Frequency synthesis method and a synthesizer apparatus using thi

Details Frequency synthesis method and a synthesizer apparatus using thi Frequency synthesis method and a synthesizer apparatus using thi

1986-10-21

1990-04-03

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 102

Patent

active

049146130

ABSTRACT:
A synthesizer apparatus is provided allowing very high speed switching while keeping phase continuity. It includes a plurality of cells, each with four mixers, a subtractor and an adder for obtaining at the output two in quadrature signals, of jump frequency .-+.n F.sub.r, n being an integer, from in quadrature signals of a basic frequency F.sub.r. These signals are then multiplied in a terminal circuit with two in quadrature signals relative to a carrier frequency Fc then added so as to produce the signal transposed to the frequency F.sub.c .-+.n F.sub.r desired for use.

REFERENCES:
patent: 4159526 (1979-06-01), Mosley, Jr. et al.
patent: 4285044 (1981-08-01), Thomas et al.
patent: 4577287 (1986-03-01), Chrin
patent: 4618966 (1986-10-01), Stepp et al.
V. K. Bhargava et al., p. 69, J. Wiley, New York, 1981 "Digital Communications".

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