US3611213A - Microwave filter - Google Patents

Microwave filter Download PDF

Info

Publication number: US3611213A
Authority: US; United States
Prior art keywords: waveguide; channel; filter; length; bifurcation
Prior art date: 1969-03-07
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

US886688A

Other languages

English (en)

Inventor

George Frederick Craven

Richard Finnie Skedd

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.)

STC PLC

Original Assignee

International Standard Electric Corp

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.)

1969-03-07

Filing date

1969-12-19

Publication date

1971-10-05

1969-12-19 Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp

1971-10-05 Application granted granted Critical

1971-10-05 Publication of US3611213A publication Critical patent/US3611213A/en

1987-05-28 Assigned to STC PLC reassignment STC PLC ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.

1988-10-05 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000005291 magnetic effect Effects 0.000 claims abstract description 15
229910000859 α-Fe Inorganic materials 0.000 claims abstract description 9
230000008878 coupling Effects 0.000 claims description 7
238000010168 coupling process Methods 0.000 claims description 7
238000005859 coupling reaction Methods 0.000 claims description 7
239000002902 ferrimagnetic material Substances 0.000 claims description 7
230000001965 increasing effect Effects 0.000 claims description 6
230000010363 phase shift Effects 0.000 abstract description 8
230000004048 modification Effects 0.000 abstract description 2
238000012986 modification Methods 0.000 abstract description 2
230000001902 propagating effect Effects 0.000 description 5
230000008859 change Effects 0.000 description 4
230000005540 biological transmission Effects 0.000 description 3
230000005293 ferrimagnetic effect Effects 0.000 description 3
241000557626 Corvus corax Species 0.000 description 1
241001117170 Euplectes Species 0.000 description 1
230000004075 alteration Effects 0.000 description 1
239000002223 garnet Substances 0.000 description 1
230000001939 inductive effect Effects 0.000 description 1
238000003780 insertion Methods 0.000 description 1
230000037431 insertion Effects 0.000 description 1
238000002955 isolation Methods 0.000 description 1
239000002184 metal Substances 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
230000035699 permeability Effects 0.000 description 1
230000000750 progressive effect Effects 0.000 description 1
230000000644 propagated effect Effects 0.000 description 1
229910052709 silver Inorganic materials 0.000 description 1
230000008719 thickening Effects 0.000 description 1
230000007704 transition Effects 0.000 description 1

Images

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
- H01P1/219—Evanescent mode filters

Definitions

An object of the invention is to provide a type of rejection filter which is simple, compact and tunable.
each tuning screw 7 is located at the center of a section of length l of the reduced height waveguide 3, the reduced height waveguide therefore having a length of 2! and containing two such sections, each with its tuning screw 7.

Landscapes

Control Of Motors That Do Not Use Commutators (AREA)

US886688A 1969-03-07 1969-12-19 Microwave filter Expired - Lifetime US3611213A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB02220/69A GB1189974A (en)	1969-03-07	1969-03-07	Improvements in Electrical Waveguide Arrangements

Publications (1)

Publication Number	Publication Date
US3611213A true US3611213A (en)	1971-10-05

Family

ID=10000562

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US886688A Expired - Lifetime US3611213A (en)	1969-03-07	1969-12-19	Microwave filter

Country Status (6)

Country	Link
US (1)	US3611213A (fr)
BE (1)	BE759706A (fr)
CH (1)	CH509674A (fr)
DE (1)	DE2008583A1 (fr)
FR (1)	FR2034733B1 (fr)
GB (1)	GB1189974A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3851282A (en) *	1972-11-11	1974-11-26	Marconi Co Ltd	Waveguide filters

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2594037A (en) *	1946-08-28	1952-04-22	Rca Corp	Ultrahigh-frequency filter
US2849683A (en) *	1953-07-31	1958-08-26	Bell Telephone Labor Inc	Non-reciprocal wave transmission
US2866949A (en) *	1953-10-29	1958-12-30	Bell Telephone Labor Inc	Microwave circulators, isolators, and branching filters
US2989709A (en) *	1955-09-16	1961-06-20	Bell Telephone Labor Inc	Magnetically controlled wave guide switch
US3496498A (en) *	1965-08-11	1970-02-17	Nippon Electric Co	High-frequency filter

0
- BE BE759706D patent/BE759706A/fr unknown
1969
- 1969-03-07 GB GB02220/69A patent/GB1189974A/en not_active Expired
- 1969-12-19 US US886688A patent/US3611213A/en not_active Expired - Lifetime
1970
- 1970-02-24 DE DE19702008583 patent/DE2008583A1/de active Pending
- 1970-03-04 CH CH314670A patent/CH509674A/de not_active IP Right Cessation
- 1970-03-06 FR FR7008095A patent/FR2034733B1/fr not_active Expired

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2594037A (en) *	1946-08-28	1952-04-22	Rca Corp	Ultrahigh-frequency filter
US2849683A (en) *	1953-07-31	1958-08-26	Bell Telephone Labor Inc	Non-reciprocal wave transmission
US2866949A (en) *	1953-10-29	1958-12-30	Bell Telephone Labor Inc	Microwave circulators, isolators, and branching filters
US2989709A (en) *	1955-09-16	1961-06-20	Bell Telephone Labor Inc	Magnetically controlled wave guide switch
US3496498A (en) *	1965-08-11	1970-02-17	Nippon Electric Co	High-frequency filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3851282A (en) *	1972-11-11	1974-11-26	Marconi Co Ltd	Waveguide filters

Also Published As

Publication number	Publication date
DE2008583A1 (de)	1971-02-18
FR2034733B1 (fr)	1974-09-06
CH509674A (de)	1971-06-30
GB1189974A (en)	1970-04-29
FR2034733A1 (fr)	1970-12-11
BE759706A (fr)	1971-06-02

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Legal Events

Date

Code

Title

Description

1987-05-28

AS

Assignment

Owner name: STC PLC,ENGLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.;REEL/FRAME:004761/0721

Effective date: 19870423

Owner name: STC PLC, 10 MALTRAVERS STREET, LONDON, WC2R 3HA, E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.;REEL/FRAME:004761/0721

Effective date: 19870423