Pulse or digital communications – Receivers
Patent
1996-12-12
2000-05-23
Pham, Chi H.
Pulse or digital communications
Receivers
375373, 455 121, H03K 900
Patent
active
060673281
ABSTRACT:
A GPS system (12) including an antenna (12), a GPS receiver (14), and a baseband subsystem (16) is disclosed. The receiver (14) includes a reference clock (20), a down converter (22), and a baseband detector (24). The baseband detector (24) is coupled with the output of the down converter (22) and includes a numerically controlled oscillator (30), an adder circuit (32), a code generator (34), a code mixer (36), and a carrier mixer (38). The adder (32) corrects errors caused by clock errors generated by the receiver's reference clock (20) as they occur by adding a clock correction frequency to the oscillator (30) signals.
REFERENCES:
patent: 3537121 (1970-11-01), Lenen
patent: 4336616 (1982-06-01), Frosch
patent: 4578678 (1986-03-01), Hurd
patent: 4594727 (1986-06-01), Pierce
patent: 4613977 (1986-09-01), Wong
patent: 4651154 (1987-03-01), Wong
patent: 4689626 (1987-08-01), Hori
patent: 4691176 (1987-09-01), Hsiung
patent: 4968981 (1990-11-01), Sekine
patent: 5049830 (1991-09-01), Yoshida
patent: 5150384 (1992-09-01), Cahill
patent: 5175729 (1992-12-01), Borras
patent: 5185610 (1993-02-01), Ward et al.
patent: 5247543 (1993-09-01), Tsuda
patent: 5402442 (1995-03-01), Ishigaki
patent: 5402450 (1995-03-01), Lennen
patent: 5535278 (1996-07-01), Cahn et al.
patent: 5621416 (1997-04-01), Lenen
patent: 5663733 (1997-09-01), Lennen
patent: 5724046 (1998-03-01), Martin et al.
patent: 5896304 (1997-07-01), Tiemann et al.
patent: 5901183 (1996-09-01), Garin et al.
Cooley Rick
Lewellen Guy
Allied-Signal
Bayard Emmanuel
Pham Chi H.
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