GB761869A - Wideband microwave attenuator - Google Patents

Wideband microwave attenuator

Info

Publication number
GB761869A
GB761869A GB22496/53A GB2249653A GB761869A GB 761869 A GB761869 A GB 761869A GB 22496/53 A GB22496/53 A GB 22496/53A GB 2249653 A GB2249653 A GB 2249653A GB 761869 A GB761869 A GB 761869A
Authority
GB
United Kingdom
Prior art keywords
envelope
length
anode
cathode
gas
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
GB22496/53A
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
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB761869A publication Critical patent/GB761869A/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
    • H01P1/22—Attenuating devices
    • H01P1/222—Waveguide attenuators

Abstract

761,869. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. Aug. 14, 1953 [Sept. 4, 1952], No. 22496/53. Class 39(1). A wideband microwave attenuator comprises a length of rectangular waveguide 2, a gas discharge device having an envelope 3 extending along and substantially internally of a major portion of the waveguide, a reservoir 10 of a light gas having high ionisation potential and high breakdown power and an anode 5 and cathode 6, the gas pressure being such that the mean free path of the electrons is of the order of the cross-sectional dimensions of the envelope while the ratio of the surface area to the free volume of the envelope within the wave-guide, the unit of length being the inch, is greater than 50: 1, preferably approximately 70: 1, and means for connecting a source 4 of ionising potential between the anode and cathode. The envelope 3 can be of rectangular cross-section, and can be tapered at 7, 8 to reduce reflections of the R.F. signal applied to the attenuator. In the construction shown in Fig. 2 the envelope comprises two lengths 11a, 11b of rectangular cross-section joined at one end by a capillary tube 11c connected to the gas reservoir, each length of envelope having a side tube near the other end leading to the cathode or anode. In the construction shown in Fig. 3 the envelope 17 is of cylindrical cross-section and contains a pair of strips 21, 22 of insulating material such as mica to increase the ratio of surface area to free volume of the envelope. In the constructions shown in Figs. 4 and 5 the envelope comprises a length of capillary tubing 23, 27 folded so that the discharge traverses the major length of the wave guide at least twice. Fillings can be helium or hydrogen at a pressure of approximately 1 mm.
GB22496/53A 1952-09-04 1953-08-14 Wideband microwave attenuator Expired GB761869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US761869XA 1952-09-04 1952-09-04

Publications (1)

Publication Number Publication Date
GB761869A true GB761869A (en) 1956-11-21

Family

ID=22130470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22496/53A Expired GB761869A (en) 1952-09-04 1953-08-14 Wideband microwave attenuator

Country Status (2)

Country Link
BE (1) BE523620A (en)
GB (1) GB761869A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701058A (en) * 1971-06-03 1972-10-24 Bob L Smith Fluidic phase shifter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701058A (en) * 1971-06-03 1972-10-24 Bob L Smith Fluidic phase shifter

Also Published As

Publication number Publication date
BE523620A (en)

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