High-frequency device

Patent 6072992 Issued on June 6, 2000. Estimated Expiration Date:

July 17, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Stripline circuit and method for regulating the characteristics thereof
Patent #: 4912437
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PLL circuit modulatable by a modulation signal having a direct current component Patent #: 5461348
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Inventors

Assignee

Matsushita Electric Industrial Co., Ltd.

Application

No. 894762 filed on 07/17/1998

US Classes:

455/76, Synthesizer331/25, Signal or phase comparator375/376, Phase locked loop455/130, RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER455/260, Phase lock loop or frequency synthesizer455/264, Voltage control of oscillator455/265With local oscillator synchronization or locking

Examiners

Primary: Trost, William
Assistant: Davis, Temica M.

Attorney, Agent or Firm

Ratner & Prestia

Foreign Patent References

2071817 CA. 03/13/1992
0133799 EP. 03/13/1985
0673115A1 EP. 09/13/1995
55-050724 JP. 04/13/1980
57-089304 JP. 06/13/1982
58-16260 JP. 04/13/1983
60-33727 JP. 02/13/1985
61-120528 JP. 06/13/1986
64-25236 JP. 02/13/1989
02-151101 JP. 06/13/1990
4-70217 JP. 03/13/1992
5-276208 JP. 10/13/1993
7-245633 JP. 09/13/1995
2282285 GB. 03/13/1995

International Classes

H03J 003/28
H03J 005/02
H03L 007/08
H04L 027/22

Abstract

A high frequency apparatus for receiving digital modulated high frequency signal which withstands vibration and is easy to adjust for tuning, yet presents clear oscillation signal. The invented apparatus has an input terminal(101), a mixer(104) which receives at one input the signals supplied to input terminal(101) and at the other input an output signal of local oscillator(103), and output terminals(107,108) to which the output signal of mixer(104) is delivered. A voltage controlled oscillator constituting said local oscillator(103) has an oscillating section and a tuning section; the tuning section has a movable conductive member(119) and a gluing agent(120) for maintaining a state after adjustment. Control loop has a high loop band width which is large enough so as the noise of local oscillator(103) is not dominated by noise of the above mentioned voltage controlled oscillator.