Double balanced FET mixer with high IP3 and IF response down...

Details Double balanced FET mixer with high IP3 and IF response down... Double balanced FET mixer with high IP3 and IF response down...

2005-10-18

2005-10-18

Urban, Edward F. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S326000, C455S333000

Reexamination Certificate

active

06957055

ABSTRACT:
A double balanced FET mixer that has a high third order intercept point and an intermediate frequency response that goes to direct current levels. The mixer includes a local oscillator terminal, a RF terminal and an intermediate frequency terminal. The mixer has a pair of field effect transistors. Each field effect transistor has a gate, a drain and a source electrode. The source electrodes of the first and second transistors are connected together. A first balun transformer is connected between the local oscillator terminal and the gates. A second balun transformer is connected between the drains and the RF terminal and the intermediate frequency terminal.

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