DocumentCode
386916
Title
A wide band coaxial hybrid
Author
Alford, A. ; Watts, C.
Author_Institution
Andrew Alford Consulting Engineers, Boston, MA, USA
Volume
4
fYear
1966
fDate
21-25 March 1966
Firstpage
171
Lastpage
179
Abstract
A family of coaxial transmission line bridges exhibiting hybrid characteristics is described. These bridges differ from the conventional coaxial hybrid ring in that the balance is inherently independent of frequency. The impedances can readily be compensated within 1.4 VSWR over a one octave band. Printed circuit versions have been constructed. A precisely built hybrid for rigid coaxial line has found use in the laboratory measurement of very small impedance mismatches. Reflection coefficients of the order of 0.01 in 3 1/8 inch diameter transmission line are measured with a precision of about plus or minus 0.001 in magnitude and plus or minus 5° in phase angle at 200 megacycles. Direct oscillographic display of impedance is obtained with a network incorporating several hybrids.
Keywords
Bridge circuits; Coaxial components; Distributed parameter circuits; Frequency; Impedance measurement; Laboratories; Printed circuits; Reflection; Transmission line measurements; Wideband;
fLanguage
English
Publisher
ieee
Conference_Titel
1958 IRE International Convention Record
Conference_Location
New York, NY, USA
Type
conf
DOI
10.1109/IRECON.1956.1150463
Filename
1150463
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