Heterojunction bipoplar mixer circuitry

Details Heterojunction bipoplar mixer circuitry Heterojunction bipoplar mixer circuitry

1998-08-21

2000-04-04

Jackson, Jr., Jerome

Active solid-state devices (e.g., transistors, solid-state diode

Schottky barrier

In integrated structure

257197, 455 86, 455323, H01L 2702

Patent

active

060464860

ABSTRACT:
Mixer circuitry having a semiconductor body formed therein mixer circuitry having an oscillator having a heterojunction bipolar transistor and a mixer having a Schottky diode. The heterojunction transistor has a collector region formed in one portion of doped layer of the semiconductor body and the diode has a metal electrode is Schottky contact with another portion of such doped layer. The mixer is includes a diode and a DC biasing circuit, comprising a constant current, for biasing such diode to predetermined operating point substantially invariant with power of an input signal fed to such mixer.

REFERENCES:
patent: 3922570 (1975-11-01), Eguchi et al.
patent: 4411022 (1983-10-01), Clifton et al.
patent: 4677691 (1987-06-01), Scott
patent: 5051372 (1991-09-01), Sasaki
patent: 5268315 (1993-12-01), Prasad et al.
patent: 5341112 (1994-08-01), Haman
patent: 5401999 (1995-03-01), Bayraktaroglu
patent: 5753960 (1998-05-01), Dickmann
patent: 5821825 (1998-10-01), Kobayashi

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