Title:
ANTENNA SHARING UNIT AND COMMUNICATION EQUIPMENT
Document Type and Number:
Japanese Patent JP2003115782
Kind Code:
A
Abstract:
To provide a compact antenna sharing unit having excellent electric characteristics, high reliability, and high stability and communication equipment using this antenna sharing unit.
This antenna sharing unit is provided with a receiving filter 1 being a filter having surface acoustic wave elements, transmitting filters 7, 10, and 4 being filters having dielectric laminate structures, and a matching circuit 3 for matching the receiving filter 1 and the transmitting filters 7, 10, and 4 with the antenna. In this case, the transmitting filters 7, 10, and 4 and the receiving filter 1 and the matching circuit 3 are integrated.
Inventors:
MAEKAWA TOMOYA
NAKAMURA HIROYUKI
YAMADA TORU
ISHIZAKI TOSHIO
NAKAMURA HIROYUKI
YAMADA TORU
ISHIZAKI TOSHIO
Application Number:
JP2002213069A
Publication Date:
April 18, 2003
Filing Date:
July 22, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H01P1/203; H01P1/205; H01P1/213; H04B1/50; (IPC1-7): H04B1/50; H01P1/203; H01P1/205; H01P1/213
Attorney, Agent or Firm:
Masamichi Matsuda