Mixer

Details Mixer Mixer

1996-10-17

1998-02-10

Mis, David

Modulators

Frequency modulator

Including discrete semiconductor device

332146, 332178, 327119, 331 42, 455333, H03B 2100, H03C 300, H04B 128

Patent

active

057173648

ABSTRACT:
A small and inexpensive mixer that does not require a choke inductor and a large-capacitance capacitor. The mixer has a FET. The FET's source is grounded via a capacitor and is also connected to a power-supply terminal. The FET's gate is coupled to a bias voltage and also connected to a gate input terminal via a capacitor. The FET's drain is connected to an output terminal via a capacitor. A modulating signal is input into the power-supply terminal, and a local signal is input into the gate input terminal, so that a modulated signal is output from the output terminal.

REFERENCES:
patent: 5263198 (1993-11-01), Geddes et al.
patent: 5325000 (1994-06-01), Birkeland et al.
"Low Power Quadrature Modulator IC's for Digital Mobile Communications", by Yasushi Yamao and Shigeki Saito, Society of Electro Information and Communication, C-I, vol. J76-C-1 No. 11, pp. 453-461. Nov. 1993.

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