Pulse or digital communications – Repeaters – Testing
Patent
1994-09-23
1998-09-22
Ghebretinsae, Temesghen
Pulse or digital communications
Repeaters
Testing
375316, 455314, 331 22, H04L 2730, H04B 126
Patent
active
058125914
ABSTRACT:
A GPS frequency converter is provided, according to the present invention, to down-convert the frequency of an incoming GPS signal. The converter includes first and second mixers, the former of which receives the incoming RF signal and a signal from a local oscillator. The local oscillator signal is increased by a factor of 98 and then subtracted from the incoming RF signal to produce a first intermediate frequency signal (IF). The first IF signal is then passed to the second mixer which subtracts the frequency of the local oscillator therefrom to produce a second intermediate frequency signal (IF). The second IF signal is passed through a limiter and output as the frequency converted signal.
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Burrell Gary L.
Casey David D.
Shumaker Paul K.
Garmin Corporation
Ghebretinsae Temesghen
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