GB2512091B - Improvements in and relating to filters - Google Patents

Improvements in and relating to filters Download PDF

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Publication number
GB2512091B
GB2512091B GB1305082.8A GB201305082A GB2512091B GB 2512091 B GB2512091 B GB 2512091B GB 201305082 A GB201305082 A GB 201305082A GB 2512091 B GB2512091 B GB 2512091B
Authority
GB
United Kingdom
Prior art keywords
filters
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB1305082.8A
Other versions
GB2512091A (en
GB201305082D0 (en
Inventor
John Michael Alison Mr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALISON MICROWAVE Ltd
Original Assignee
ALISON MICROWAVE Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ALISON MICROWAVE Ltd filed Critical ALISON MICROWAVE Ltd
Priority to GB1305082.8A priority Critical patent/GB2512091B/en
Publication of GB201305082D0 publication Critical patent/GB201305082D0/en
Publication of GB2512091A publication Critical patent/GB2512091A/en
Application granted granted Critical
Publication of GB2512091B publication Critical patent/GB2512091B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H01P1/20327—Electromagnetic interstage coupling
    • H01P1/20336—Comb or interdigital filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • 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
    • 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
    • H03H9/6406—Filters characterised by a particular frequency characteristic

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
GB1305082.8A 2013-03-20 2013-03-20 Improvements in and relating to filters Expired - Fee Related GB2512091B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1305082.8A GB2512091B (en) 2013-03-20 2013-03-20 Improvements in and relating to filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1305082.8A GB2512091B (en) 2013-03-20 2013-03-20 Improvements in and relating to filters

Publications (3)

Publication Number Publication Date
GB201305082D0 GB201305082D0 (en) 2013-05-01
GB2512091A GB2512091A (en) 2014-09-24
GB2512091B true GB2512091B (en) 2021-01-06

Family

ID=48226720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305082.8A Expired - Fee Related GB2512091B (en) 2013-03-20 2013-03-20 Improvements in and relating to filters

Country Status (1)

Country Link
GB (1) GB2512091B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600705A1 (en) * 1992-12-01 1994-06-08 Japan Radio Co., Ltd Surface acoustic wave filter and mobile communication system using same
EP0782256A2 (en) * 1995-12-27 1997-07-02 Murata Manufacturing Co., Ltd. Surface acoustic wave resonator filter apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600705A1 (en) * 1992-12-01 1994-06-08 Japan Radio Co., Ltd Surface acoustic wave filter and mobile communication system using same
EP0782256A2 (en) * 1995-12-27 1997-07-02 Murata Manufacturing Co., Ltd. Surface acoustic wave resonator filter apparatus

Also Published As

Publication number Publication date
GB2512091A (en) 2014-09-24
GB201305082D0 (en) 2013-05-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20220320