Low temperature co-fired ceramic double balanced mixer

Details Low temperature co-fired ceramic double balanced mixer Low temperature co-fired ceramic double balanced mixer

2006-04-11

2006-04-11

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S326000, C327S208000

Reexamination Certificate

active

07027795

ABSTRACT:
A double balanced mixer with improved isolation between the LO and RF frequency signals. The mixer has a local oscillator balun, an intermediate frequency balun and an RF balun. The baluns are located on inner layers of a substrate comprised of low temperature co-fired ceramic. The baluns are formed from spiral lines that form windings. The windings are coupled between adjacent layers. The local oscillator balun is connected to the intermediate frequency balun. A diode ring is connected between the RF balun and the intermediate frequency balun. The diode ring is mounted to a top layer. Several vias extend through the substrate. The vias provide an electrical connection between the baluns and the diode ring.

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

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