Telecommunications – Transmitter and receiver at separate stations – With control signal
Patent
1994-08-17
1997-11-18
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
With control signal
4552262, 455311, 455341, H04B 116
Patent
active
056898142
ABSTRACT:
Part of a first signal path for amplifying a signal includes circuits for detecting a signal, and a second signal path connected to an input portion of the first signal path includes circuits for detecting the signal. A signal strength detector circuit adds outputs from the respective detector circuits in the first and second signal paths. The first signal path has a function of expanding the dynamic range in a smaller signal region as compared with the second signal path, while the second signal path has a function of expanding the dynamic range in a larger signal region as compared with the first signal path. When a radio transmitted output is variably controlled in a radio transmitter section based on a field strength detection output for a received signal, the transmitted output is optimized, resulting in minimizing consumed power and unnecessary radiation of radio waves.
REFERENCES:
patent: 4109206 (1978-08-01), Numafa
patent: 4247949 (1981-01-01), Watanabe et al.
patent: 4553105 (1985-11-01), Sasaki
patent: 4701719 (1987-10-01), Nagata
patent: 4794343 (1988-12-01), Yang
patent: 4890332 (1989-12-01), Takahashi
patent: 4920321 (1990-04-01), Armstrong
patent: 4972512 (1990-11-01), Garskamp
patent: 5057788 (1991-10-01), Ushida et al.
patent: 5125105 (1992-06-01), Kennedy et al.
patent: 5129098 (1992-07-01), McGerr et al.
patent: 5136259 (1992-08-01), Sato et al.
patent: 5212834 (1993-05-01), Nuqvist
patent: 5311144 (1994-05-01), Grasset
patent: 5386588 (1995-01-01), Yasuda
Hitachi Review, vol. 42 No. 3, Jun. 1993, "Mobil Communication System: Its Semiconductor Technology", pp. 95-124.
Hagisawa Hiroshi
Matsuoka Tadashi
Takahashi Kenji
Takahashi Kyoichi
Waki Michio
Eisenzopf Reinhard J.
Hitachi , Ltd.
Hitachi Microcomputer System Ltd.
Le Thanh
LandOfFree
Radio communication apparatus with expanded dynamic range does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radio communication apparatus with expanded dynamic range, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio communication apparatus with expanded dynamic range will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1574798