GB0907292D0 - Acoustically coupled resonators and method of making the same - Google Patents

Acoustically coupled resonators and method of making the same

Info

Publication number
GB0907292D0
GB0907292D0 GBGB0907292.7A GB0907292A GB0907292D0 GB 0907292 D0 GB0907292 D0 GB 0907292D0 GB 0907292 A GB0907292 A GB 0907292A GB 0907292 D0 GB0907292 D0 GB 0907292D0
Authority
GB
United Kingdom
Prior art keywords
resonator
stage
filter
signal line
acoustically coupled
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.)
Granted
Application number
GBGB0907292.7A
Other versions
GB2457607A (en
GB2457607B (en
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.)
Avago Technologies International Sales Pte Ltd
Original Assignee
Avago Technologies General IP Singapore Pte 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
Priority claimed from US11/109,596 external-priority patent/US7436269B2/en
Application filed by Avago Technologies General IP Singapore Pte Ltd filed Critical Avago Technologies General IP Singapore Pte Ltd
Publication of GB0907292D0 publication Critical patent/GB0907292D0/en
Publication of GB2457607A publication Critical patent/GB2457607A/en
Application granted granted Critical
Publication of GB2457607B publication Critical patent/GB2457607B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0095—Balance-unbalance or balance-balance networks using bulk acoustic wave 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
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave 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
    • H03H9/02—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
    • H03H9/0571—Constructional combinations of supports or holders with electromechanical or other electronic elements for duplexers including bulk acoustic wave [BAW] 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
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • 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
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • H03H9/583—Multiple crystal filters implemented with thin-film techniques comprising a plurality of piezoelectric layers acoustically coupled
    • 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
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • H03H9/583—Multiple crystal filters implemented with thin-film techniques comprising a plurality of piezoelectric layers acoustically coupled
    • H03H9/584—Coupled Resonator Filters [CFR]
    • 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
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • H03H9/583—Multiple crystal filters implemented with thin-film techniques comprising a plurality of piezoelectric layers acoustically coupled
    • H03H9/585—Stacked Crystal Filters [SCF]
    • 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
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • H03H9/586—Means for mounting to a substrate, i.e. means constituting the material interface confining the waves to a volume
    • H03H9/587—Air-gaps
    • 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
    • H03H9/703—Networks using bulk acoustic wave 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
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/703—Networks using bulk acoustic wave devices
    • H03H9/706—Duplexers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
    • H03H2003/0414—Resonance frequency
    • H03H2003/0421—Modification of the thickness of an element
    • H03H2003/0428—Modification of the thickness of an element of an electrode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path

Abstract

The filter 570 includes a first two-stage resonator filter 204c connected to an input signal line and a first output signal line, said first two-stage resonator filter comprising: a first stage including a first resonator 210c and a second resonator acoustically coupled to said first resonator; a second stage including a third resonator and a fourth resonator 240c acoustically coupled to said third resonator. A decoupling layer lies between said first resonator and said second resonator, and it extends between said third resonator and said fourth resonator. A second two-stage resonator filter 204d is constructed as the first two-stage filter and is connected to the input signal line and a second output signal line. Both said first two-stage resonator and said second two-stage resonator are connected to the same input signal line. The filter 570 may act as a single-ended to balanced converter.
GB0907292A 2005-04-18 2009-04-28 Acoustically coupled resonators and method of making the same Expired - Fee Related GB2457607B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/109,596 US7436269B2 (en) 2005-04-18 2005-04-18 Acoustically coupled resonators and method of making the same
GB0604892A GB2425417B (en) 2005-04-18 2006-03-10 Acoustically coupled resonators and method of making the same

Publications (3)

Publication Number Publication Date
GB0907292D0 true GB0907292D0 (en) 2009-06-10
GB2457607A GB2457607A (en) 2009-08-26
GB2457607B GB2457607B (en) 2009-11-18

Family

ID=40909963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0907292A Expired - Fee Related GB2457607B (en) 2005-04-18 2009-04-28 Acoustically coupled resonators and method of making the same

Country Status (1)

Country Link
GB (1) GB2457607B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110445476A (en) * 2018-05-04 2019-11-12 三星电机株式会社 Filter and bulk acoustic wave resonator group including bulk acoustic wave resonator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130120082A1 (en) * 2011-11-10 2013-05-16 Qualcomm Incorporated Two-port resonators electrically coupled in parallel
EP3506502B1 (en) * 2017-12-07 2021-06-09 Infineon Technologies AG Bandpass filter using coupled acoustic resonators

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7242270B2 (en) * 2003-10-30 2007-07-10 Avago Technologies Wireless Ip (Singapore) Pte. Ltd. Decoupled stacked bulk acoustic resonator-based band-pass filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110445476A (en) * 2018-05-04 2019-11-12 三星电机株式会社 Filter and bulk acoustic wave resonator group including bulk acoustic wave resonator
CN110445476B (en) * 2018-05-04 2023-11-21 三星电机株式会社 Filter comprising a bulk acoustic wave resonator and bulk acoustic wave resonator set

Also Published As

Publication number Publication date
GB2457607A (en) 2009-08-26
GB2457607B (en) 2009-11-18

Similar Documents

Publication Publication Date Title
GB2425417B (en) Acoustically coupled resonators and method of making the same
DE502004002459D1 (en) HIGH CROSSOVER
TW200623623A (en) Filter assembly with unbalanced to balanced conversion
WO2007024958A3 (en) Noise mitigating microphone system and method
WO2006121650A3 (en) Power amplifier with an output matching network
WO2008039503A3 (en) Broadband low noise amplifier
EP1998445A3 (en) Coupled resonator filter with a filter section
TW200644410A (en) Amplifier and method for switching amplifier
DE602004005846D1 (en) AUDIO SIGNAL GENERATION
DE602006005529D1 (en) Class D amplifier
WO2008142051A3 (en) Switchable multiband lna design
WO2006115869A3 (en) System and method for dynamic impedance tuning to minimize return loss
WO2007009465A3 (en) Programmable microphone
TW200726076A (en) Switchable dual-band filter
WO2007112329A3 (en) Radiation hardened differential output buffer
WO2009055281A3 (en) Hearing aid apparatus
TW200616326A (en) Low noise and high gain low noise amplifier
MY176605A (en) Low dissipation amplifier
DE60203999D1 (en) MICROPHONE UNIT WITH INTERNAL A / D-TRANSMITTER
TW200611487A (en) Low noise amplifier and related method
WO2007108929A3 (en) Two-wire microphone circuit
EP1978638A3 (en) A negative gm circuit, a filter and low noise amplifier including such a filter
DE602005012385D1 (en) Production of integrated, acoustic thin-film resonators (FBAR) with different frequencies
EP1853089A3 (en) Method for elimination of feedback and for spectral expansion in hearing aids.
EP1898665A3 (en) Plug, sound input and output,and noise cancellation

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20100218 AND 20100224

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130725 AND 20130731

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140310