VARIABLE ATTENUATOR - YAN YUEJUN

Title:

VARIABLE ATTENUATOR

Document Type and Number:

WIPO Patent Application WO/2006/039850

Kind Code:

A1

Abstract:

The present invention relates to a variable attenuator. The attenuator comprises: a substrate on which a first film resistor is located, both ends of the first film resistor are electrically connected to an input port and an output port respectively, both ends of the first film resistor are also electrically connected to one end of a third film resistor and one end of a fortieth film resistor respectively, the other end of the third film resistor and the other end of the fortieth film resistor are electrically connected to the same end of a second film resistor, and the other end of the second film resistor is coupled to the ground; a first conductive sheet and a second conductive sheet which are respectively electrically connected to the first film resistor and the second film resistor to change the resistance of the first film resistor and the resistance of the second film resistor respectively; and an insulator on which the first conductive sheet and the second conductive sheet are fixed. The present invention is adaptive to apply in high frequency and microwave circuits and systems, and has the advantages in wide band, small size, fabricating easily and low cost.

More Like This:

JP2001060806

SERIAL VARIABLE ATTENUATOR

Inventors:

YAN YUEJUN (CN)
YAN YUEPENG (CN)

Application Number:

PCT/CN2005/000872

Publication Date:

April 20, 2006

Filing Date:

June 17, 2005

Export Citation:

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Assignee:

YAN YUEJUN (CN)
YAN YUEPENG (CN)

International Classes:

H01P1/22; (IPC1-7): H01P1/22

Foreign References:

US6522221B1	2003-02-18
JPH02297902A	1990-12-10
US2810891A	1957-10-22
US3659233A	1972-04-25
JP2000196302A	2000-07-14
CN1338790A	2002-03-06
US2961620A	1960-11-22

Other References: