Pulse or digital communications – Repeaters – Testing
Patent
1997-02-24
1999-03-30
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
370252, H04B 1500
Patent
active
058898140
ABSTRACT:
Compensation measurements can be made of the transmit and receive path circuitry of a dual FDD/TDD system which can be selectively operated in either the FDD mode or alternately in the TDD mode. BY selectively controlling the switches coupling low frequency and high frequency receivers and coupling low frequency and high frequency transmitters to a diplexer, compensation measurements can be made for both FDD and TDD modes of operation.
REFERENCES:
patent: 3745464 (1973-07-01), Lee
patent: 4979506 (1990-12-01), Silvian
patent: 5058102 (1991-10-01), Heidemann
patent: 5084869 (1992-01-01), Russell
patent: 5243598 (1993-09-01), Lee
patent: 5307341 (1994-04-01), Yates et al.
patent: 5680394 (1997-10-01), Bingham et al.
AT&T Wireless Services Inc.
Chin Stephen
Roundtree Joseph
LandOfFree
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