Title:
CAVITY FILTER, ONE-SEGMENT BROADCASTING TRANSMITTER, AND ONE-SEGMENT BROADCASTING SYSTEM
Document Type and Number:
Japanese Patent JP2014168178
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To achieve a reduced size in a cavity filter.SOLUTION: A cavity filter includes two filter chambers 64, 66 at the inside of a housing having a rectangular form and conductivity, the filter chambers being partitioned along a longitudinal center axis of the housing, and accommodates a series circuit including a central inductor L2 and a variable capacitor VC1 and a pair of input/output inductors L1, L3 electromagnetically coupled to the central inductor, and a series circuit including a central inductor L5 and a variable capacitor VC2 and a pair of input/output inductors L4, L6 electromagnetically coupled to the central inductor, in each filter chamber, respectively. The series circuits and input/output inductors are arranged to be in a reverse direction each other along the longitudinal direction of the housing in each filter chamber, and thereby input/output terminals T1 and T2 of the cavity filter are disposed at both ends in the longitudinal direction of the housing to reduce the size of the cavity filter.
Inventors:
YOSHIDA HITOSHI
URAWA HIDENORI
SAHO TAKURO
URAWA HIDENORI
SAHO TAKURO
Application Number:
JP2013039602A
Publication Date:
September 11, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
MASPRO DENKO KK
International Classes:
H01P1/20; H01P11/00
Domestic Patent References:
| JPS59230301A | 1984-12-24 | |||
| JPS58170101A | 1983-10-06 | |||
| JP2010183360A | 2010-08-19 | |||
| JP2008271390A | 2008-11-06 |
Foreign References:
| US20020118081A1 | 2002-08-29 |
Attorney, Agent or Firm:
Nagoya international patent business corporation
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