GB1379620A - Wideband cirection filter device - Google Patents

Wideband cirection filter device

Info

Publication number
GB1379620A
GB1379620A GB5892372A GB5892372A GB1379620A GB 1379620 A GB1379620 A GB 1379620A GB 5892372 A GB5892372 A GB 5892372A GB 5892372 A GB5892372 A GB 5892372A GB 1379620 A GB1379620 A GB 1379620A
Authority
GB
United Kingdom
Prior art keywords
slits
components
cavities
coupling
waveguide
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
Application number
GB5892372A
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.)
Hitachi Electronics Ltd
Hitachi Denshi KK
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Electronics Ltd
Hitachi Denshi KK
Nippon Telegraph and Telephone 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.)
Filing date
Publication date
Application filed by Hitachi Electronics Ltd, Hitachi Denshi KK, Nippon Telegraph and Telephone Corp filed Critical Hitachi Electronics Ltd
Publication of GB1379620A publication Critical patent/GB1379620A/en
Expired legal-status Critical Current

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
    • H01P1/213—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

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1379620 Cavity resonator filters NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP and HITACHI ELECTRONICS CO Ltd 20 Dec 1972 [24 Dec1971] 58923/72 Heading H1W A filter for removing selected components from a composite signal travelling along a semicircular waveguide 34 comprises two coplanar ring-shaped cavity resonators 35 and 36 which are divided into two portions coupled by holes 37, 38 spaced a quarter wavelength apart and the circumferences of the cavities are respectively integral multiples of the wavelength of two components f 1 , f 2 of the composite signal. The cavities are directionally coupled to waveguide 34 by slits 45, 46 and to two rectangular waveguides 40, 41 by slits 42, 43, the components f 1 and f 2 being taken as outputs from the rectangular waveguides. Similar filters can be disposed along the semi-circular waveguide 34 to remove other pairs of components therefrom. In Fig. 7 (not shown) the rectangular guides are disposed along the outer limbs of the ring shaped cavities. In Fig. 8 (not shown) the coupling slits are replaced by coupling guides (451, 461, 421, 431) which are arranged in a similar manner to the slits but are through a plate a quarter wavelength thick. In addition to coupling slits, further slits for impedance matching can be provided.
GB5892372A 1971-12-24 1972-12-20 Wideband cirection filter device Expired GB1379620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46104658A JPS5146365B2 (en) 1971-12-24 1971-12-24

Publications (1)

Publication Number Publication Date
GB1379620A true GB1379620A (en) 1975-01-02

Family

ID=14386548

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5892372A Expired GB1379620A (en) 1971-12-24 1972-12-20 Wideband cirection filter device

Country Status (5)

Country Link
US (1) US3803519A (en)
JP (1) JPS5146365B2 (en)
DE (1) DE2263151C3 (en)
FR (1) FR2164902B1 (en)
GB (1) GB1379620A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363912A2 (en) * 1975-09-24 1978-03-31 Cit Alcatel RF waveguide coupler - includes parallel semicircular and rectangular waveguides connected by line of bore holes through dividing wall
KR100223375B1 (en) * 1997-06-11 1999-10-15 윤종용 Apparatus and method for automatically contwlling gain in multic-channel communication system
US7994868B2 (en) * 2005-12-30 2011-08-09 The Invention Science Fund I, Llc Photonic diode

Also Published As

Publication number Publication date
FR2164902A1 (en) 1973-08-03
DE2263151A1 (en) 1973-07-05
US3803519A (en) 1974-04-09
JPS4871164A (en) 1973-09-26
DE2263151C3 (en) 1975-09-18
DE2263151B2 (en) 1975-01-30
FR2164902B1 (en) 1977-07-22
JPS5146365B2 (en) 1976-12-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee