Title:
圧電共振子を含むフィルタ構造
Document Type and Number:
Japanese Patent JP4654220
Kind Code:
B2
Abstract:
A filter structure (1090, 1100, 1200) comprises a first piezoelectric resonator (1021a), whose resonance frequency is a first resonance frequency and which is connected to an input conductor (1030a, 1030b). In order to increase the power handling capacity of the filter structure, it comprises other piezoelectric resonators connected in series with the first piezoelectric resonator. In this plurality (1020, 1110, 1220) of piezoelectric resonators, each resonator has a resonance frequency substantially equal to the first resonance frequency. The plurality (1020, 1110, 1220) of piezoelectric resonators is connected to the rest of the filter structure only through the first piezoelectric resonator (1021a) at one end of said plurality and through a second piezoelectric resonator (1021b), which is at the other end said plurality. The impedance of said plurality is arranged to match the impedance level of the filter structure. An arrangement for transmitting and for transmitting and receiving radio frequency signal is also described.
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Inventors:
Pacifica
Juha Ella
Juha Ella
Application Number:
JP2007128094A
Publication Date:
March 16, 2011
Filing Date:
May 14, 2007
Export Citation:
Assignee:
Avago Technologies Wireless IP (Singapore) Private Limited
International Classes:
H03H9/54; H01L41/09; H01L41/18; H03H9/00; H03H9/17; H03H9/58; H03H9/60; H03H9/64
Domestic Patent References:
| JP11251871A | ||||
| JP10150342A | ||||
| JP9064683A | ||||
| JP9205343A | ||||
| JP10303698A | ||||
| JP9069749A | ||||
| JP2000232334A |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Masayuki Okamoto
Fukagawa Eri
Satoshi Morimoto
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Masayuki Okamoto
Fukagawa Eri
Satoshi Morimoto