Title :
A branch-line-type eight-port comparator circuit
Author :
Kawai, T. ; Iio, K. ; Ohta, I. ; Kaneko, T.
Author_Institution :
Fac. of Eng., Himeji Inst. of Technol., Japan
Abstract :
A method of constructing an eight-port comparator with four branch-line 3 dB quadrature hybrids is described theoretically and experimentally. A relative bandwidth of up to 20% (for return loss and isolation better than 20 dB) is obtained by addition of simple external circuits. A strong point of the present comparator is that it is manufactured on the same face of a substrate using a planar transmission line such as a stripline or a microstrip line.<>
Keywords :
S-parameters; comparators (circuits); multiport networks; strip lines; waveguide couplers; S-parameters; branch-line-type eight-port comparator circuit; isolation; microstrip line; planar transmission line; quadrature hybrids; relative bandwidth; return loss; stripline; Admittance; Bandwidth; Circuits; Couplers; Frequency; Isolation technology; Manufacturing; Microstrip; Planar transmission lines; Scattering parameters;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147145
