ANTIRESONANT FREQUENCY-VARYING COMPOUND RESONANT CIRCUIT

WIPO Patent Application WO/2011/099438

A1

Disclosed is an antiresonant frequency-varying compound resonant circuit wherein a wide range of frequency variation can be set with a high degree of freedom whilst maintaining a resonance sharpness (Q) value within a desired range, and whilst maintaining good linearity for the frequency at the lowest output of the frequency characteristic curves of the antiresonant frequency-varying compound resonant circuit. The disclosed circuit comprises: a first current path which performs a first phase shift and a first gain adjustment on an AC power signal being supplied; at least one second current path which performs a second phase shift and a second gain adjustment, having a different shift amount and a different adjustment amount to the first phase shift and the first gain adjustment, on the AC power signal; at least two resonant circuits, which are provided in the first and the second current paths respectively, have mutually different resonance points or antiresonance points to each of the AC power signals going through the first and second current paths, and integrate each of the AC power signals; and an analogue calculation circuit which performs analogue addition or subtraction on the AC power signals which have gone through the first and the second current paths and outputs the results.

HIRAMA KOICHI (JP)

PCT/JP2011/052499

August 18, 2011

February 07, 2011

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MARCDEVICES CO LTD (JP)
HIRAMA KOICHI (JP)

H03H7/01; H03H5/00; H03H11/04

WO2006046672A1	2006-05-04
WO2010119717A1	2010-10-21

JP2007295256A	2007-11-08
JP2000315914A	2000-11-14

FUJIMURA PATENT BUREAU, P. C. (JP)
Patent business corporation Toson joint patent firm (JP)

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