Pulse or digital communications – Spread spectrum
Patent
1997-06-26
2000-08-15
Pham, Chi H.
Pulse or digital communications
Spread spectrum
375219, 370276, A61F 206
Patent
active
061047457
ABSTRACT:
A transceiver for performing direct conversion, time division, full duplex, spread spectrum communication using differential binary phase shift modulation comprises: an antenna for respectively transmitting and receiving signals according to a transmission mode and a receiving mode; a time division duplexer, operatively coupled to the antenna, for selecting between the transmission mode and the receiving mode in a given interval, the duplexer using a control signal to switch between the modes; an oscillator for providing an oscillation frequency; a phase shifter, operatively coupled to the oscillator, for shifting the oscillation frequency to a given phase; a first frequency mixer, operatively coupled to the duplexer and the oscillator, for generating a first base band signal by synthesizing the oscillation frequency and a signal received from the antenna through the duplexer in receiving mode; a second frequency mixer, operatively coupled to the duplexer and the phase shifter, for generating a second base band signal by synthesizing the phase shifted oscillation frequency and the received signal from a the duplexer; a demodulator, operatively coupled to the first and second frequency mixers, for generating pseudo noise data by decoding the first and second base band signals; a filter for converting a square wave signal of pseudo noise data to a sine wave signal of the same; and a third frequency mixer, operatively coupled to the filter, for generating a transmission signal by synthesizing the sine wave and the oscillation frequency, the transmission signal being provided to the antenna through the duplexer for transmission in the transmission mode.
REFERENCES:
patent: 5010557 (1991-04-01), Chung
patent: 5398258 (1995-03-01), Su et al.
patent: 5564076 (1996-10-01), Auvray
patent: 5790536 (1998-08-01), Mahany et al.
patent: 5805582 (1998-09-01), Snelling et al.
patent: 5828692 (1998-10-01), Walley
patent: 5878076 (1999-03-01), Siedenberg
Bayard Emmanuel
Pham Chi H.
Samsung Electronics Co,. Ltd.
LandOfFree
Transceiver for performing time division full duplex spread spec does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transceiver for performing time division full duplex spread spec, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transceiver for performing time division full duplex spread spec will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2015319