Oscillators – With distributed parameter resonator – Parallel wire type
Patent
1991-08-02
1992-08-18
Grimm, Siegfried H.
Oscillators
With distributed parameter resonator
Parallel wire type
331108D, 331117D, 331177V, 331186, 361400, 361406, 455 76, 455 87, H03B 512, H03B 518, H03L 100
Patent
active
051402866
ABSTRACT:
A voltage controlled oscillator and buffer amplifier circuit (211) is disclosed. The circuit is in a stacked configuration, whereby, the current from the power supply (361) is used by the buffer amplifier circuit and reused by the VCO circuit. The VCO circuit includes two transistors (333, 325). The transistors are set-up in a mirrored configuration, so that one of the transistors (325) controls the bias current in the other transistor (333). Both of the transistors are integrated into a semiconductor circuit die (365), thus, matching the thermal characteristics of the transistors (333, 325) and improving control of the bias current. The die (365) is bonded to a ceramic substrate (601). The substrate (601) has connectivity paths for connecting components in the circuit die to components external to the circuit die. Some of the connectivity paths are made of a material and length to form passive circuit elements.
REFERENCES:
patent: 3665342 (1972-05-01), Reed
patent: 5068714 (1991-11-01), Seipler
Agahi-Kesheh Darioush
Black Gregory R.
Hietala Alexander W.
Dailey Kirk W.
Grimm Siegfried H.
Kelly Robert W.
Motorola Inc.
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