Title:
HIGH-FREQUENCY FILTER
Document Type and Number:
WIPO Patent Application WO/2011/033573
Kind Code:
A1
Abstract:
Provided is a small and low-loss high-frequency filter which is constituted by a combination of a band rejection filter and other filter circuit elements. The high-frequency filter comprises a band rejection filter constituted by a plurality of reflection type resonance elements, and a filter circuit element provided between the reflection type resonance elements, wherein an electrical length between the reflection type resonance elements between which the filter circuit element is provided, is an odd multiple of 90 degrees in the stopband of the band rejection filter.
Inventors:
KAWAGUCHI TAMIO
KAYANO HIROYUKI
KAYANO HIROYUKI
Application Number:
PCT/JP2009/004718
Publication Date:
March 24, 2011
Filing Date:
September 18, 2009
Export Citation:
Assignee:
TOSHIBA KK (JP)
KAWAGUCHI TAMIO
KAYANO HIROYUKI
KAWAGUCHI TAMIO
KAYANO HIROYUKI
International Classes:
H01P1/203; H01P5/02; H01P7/08
Foreign References:
| JP2003258504A | 2003-09-12 | |||
| JPH10322155A | 1998-12-04 | |||
| JPH0555857A | 1993-03-05 | |||
| JP2002290117A | 2002-10-04 | |||
| JP2008505573A | 2008-02-21 |
Attorney, Agent or Firm:
MATSUYAMA, Masayuki et al. (JP)
Mitsuyuki Matsuyama (JP)
Mitsuyuki Matsuyama (JP)
Download PDF: