GB866320A - Improvements in or relating to electrical apparatus for providing a measure of the standing wave ratio in an electro-magnetic wave transmission means - Google Patents

Improvements in or relating to electrical apparatus for providing a measure of the standing wave ratio in an electro-magnetic wave transmission means

Info

Publication number
GB866320A
GB866320A GB2544456A GB2544456A GB866320A GB 866320 A GB866320 A GB 866320A GB 2544456 A GB2544456 A GB 2544456A GB 2544456 A GB2544456 A GB 2544456A GB 866320 A GB866320 A GB 866320A
Authority
GB
United Kingdom
Prior art keywords
wave
guide
signal
amplitude
oscillator
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
GB2544456A
Inventor
John Austin Thomason
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2544456A priority Critical patent/GB866320A/en
Publication of GB866320A publication Critical patent/GB866320A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio

Abstract

866,320. Current and voltage measurements. GENERAL ELECTRIC CO. Ltd. Nov. 8, 1957 (Aug. 20, 1956], No. 25444/56. Class 37. Apparatus to determine the standing wave ratio in electromagnetic transmission means 3 comprises: first means 9 for deriving a signal dependent in amplitude upon an incident wave propagated along the transmission means; second means 10 for deriving a signal dependent in amplitude upon the reflected portion of the incident wave; and third means 13 which is set to bring the amplitude of one signal into a given relationship with that of the other, whereby the setting of the third means provides the required measure of the standing wave ratio. Klystron oscillator 2, modulated by a 3 kc/s. square wave frequency, is coupled to waveguide 3, wave-guide 4 which is under test, wave-guide 5 and matched load 6; the characteristics of wave-guides 3 and 5, and of matched load 6 being such that standing waves produced in wave-guide 3 depend solely upon the reflection characteristics of wave-guide 4. Direc. tional couplers 9, 10 each comprising two arms, one of which is terminated by a matched load 11, 12, are selectively coupled by wave-guide switch 14 to a coaxial cable 16; and the resulting signal, demodulated by rectifier 17, is selectively amplified at 18 and fed to meter 19. The coupler 9 derives a signal from that transmitted by oscillator 2; the coupler 10 derives a signal from that reflected by wave-guide 4; and these signals are equalized in amplitude by appropriately setting attenuator 13; equality being indicated by identical readings of meter 19 for either position of the switch 14; and the required setting providing a measure of the standing wave ratio in wave-guide 3. The frequency of oscillator 2 is adjustable and is measured by cavity wavemeter 8; and attenuator 7 enables the energy output of the oscillator to be varied. Specification 866,321 is referred to.
GB2544456A 1956-08-20 1956-08-20 Improvements in or relating to electrical apparatus for providing a measure of the standing wave ratio in an electro-magnetic wave transmission means Expired GB866320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2544456A GB866320A (en) 1956-08-20 1956-08-20 Improvements in or relating to electrical apparatus for providing a measure of the standing wave ratio in an electro-magnetic wave transmission means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2544456A GB866320A (en) 1956-08-20 1956-08-20 Improvements in or relating to electrical apparatus for providing a measure of the standing wave ratio in an electro-magnetic wave transmission means

Publications (1)

Publication Number Publication Date
GB866320A true GB866320A (en) 1961-04-26

Family

ID=10227771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2544456A Expired GB866320A (en) 1956-08-20 1956-08-20 Improvements in or relating to electrical apparatus for providing a measure of the standing wave ratio in an electro-magnetic wave transmission means

Country Status (1)

Country Link
GB (1) GB866320A (en)

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