TW325607B - Filter device and dual-band radio system in which the filter device is used - Google Patents
Filter device and dual-band radio system in which the filter device is usedInfo
- Publication number
- TW325607B TW325607B TW085101682A TW85101682A TW325607B TW 325607 B TW325607 B TW 325607B TW 085101682 A TW085101682 A TW 085101682A TW 85101682 A TW85101682 A TW 85101682A TW 325607 B TW325607 B TW 325607B
- Authority
- TW
- Taiwan
- Prior art keywords
- filter
- filter device
- filter elements
- filter element
- dual
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
- H03H9/0566—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers
- H03H9/0576—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers including surface acoustic wave [SAW] devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6483—Ladder SAW filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
- H03H9/725—Duplexers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2240/00—Indexing scheme relating to filter banks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2250/00—Indexing scheme relating to dual- or multi-band filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/1455—Transducers of particular shape or position constituted of N parallel or series transducers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21612695 | 1995-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW325607B true TW325607B (en) | 1998-01-21 |
Family
ID=16683672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW085101682A TW325607B (en) | 1995-08-24 | 1996-02-10 | Filter device and dual-band radio system in which the filter device is used |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1144421A (zh) |
DE (1) | DE19607500A1 (zh) |
TW (1) | TW325607B (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09121138A (ja) * | 1995-08-24 | 1997-05-06 | Fujitsu Ltd | フィルタ装置及びこれを用いた無線装置 |
JP3244032B2 (ja) | 1997-08-22 | 2002-01-07 | 株式会社村田製作所 | 弾性表面波装置 |
JPH11127052A (ja) * | 1997-10-24 | 1999-05-11 | Murata Mfg Co Ltd | 複合フィルタ及びそれを用いた無線装置 |
JP3403669B2 (ja) * | 1999-06-04 | 2003-05-06 | 富士通株式会社 | アンテナ分波器 |
JP3818896B2 (ja) * | 2001-11-26 | 2006-09-06 | 富士通メディアデバイス株式会社 | 分波器及びこれを用いた電子装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2021547A6 (es) * | 1990-06-06 | 1991-11-01 | Reolid Lopez Ricardo | Red de filtro de paso y o eliminacion de banda en senales electricas. |
DE4132907A1 (de) * | 1991-10-04 | 1993-04-08 | Thomson Brandt Gmbh | Filteranordnung |
-
1996
- 1996-02-10 TW TW085101682A patent/TW325607B/zh active
- 1996-02-29 DE DE19607500A patent/DE19607500A1/de not_active Ceased
- 1996-03-04 CN CN96104227A patent/CN1144421A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN1144421A (zh) | 1997-03-05 |
DE19607500A1 (de) | 1997-02-27 |
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