Pulse or digital communications – Repeaters – Testing
Patent
1997-06-11
1999-05-04
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375256, 375317, 375340, 375345, 329311, 342 21, 342 89, 342 91, 342 94, H04B 169, H04B 1402, G01S 734, H04L 2506
Patent
active
059011726
ABSTRACT:
An UWB receiver utilizing a microwave tunnel diode as a single pulse detector for short pulse, impulse, baseband or ultra wideband signals. The tunnel diode detector's bias point is set at system start-up, through an automatic calibration procedure to its highest sensitivity point relative to the desired bit error rate performance (based upon internal noise only) and remains there during the entire reception process. High noise immunity is achieved through the use of a high speed, adaptive dynamic range extension process using a high speed, Gallium Arsenide (GaAs) voltage variable attenuator (VVA) whose instantaneous attenuation level is determined by a periodic sampling of the ambient noise environment. Microprocessor-controlled detector time-gating is performed to switch the tunnel diode detector to the receiver front end circuitry for reception of an incoming UWB pulse, and alternately to ground through a resistor to discharge stored charge on the tunnel diode detector. In a second embodiment, two tunnel diode detectors are utilized in parallel, one biased for data detection and the other biased for noise detection, such that data detection can be interpreted based on simultaneous comparison to both a data threshold and a noise threshold.
REFERENCES:
patent: 3662316 (1972-05-01), Robbins
patent: 3781878 (1973-12-01), Kirkpatrick
patent: 3983422 (1976-09-01), Nicolson et al.
patent: 4688041 (1987-08-01), Cronson et al.
patent: 4688042 (1987-08-01), Cronson et al.
patent: 4695752 (1987-09-01), Ross et al.
patent: 4813057 (1989-03-01), Fullerton
patent: 4979186 (1990-12-01), Fullerton
patent: 5337054 (1994-08-01), Ross et al.
patent: 5363108 (1994-11-01), Fullerton
patent: 5523760 (1996-06-01), McEwan
patent: 5757320 (1998-05-01), McEwan
Fontana Robert J.
Larrick, Jr. J. Frederick
Chin Stephen
Gluck Jeffrey W.
Multispectral Solutions, Inc.
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