Nonreciprocal transmission line apparatus whose propagation constants in forward and backward directions are different from each other
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United States of America Patent
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Nov 8, 2016
Grant Date -
Jan 7, 2016
app pub date -
Feb 25, 2014
filing date -
Mar 4, 2013
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Abstract
When a phase constant in a first mode of propagation in the forward direction is βp, and a phase constant in a second mode of propagation in the backward direction is βm, respective first and second electrical lengths of stub conductors are set so that a function of nonreciprocal phase shift amount βNR=(βp−βm)/2 with respect to an operating angular frequency comes close to a function βNRZ with respect to an operating angular frequency, when beam squint of such a phenomenon that a radiation direction of electromagnetic waves radiated from a nonreciprocal transmission line apparatus changes in accordance with frequency does not occur in the vicinity of an intersection of a dispersion curve representing a relation between the phase constant βp and the operating angular frequency and a dispersion curve representing a relation between the phase constant βm and the operating angular frequency.
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