
1997-12-09
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Plural receivers
455134, 455275, 4552771, H04B 708
Patent
active
056970757
ABSTRACT:
A diversity apparatus for a global positioning system antenna capable of selectively using a better receiving sensitivity antenna among antennas is disclosed. The invention includes at least two antennas; first and second amplification comparing means for amplifying signals received from the antenna through a low noise amplifier and a coupling line and for comparing a direct current with a base voltage; selection means for selecting one antenna among the antennas by activating an impedance line; and first and second connection means for determining from the amplified signals, which of the antenna signals to output, and outputting the alternating current signal from that antenna.
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patent: 5194871 (1993-03-01), Counselman, III
patent: 5214393 (1993-05-01), Aihara
patent: 5345591 (1994-09-01), Tsurumaki et al.
patent: 5390357 (1995-02-01), Nobusawa et al.
Eisenzopf Reinhard J.
Hyundai Electronics Industries Co,. Ltd.
Klein David M.
Le Thanh
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