Millimeter-wave (MMW) synthesizer with FSK modulation transmitte

Details Millimeter-wave (MMW) synthesizer with FSK modulation transmitte Millimeter-wave (MMW) synthesizer with FSK modulation transmitte

1997-01-29

1999-08-17

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

375354, 331 4, 331 2, H03D 324

Patent

active

059404574

ABSTRACT:
A frequency-shift-keyed PLL frequency synthesizer with large frequency-muplication factor, with absolute frequency deviation independent of frequency-multiplication factor. The PLL also has fractional frequency-multiplication-factor programming capability. The PLL is inexpensive to implement, and potentially capable of fast frequency changing, due to lack of need to compensate modulator frequency deviation with possible resulting stabilization-time requirements, associated with each PLL output-frequency change. The PLL frequency synthesizer preferably employs a PLL-DRO and subharmonic mixer to achieve stable, low-noise microwave output frequencies.

REFERENCES:
patent: 4249138 (1981-02-01), Bell
patent: 4707670 (1987-11-01), Dakin
patent: 4755774 (1988-07-01), Heck
patent: 4797637 (1989-01-01), Kegasa et al.
patent: 5408201 (1995-04-01), Uriya

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