Pulse or digital communications – Transmitters – Angle modulation
Patent
1997-07-09
2000-03-21
Chin, Stephen
Pulse or digital communications
Transmitters
Angle modulation
375295, 455115, 455121, H03K 706
Patent
active
060410833
ABSTRACT:
A method and a system for tuning a resonance module in a radio base station is disclosed. The resonance module has tuning means, a transmitter connection, and an antenna connection. High-frequency input and output signals on the transmitter and antenna connection, respectively, are sensed and processed to tune the resonance module to a frequency of the input signal on the transmitter connection. The processing of the sensed input and output signals includes processing in a low-frequency range. Prior art methods are improved by the invention through the use of a quadrature modulator to increase adjustment speed and overall applicability of the resonance module to be tuned.
REFERENCES:
patent: 3188568 (1965-06-01), Monachesi
patent: 3271684 (1966-09-01), Simon
patent: 3904966 (1975-09-01), Firman
patent: 5034697 (1991-07-01), Johnson
patent: 5491715 (1996-02-01), Flaxl
Folkesson Rolf
Larsson Lennart
Allgon AB
Chin Stephen
Ghayour Mohammad
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