Antenna coupling systems and methods for transmitters

Details Antenna coupling systems and methods for transmitters Antenna coupling systems and methods for transmitters

2005-05-03

2005-05-03

Hudspeth, David (Department: 2681)

Telecommunications

Transmitter

Plural modulation

C455S103000, C455S121000, C455S082000

Reexamination Certificate

active

06889034

ABSTRACT:
Multiple radio channel frequency signals that are modulated with respective information modulation are transmitted from a common antenna at multiple radio frequencies. Multiple modulators are provided, a respective one of which corresponds to a respective one of the radio channel frequencies. Each modulator generates at least one constant amplitude, phase modulated drive signal at the corresponding radio channel frequency from the respective information modulation, such that the at least one constant amplitude, phase modulated drive signal corresponds to the information modulation for the corresponding radio frequency. At least one saturated power amplifier is provided for each of the at least one constant amplitude, phase modulated drive signals. A respective saturated power amplifier is responsive to the corresponding constant amplitude, phase modulated drive signal, to produce a corresponding amplified output signal at an output thereof. A coupling network connects the outputs of the saturated power amplifiers in series, to produce a combined signal that is applied to the common antenna, such that the common antenna radiates the radio channel frequency signals that are modulated with the respective information modulation. In first embodiments, the at least one constant amplitude, phase modulated drive signal is a single constant envelope modulation drive signal, wherein the information modulation is a constant envelope information modulation. In other embodiments, at least two constant amplitude phase modulated drive signals are provided at the corresponding radio channel frequency, such that the at least two constant amplitude, phase modulated drive signals correspond to the information modulation for the corresponding radio frequency.

REFERENCES:
patent: 2210028 (1940-08-01), Doherty
patent: 3777275 (1973-12-01), Cox
patent: 3805139 (1974-04-01), Hoffman, Jr. et al.
patent: 3886452 (1975-05-01), Seidel
patent: 3906401 (1975-09-01), Seidel
patent: 3909742 (1975-09-01), Cox et al.
patent: 3927379 (1975-12-01), Cox et al.
patent: 4090147 (1978-05-01), Seidel
patent: 4178557 (1979-12-01), Henry
patent: 4315107 (1982-02-01), Ciesielka et al.
patent: 4420723 (1983-12-01), de Jager
patent: 4433312 (1984-02-01), Kahn
patent: 4485357 (1984-11-01), Voorman
patent: 4580111 (1986-04-01), Swanson
patent: 5086450 (1992-02-01), Kitagawa et al.
patent: 5249201 (1993-09-01), Posner et al.
patent: 5305384 (1994-04-01), Ashby et al.
patent: 5329245 (1994-07-01), Hammond et al.
patent: 5365187 (1994-11-01), Hornak et al.
patent: 5420541 (1995-05-01), Upton et al.
patent: 5453717 (1995-09-01), Gerfault
patent: 5499389 (1996-03-01), Victorin
patent: 5568088 (1996-10-01), Dent et al.
patent: 5574967 (1996-11-01), Dent et al.
patent: 5584057 (1996-12-01), Dent
patent: 5631604 (1997-05-01), Dent et al.
patent: 5638024 (1997-06-01), Dent et al.
patent: 5638401 (1997-06-01), Jones
patent: 5659886 (1997-08-01), Taira et al.
patent: 5734565 (1998-03-01), Mueller et al.
patent: 5815531 (1998-09-01), Dent
patent: 5933766 (1999-08-01), Dent
patent: 5959984 (1999-09-01), Dent
patent: 5974101 (1999-10-01), Nago
patent: 6097252 (2000-08-01), Sigmon et al.
patent: 6415001 (2002-07-01), Li et al.
patent: 20020058490 (2002-05-01), Sorrells et al.
patent: 0 471 346 (1992-02-01), None
patent: 0 725 478 (1996-08-01), None
patent: 2 267 402 (1993-12-01), None
PCT/US01/24041, Invitation to Pay Additional Fees (date of mailing: Feb. 10, 2003).
International Search Report, PTO/US99/05681, Jul. 6, 1999.
Chireix,High Power Outphasing Modulation, Proceedings of the Institute of Radio Engineers, vol. 23, No. 11, Nov. 1935, pp. 1370-1392.

Affiliated with

Also associated with

Rating

Antenna coupling systems and methods for transmitters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna coupling systems and methods for transmitters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna coupling systems and methods for transmitters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3368642