Title:
HIGH-FREQUENCY SIGNAL FILTERING CIRCUIT DEVICE
Document Type and Number:
Japanese Patent JP3710715
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a high-frequency signal filtering circuit device that needs only fewer circuit technology and semiconductor manufacturing technology cost than those of the conventional circuit device, while keeping the same filtering quality.
SOLUTION: This high frequency signal filtering circuit device has a terminal receiving a control signal, an oscillator able to control the frequency so as to control the resonance frequency, at least one filter having an adjustable pass band with respect to a valid signal, and a device that supplies a correction signal. The high-frequency signal filtering circuit device is characterized, in that the filter includes a frequency revision element having 1st and 2nd terminals, the 1st terminal is coupled with the terminal which receives the control signal, the device is provided with a terminal for the correction signal, and the terminal is coupled with the 2nd terminal of the frequency revision element.
Inventors:
Erwin Krug
Application Number:
JP2001045642A
Publication Date:
October 26, 2005
Filing Date:
February 21, 2001
Export Citation:
Assignee:
Infineon Technolgies SC300 GmbH & Co.KG
International Classes:
H03H7/12; H03J3/08; H03J3/32; H04B1/18; H04N5/44; (IPC1-7): H04B1/18; H03H7/12; H03J3/32; H04N5/44
Domestic Patent References:
| JP61274414A |
Other References:
KLEIN W ET AL,TV-TUNER ATA,RADIO FERNSEHEN ELEKTRONIK,ドイツ,VEB VERLAG TECKNIK,1995年 2月 1日,第44巻、第2号,26-27
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
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