Voltage controlled oscillator small in reduction of...

Details Voltage controlled oscillator small in reduction of... Voltage controlled oscillator small in reduction of...

2006-11-28

2006-11-28

Kinkead, Arnold (Department: 2817)

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

C331S1070DP, C331S096000, C331S10800D

Reexamination Certificate

active

07142068

ABSTRACT:
The voltage controlled oscillator contains a circuit board having a laminate of a plurality of insulating plates, a wiring pattern formed on a surface of the circuit board, an electronic part mounted on the surface of the circuit board, a resonance strip line provided on an inner layer of the circuit board, and a ground pattern formed on an inner layer of the circuit board which is disposed between the wiring pattern and the strip line. Further, a conductor-deleted portion of the ground pattern faces the vicinity including a portion having a high current density in the strip line. Thus, reductions of inductance and Q are small. In addition, a portion of the strip line is shielded by means of the ground pattern with respect to the wiring pattern.

REFERENCES:
patent: 5227739 (1993-07-01), Mandai et al.
patent: 6388535 (2002-05-01), Otsuki et al.
patent: 1 172 882 (2002-01-01), None
patent: 05-136612 (1993-06-01), None
patent: 05136612 (1993-09-01), None
patent: 2001-60827 (2001-03-01), None
patent: 2001136028 (2001-03-01), None
Search Report dated Mar. 15, 2005 for European Patent Application No. EP 04 02 7441.

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