Low noise microstrip voltage controlled oscillator

Details Low noise microstrip voltage controlled oscillator Low noise microstrip voltage controlled oscillator

1979-04-27

1982-01-12

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331177V, H03B 518

Patent

active

043108091

ABSTRACT:
The invention comprises a microwave oscillator using a stripline circuit. The active device utilized in the oscillator is a bipolar transistor. A microstrip circuit is coupled to the emitter of the transistor while the collector is coupled to ground. This generates a negative impedance characteristic at the base of the transistor at the operating frequency. The operating frequency is determined by a varactor which is series tuned with an inductor. The impedance of the series tuned circuit is transformed to match the input impedance of the transistor by a microstrip circuit. Microstrip isolation circuits are utilized to couple appropriate bias signals to the emitter and the base to establish the proper operating point for the bipolar transistor. The output signal is taken from the base circuit of the transistor through the series combination of two microstrip circuits and a capacitor. A second varactor is loosely coupled to the base circuit of the transistor to provide for fine tuning. The frequency control characteristic of the oscillator can be made linear by utilizing a hyper abrupt varactor.

REFERENCES:
patent: 3377568 (1968-04-01), Kruse, Jr. et al.
patent: 3798553 (1974-03-01), Sakamoto
patent: 4156211 (1979-05-01), Buswell et al.
patent: 4189690 (1980-02-01), Bock et al.

Affiliated with

Also associated with

Rating

Low noise microstrip voltage controlled oscillator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low noise microstrip voltage controlled oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low noise microstrip voltage controlled oscillator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1543418