Telecommunications – Transmitter – With feedback of modulated output signal
Patent
1997-10-24
1999-07-27
Chin, Wellington
Telecommunications
Transmitter
With feedback of modulated output signal
455271, 455280, 455281, 455282, 327238, 327254, 327258, 327291, 375371, 375298, 375261, 375300, H01Q 1112
Patent
active
059306890
ABSTRACT:
An apparatus and method produce a plurality of output signals (917-921) with fixed phase relationships therebetween. The apparatus (900) includes a first signal generator (901), a second signal generator (903), and a signal processor (907). The first signal generator produces a first input signal (911) at a first frequency. The second signal generator produces a second input signal (915) at a second frequency, wherein the second frequency is an integer multiple of the first frequency. The signal processor receives the first and second input signals and produces a plurality of output signals (917-921) having fixed phase relationships therebetween at the first frequency, wherein the fixed phase relationships are based on the integer multiple and wherein each of the output signals has a single, determinate phase relative to the phase of the first input signal.
REFERENCES:
patent: 3626308 (1971-12-01), Paine
patent: 5066923 (1991-11-01), Gailus et al.
patent: 5375258 (1994-12-01), Gillig
patent: 5808498 (1998-09-01), Donnely et al.
Gailus Paul H.
Wilhite Jeffrey B.
Zbotaniw Rostyslaw
Chin Wellington
Crilly Daniel C.
Motorola Inc.
Smith Sheila
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