Title:
携帯受信装置とこれに用いる分波器
Document Type and Number:
Japanese Patent JP4292914
Kind Code:
B2
Abstract:
A matching device causes an antenna to match a receiving section arranged to receive a signal in a first frequency band and a signal in a second frequency band lower than the first frequency band. The matching device includes a first terminal arranged to be connected to the antenna, a first inductor connected between the first terminal and a first node, a second inductor connected between the first node and a ground, a first capacitor connected between the first node and a second node, a second terminal arranged to be connected to the receiving section, the second terminal being connected to the second node, and a third inductor connected between the second node and the ground. The second inductor has a capacitive impedance in the first frequency band, and has an inductive impedance in the second frequency band. This matching device can supply a signal in the second frequency band received by the antenna to the receiving section with a small loss. The antenna having a small length can receive a signal of low frequencies and long wavelengths in the second frequency band.
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Inventors:
Yasuhiro Hibino
Kamimoto Ryuichi
Akira Ito
Kamimoto Ryuichi
Akira Ito
Application Number:
JP2003288724A
Publication Date:
July 08, 2009
Filing Date:
August 07, 2003
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H03H7/075; H03H7/46; H01Q1/24; H03H7/38; H04B1/18
Domestic Patent References:
| JP2002009505A | ||||
| JP10126220A | ||||
| JP9130285A | ||||
| JP7162251A | ||||
| JP51111507U |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano