GB201116434D0 - A filter circuit - Google Patents

A filter circuit

Info

Publication number: GB201116434D0
Authority: GB; United Kingdom
Prior art keywords: filter circuit; filter; circuit
Prior art date: 2011-09-22
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.): Ceased

Application number

GBGB1116434.0A

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.)

XTRA SENSE Ltd

Original Assignee

XTRA SENSE 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.)

2011-09-22

Filing date

2011-09-22

Publication date

2011-11-02

2011-09-22 Application filed by XTRA SENSE Ltd filed Critical XTRA SENSE Ltd

2011-09-22 Priority to GBGB1116434.0A priority Critical patent/GB201116434D0/en

2011-11-02 Publication of GB201116434D0 publication Critical patent/GB201116434D0/en

2012-09-24 Priority to PCT/GB2012/000735 priority patent/WO2013041828A1/en

2012-09-24 Priority to GB1407065.0A priority patent/GB2509655B/en

Status Ceased legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1208—Frequency selective two-port networks using amplifiers with feedback comprising an electromechanical resonator
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/21—Crystal tuning forks
- H03H9/215—Crystal tuning forks consisting of quartz
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters

Landscapes

Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Chemical & Material Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

GBGB1116434.0A 2011-09-22 2011-09-22 A filter circuit Ceased GB201116434D0 (en)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
GBGB1116434.0A GB201116434D0 (en)	2011-09-22	2011-09-22	A filter circuit
PCT/GB2012/000735 WO2013041828A1 (en)	2011-09-22	2012-09-24	Filter circuit with neutralised stray capacitance of a piezo - crystal
GB1407065.0A GB2509655B (en)	2011-09-22	2012-09-24	A filter circuit

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GBGB1116434.0A GB201116434D0 (en)	2011-09-22	2011-09-22	A filter circuit

Publications (1)

Publication Number	Publication Date
GB201116434D0 true GB201116434D0 (en)	2011-11-02

Family

ID=44937725

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
GBGB1116434.0A Ceased GB201116434D0 (en)	2011-09-22	2011-09-22	A filter circuit
GB1407065.0A Active GB2509655B (en)	2011-09-22	2012-09-24	A filter circuit

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
GB1407065.0A Active GB2509655B (en)	2011-09-22	2012-09-24	A filter circuit

Country Status (2)

Country	Link
GB (2)	GB201116434D0 (en)
WO (1)	WO2013041828A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN114124028B (en) *	2021-11-24	2025-12-30	中国南方电网有限责任公司超高压输电公司贵阳局	Combining filter circuits and filter equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE280581C (en) *	1913-08-05	1914-11-24	Gustav Huguenin	AIR CLEANER IN WHICH THE AIRFLOW IS DIVIDED INTO SEVERAL BRANCHES ON ZIGZAG-SHAPED PATHS ON DAMP WALLS
US3946328A (en) *	1975-01-27	1976-03-23	Northern Electric Company, Limited	Functionally tunable active filter
JPS51138363A (en)	1975-05-26	1976-11-29	Noto Denshi Kogyo Kk	Band-pass filter using a piezoelectric tunig furk
CH617297A5 (en)	1977-09-30	1980-05-14	Straumann Inst Ag	Electromechanical oscillator, particularly for a band-pass filter of a remote control device
DE2808581C2 (en) *	1978-02-28	1988-05-05	Siemens AG, 1000 Berlin und 8000 München	Filter circuit with a bandpass transfer function of the fourth degree
GB2433367B (en) *	2005-12-03	2010-11-10	Peter John Jones	Filter using tuning fork crystals

2011
- 2011-09-22 GB GBGB1116434.0A patent/GB201116434D0/en not_active Ceased
2012
- 2012-09-24 WO PCT/GB2012/000735 patent/WO2013041828A1/en not_active Ceased
- 2012-09-24 GB GB1407065.0A patent/GB2509655B/en active Active

Also Published As

Publication number	Publication date
GB2509655B (en)	2018-04-25
WO2013041828A1 (en)	2013-03-28
GB2509655A (en)	2014-07-09
GB201407065D0 (en)	2014-06-04
WO2013041828A4 (en)	2013-05-23

Publication	Publication Date	Title
GB201117480D0 (en)	2011-11-23	Filter
ZA201307111B (en)	2018-12-19	Multi-metric filtering
GB2490543B (en)	2013-06-12	Filter arrangement
GB201109388D0 (en)	2011-07-20	Filter assembly
IL231188A0 (en)	2014-04-30	Filter element
PL3415213T3 (en)	2021-06-14	Filter element
GB2493281B (en)	2016-06-15	A footgauge
PL2705886T3 (en)	2021-12-20	Filter mechanism
EP2668528A4 (en)	2014-06-25	Filter
EP2861108A4 (en)	2016-03-23	A strainer
GB2489919B (en)	2018-02-14	Filter
GB201106760D0 (en)	2011-06-01	A case
GB2507776B (en)	2014-12-10	Filter circuit
GB201211583D0 (en)	2012-08-15	Filter unit
GB2509655B (en)	2018-04-25	A filter circuit
GB2497333B (en)	2014-07-30	A crossover filter
GB201100846D0 (en)	2011-03-02	Filter
GB2491460B (en)	2017-09-06	A microwave filter
GB201111729D0 (en)	2011-08-24	A microwavew filter
GB2493421B (en)	2013-06-26	Filter
GB201109196D0 (en)	2011-07-13	A microwave filter
AU343010S (en)	2012-06-20	Filter
ZA201201500B (en)	2012-10-31	Filter
GB201111951D0 (en)	2011-08-24	Filter
IL227994A0 (en)	2013-09-30	Multi-metric filtering

Legal Events

Date	Code	Title	Description
2012-10-31	AT	Applications terminated before publication under section 16(1)