Abstract A waveguide circular which includes at least three waveguide H plane ports, said ports so arranged that at their junction a ferrimagnetic post is provided, one or two matching conductor or dielectric members which are provided in relation to said ferrimagnetic post, and a magnetic device which magnetizes statically said ferrimagnetic post. The characteristic features of the present invention are that the cross section of said ferrimagnetic post is inscribed with a circle the diameter of which is nearly equal to the value calculated from the dielectric resonator mode TMml (m > OR = 2), one end of said ferrimagnetic post is directly or indirectly fixed to the center of the matching members the total thickness of which is selected to be nearly equal to the height of said ferrimagnetic post and an air gap is provided between the other end of said ferrimagnetic post and the H plane of said waveguide or another matching member, and the electrical length of said air gap is adjusted so as to obtain the wide band characteristics of said waveguide circulator.
A waveguide circulator including at least three waveguide H plane ports, said ports so arranged that a ferrimagnetic post is provided at their junction, at least one matching conductor which is provided in relation to said ferrimagnetic post, and a magnetic device for statically magnetizing said ferrimagnetic post, characterized in that the cross section of said ferrimagnetic post is circumscribed within a circle having a diameter equal to the value calculated from the equation
Claim 2
Dependent Claim
74 words
A waveguide circulator including at least three waveguide H plane ports, said ports so arranged that a ferrimagnetic post is provided at their junction, at least one matching conductor which is provided in relation to said ferrimagnetic post, and a magnetic device for statically magnetizing said ferrimagnetic post, characterized in that the cross section of said ferrimagnetic post is circumscribed within a circle having a diameter equal to the value calculated from the equation
Claim 3
Dependent Claim
98 words
A waveguide circulator according to claim 1, wherein a conductor member is arranged on H planes at the center of the junction of waveguide ports, the thickness of said member is selected to be approximately equal to the height of said ferrimagnetic post, one end of said ferrimagnetic post is fixed to the center of said conductor member and an air gap is provided between the other end of said ferrimagnetic post and said H plane, and the electrical length of said air gap is adjusted so as to obtain the wide band characteristics of said waveguide circulator.
Claim 4
Dependent Claim
112 words
A waveguide circulator according to claim 1, wherein a first and second conductor member are arranged respectively on upper and lower H planes at the center of the junction of waveguide ports, the total thickness of said first and second conductor member is selected to be approximately equal to the height of said ferrimagnetic post, one end of said ferrimagnetic post is fixed to the center of said first conductor member and an air gap is provided between the other end of said ferrimagnetic post and said second conductor member, and the electrical length of said air gap is adjusted so as to obtain the wide band characteristics of said waveguide circulator.