@article{oai:kitami-it.repo.nii.ac.jp:00006294,
 author = {品田, 雄治},
 issue = {2},
 journal = {北見工業大学研究報告},
 month = {Jun},
 note = {application/pdf, On the basis of the image immittance theory of(2,2)-port，several ways of broadbanding the characteristics of the Rat Race circuit are proposed and these are roughly classified into two methods by the frequency at which the matrices of the image immittances are diagonalized ； one method is to match the terminal immittances to the image immittances at the center frequency of the transmission， and the other is at the frequencies near the center one. The latter is expected to broadband the characteristics greatly，but at the center frequency the characteristics are remained unperfectly. By use of the duplex loop hybrid circuit，this paper shows the method of matching at the center frequency and at the same time at frequencies near the center one. For this purpose it is necessary to connect the impedance converter network to the ports，and as a result the characteristics are drastically improved， but the circuit　is a little complicated.},
 pages = {385--401},
 title = {Rat Race 回路の研究（その6）　-Rat Race 回路の三峰特性-},
 volume = {3},
 year = {1972}
}