LTCC fet mixer

Details LTCC fet mixer LTCC fet mixer

2005-10-25

2005-10-25

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S326000, C327S208000

Reexamination Certificate

active

06959180

ABSTRACT:
A wide bandwidth mixer has a low temperature co-fired ceramic substrate. The substrate has a top layer, a bottom layer and inner layers. Vias extend through the substrate. A local oscillator balun and an RF balun are located on the inner layers and connected to the vias. An intermediate frequency balun is mounted to the top layer and connected to the vias. Field effect transistors are mounted on the top layer and connected to the local oscillator balun, the RF balun and the intermediate frequency balun through the vias. A matching network is mounted to the top layer and is connected to the vias. The matching network matches the impedance of the field effect transistors to that at the LO port.

REFERENCES:
patent: 6348830 (2002-02-01), Rebeiz et al.
patent: 6427069 (2002-07-01), Galin

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