GB2188789B - Radio frequency filter - Google Patents

Radio frequency filter

Info

Publication number
GB2188789B
GB2188789B GB8708295A GB8708295A GB2188789B GB 2188789 B GB2188789 B GB 2188789B GB 8708295 A GB8708295 A GB 8708295A GB 8708295 A GB8708295 A GB 8708295A GB 2188789 B GB2188789 B GB 2188789B
Authority
GB
United Kingdom
Prior art keywords
radio frequency
frequency filter
filter
radio
frequency
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 - Lifetime
Application number
GB8708295A
Other versions
GB8708295D0 (en
GB2188789A (en
Inventor
Theodore F Longshore
Ronald J Wanat
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 US06/849,099 external-priority patent/US4667172A/en
Priority claimed from US06/849,098 external-priority patent/US4646038A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of GB8708295D0 publication Critical patent/GB8708295D0/en
Publication of GB2188789A publication Critical patent/GB2188789A/en
Application granted granted Critical
Publication of GB2188789B publication Critical patent/GB2188789B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators
    • 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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
GB8708295A 1986-04-07 1987-04-07 Radio frequency filter Expired - Lifetime GB2188789B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/849,099 US4667172A (en) 1986-04-07 1986-04-07 Ceramic transmitter combiner with variable electrical length tuning stub and coupling loop interface
US06/849,098 US4646038A (en) 1986-04-07 1986-04-07 Ceramic resonator filter with electromagnetic shielding

Publications (3)

Publication Number Publication Date
GB8708295D0 GB8708295D0 (en) 1987-05-13
GB2188789A GB2188789A (en) 1987-10-07
GB2188789B true GB2188789B (en) 1990-08-01

Family

ID=27126815

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8708295A Expired - Lifetime GB2188789B (en) 1986-04-07 1987-04-07 Radio frequency filter
GB8924695A Expired - Lifetime GB2223361B (en) 1986-04-07 1989-11-02 Radio frequency combiner

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8924695A Expired - Lifetime GB2223361B (en) 1986-04-07 1989-11-02 Radio frequency combiner

Country Status (3)

Country Link
FR (2) FR2606936B1 (en)
GB (2) GB2188789B (en)
HK (2) HK16594A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4902991A (en) * 1987-03-12 1990-02-20 Murata Manufacturing Co., Ltd. Radio frequency signal combining/sorting device
JPH0728168B2 (en) * 1988-08-24 1995-03-29 株式会社村田製作所 Dielectric resonator
GB9002120D0 (en) * 1990-01-31 1990-03-28 Marconi Co Ltd Dielectric resonant oscillator
DE4024480A1 (en) * 1990-08-02 1992-02-06 Ant Nachrichtentech Frequency switching device using parallel filters - has inductance in coupling line section between common supply line and each filter
JP3135628B2 (en) * 1991-09-12 2001-02-19 株式会社日本コンラックス Banknote recognition device
GB2292484B (en) * 1994-08-17 1997-09-17 Continental Microwave Technolo Microwave transmit/receive assembly
CN1581569A (en) * 2003-08-04 2005-02-16 松下电器产业株式会社 Dielectric resonator, dielectric filter, and method of supporting dielectric resonance element

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866166A (en) * 1955-04-08 1958-12-23 Gen Precision Lab Inc Microwave power divider
FR1413073A (en) * 1964-01-22 1965-10-08 Portenseigne Ets Marcel Improvements to wireless energy distributors
DE1936543C3 (en) * 1969-07-18 1975-05-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Device for continuously changing the runtime behavior of the runtime equalization elements used for message transmission
US3882396A (en) * 1973-08-10 1975-05-06 Bell Telephone Labor Inc Impedance-matched waveguide frequency converter integrally mounted on stripline
US4375622A (en) * 1981-04-20 1983-03-01 Motorola, Inc. Multiport radio frequency signal combiner
JPS59198003A (en) * 1983-04-26 1984-11-09 Nec Corp Resonance circuit using dielectric resonator

Also Published As

Publication number Publication date
GB2223361B (en) 1990-08-01
FR2606936B1 (en) 1991-07-19
FR2618608A1 (en) 1989-01-27
FR2606936A1 (en) 1988-05-20
HK16494A (en) 1994-03-11
GB8924695D0 (en) 1989-12-20
GB8708295D0 (en) 1987-05-13
GB2188789A (en) 1987-10-07
HK16594A (en) 1994-03-11
GB2223361A (en) 1990-04-04

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Legal Events

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

Effective date: 20010407