Abstract: In a multi-plate high frequency parallel strip-line cable including a strip-shaped dielectric body made of either an electrical insulating material having a flexibility or another electrical insulating material having a plasticity, the dielectric body is composed of a pair of dielectric layers. A pair of thin-film-shaped earth conductors is formed on both surfaces of the dielectric body so as to oppose to each other, and a thin-film-shaped center conductor is formed between the pair of dielectric layers in the dielectric body so as to be located between a pair of earth conductors. Further, a circuit device part such as an impedance adjusting circuit, a filter, an attenuator or the like is formed between a pair of dielectric layers in the dielectric body so as to be electrically connected with the center conductor, thereby the parallel strip-line cable having either a flexibility or a plasticity.

Abstract: A signal-to-noise enhancer 10 includes a first 90 degree hybrid set 20. A first output end of the first 90 degree hybrid set 20 is connected to an input end of a limiter used a magnetostatic wave element 62a utilized the magnetostatic surface wave mode. Also, a second output end of the first 90 degree hybrid set 20 is connected to an input end of a filter used a magnetostatic wave element 62b similar to the magnetostatic wave element 62a in structure, via a resistor 32 as a first attenuator. Furthermore, an output end of the limiter is connected to a first input end of a second 90 degree hybrid set 40 via a resistor 52 as a second attenuator. Also, an output end of the filter is connected to a second input end of the second 90 degree hybrid set 40.

Abstract: In a high frequency parallel strip line cable including a pair of thin-film-shaped earth conductors formed on both surfaces of a dielectric body so as to oppose to each other, a thin-film-shaped center conductor is formed in the dielectric body so as to be located between the pair of earth conductors, and the connector part is formed in one end of the high frequency parallel strip line cable so as to expose one end of the center conductor. Further, a connector is provided for connecting with the connector part of the high frequency parallel strip line cable. In the connector, a connection concave for inserting the connector part is formed in a dielectric case.

Abstract: A magnetostatic wave resonator includes a YIG thin film. On one main surface of the YIG thin film, three circular conductors having different radii are disposed on concentric circles whose centers are the center of the YIG thin film. Furthermore, on the YIG thin film, two transducers are disposed so as to intersect with each other at right angles at the center of the YIG thin film and to connect magnetically to the YIG thin film.

Abstract: The magnetostatic wave device 10 includes a holder 12 made of synthetic resin. The holder 12 is provided with a number of recesses 14, 16, 22a, 22b, 24a and 24b. In the holder 12, a magnet 30 is housed in the recess 14, and a YIG element 32 as a ferromagnetic element is housed in the recess 16, and transducers 34a and 34b are housed in the recesses 22a, 22b, 24a and 24b.

Abstract: A non-reciprocal circuit element which includes a case, a circuit element main body provided in the case including central conductors disposed to intersect each other in an electrically insulated state and matching circuitry, and ferrite members disposed to confront the central conductors so as to impress a d.c. magnetic field. The case is made of an insulative resin, and covered by electrode films formed to constitute at least part of the circuit element main body and terminals for the central conductors.

Abstract: A nonreciprocal circuit element including a ferrite assembly which ha a pair of ferrite members and a plurality of central conductors interposed between the ferrite members, and a dielectric substrate which has an earthing electrode formed on one of its faces and a plurality of impedance matching electrodes formed on the other face, and wherein a direct current magnetic field is applied to the ferrite members. The ferrite assembly and the dielectric substrate are stacked such that lead-out portions of the central conductors are, respectively, connected to the impedance matching electrodes, while earthing portions of the central conductors and the earthing electrode are grounded.