Modulators – Frequency modulator – Including microwave or distributed parameter structure
Patent
1997-07-03
1999-02-09
Mis, David
Modulators
Frequency modulator
Including microwave or distributed parameter structure
332136, 332141, 331 96, 331107SL, 331117D, 331177V, 455111, 455113, 455129, H03C 300, H03B 518
Patent
active
058700056
ABSTRACT:
A broadcast transmitter for generating low power modulated signals, especially for a wireless speaker system. A signal source such as a source of composite audio signals including left and right audio signals and a pilot signal are applied to a radio frequency signal oscillator. The radio frequency signal oscillator includes a bipolar transistor connected in a common base configuration, and having a stripline element as a frequency determinative component in the collector circuit of the bipolar transistor. The modulating signal is applied to the base of the bipolar transistor which modulates the collector junction capacitance of the transistor thereby frequency modulating the signal produced by the oscillator. Varactor tuning is provided for setting a nominal frequency of oscillation.
REFERENCES:
patent: 3590382 (1971-06-01), Kenney
patent: 3723906 (1973-03-01), Pedersen
patent: 3927316 (1975-12-01), Citta
patent: 4334315 (1982-06-01), Ono et al.
patent: 4370626 (1983-01-01), Ushida
patent: 4829570 (1989-05-01), Schotz
patent: 4847903 (1989-07-01), Schotz
patent: 5299264 (1994-03-01), Schotz et al.
patent: 5410735 (1995-04-01), Borchardt et al.
patent: 5432858 (1995-07-01), Clair, Jr. et al.
patent: 5491839 (1996-02-01), Schotz
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