摘要:
In a coaxial connector, signal lines are switched over by mounting and dismounting a probe having a central contact, and fixed yoke terminals, a movable terminal, and a permanent magnet constitute a magnetic circuit. When the probe is dismounted, the contact portions are connected by the magnetic force of the permanent magnet. When the probe is mounted, the contact portions are disconnected against the magnetic force such that the central contact pushes a protrusion portion of the movable terminal.
摘要:
An antenna-integrated strip line cable with which it is possible to improve the performance of a high-frequency appliance such as a portable telephone without making the appliance larger. An antenna-integrated strip line cable 1 is made up of a transmission line part 2, an antenna part 3 and a counterpoise 4. The transmission line part 2 is made up of two conductors 21, 22 disposed in parallel, insulators 23, 24 having plasticity or flexibility disposed between these two conductors 21, 22, and a central conductor 25 disposed between the insulators 23, 24 centrally in the width direction thereof. Wide-pattern impedance matching circuits 26a, 26b are provided in the central conductor 25. The antenna part 3 has portions of the insulator 24 and the central conductor 25 extending from the transmission line part 2. The counterpoise 4 has portions of the insulator 23 and the conductor 21 extending from the transmission line part 2. The counterpoise 4 is perpendicular to the antenna part 3 and the length of the counterpoise 4 is about one-fourth of the wavelength .lambda. of the frequency used. Some benefits of this novel construction are that the number of parts is reduced, the work of connecting a coaxial cable to an antenna is made unnecessary, the counterpoise reduces directivity of the antenna part, the antenna is tough, and it is not necessary to provide an impedance matching circuit externally.
摘要:
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. An elastic center conductor terminal for electrically connecting to the center conductor of the high frequency parallel strip line cable is mounted in the dielectric case so as to extend into the connection concave, and at least one elastic earth conductor terminal for electrically connecting to at least one of the earth conductors of the high frequency parallel strip line cable is mounted in the dielectric case so as to extend into the connection concave.
摘要:
A nonreciprocal circuit device having a circuit element on a dielectric substrate providing at least part of a low-pass filter, the nonreciprocal circuit device having less interference and irregular operation caused by spurious radiation, and in addition, with reduced insertion loss. A lumped constant isolator (an example of a nonreciprocal circuit device) includes a magnet provided for applying a DC magnetic field to a magnetic assembly, which in turn has multiple intersecting central electrodes provided adjacent to a ferrite body. A dielectric substrate is disposed in between the permanent magnet and the magnetic assembly. An inductor forming part of a &pgr;-type low-pass filter is provided as an example of a circuit element on the dielectric substrate, a dielectric layer or film being disposed between the dielectric substrate and the magnet.
摘要:
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.
摘要:
The invention discloses a nonreciprocal circuit device, a composite electronic component, and a communication apparatus, which can achieve miniaturization and cost reduction while having good characteristics. In the nonreciprocal circuit device, one of a plurality of matching capacitors is connected in series between one of a plurality of central conductors and a port of the central conductor. An end of each of the remaining matching capacitors is connected in parallel to each of the remaining central conductors, and the connecting parts are continued to ports of the remaining central conductors.
摘要:
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. Furthermore, a further dielectric body composed a pair of further dielectric layers may be formed on one earth conductor with a further earth conductor formed thereon. In this case, the circuit device part is formed in the further dielectric body.
摘要:
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.
摘要:
A nonreciprocal circuit device requires less layout space when single-board capacitors are used, and meets demands for a smaller and lighter configuration. An isolator (nonreciprocal circuit device) comprises a ferrite, a permanent magnet applying a direct current magnetic field to the ferrite, a plurality of central electrodes respectively having ports disposed on the ferrite and a single-board matching capacitor with capacitor electrodes formed on both surfaces of a dielectric substrate such that the capacitor electrodes are opposed to each other and sandwich the dielectric substrate. In various embodiments, the permanent magnet and/or the ferrite has a square shape and the capacitor electrodes of the matching capacitors are arranged at an angle of 60 to 90 degrees with respect to a mounting surface and the matching capacitors are disposed so as to surround the sides of the ferrite.
摘要:
A coaxial connector ensures positive, stable contact and permits sufficiently reduced size and thickness. The coaxial receptacle (1) is equipped with: a synthetic resin insulating case (2) which has a hexahedron shape; an internal terminal (30) composed of a metallic fixed terminal (4) and a movable terminal (5) made of a flexible metal material, which are provided in a cavity or internal space (3) of the insulating case (2); a rubber elastic member (51) disposed under the movable terminal (5) in the cavity (3) of the insulating case (2); and an external terminal or outer conductor (40) provided to cover an essential section of the insulating case (2). The cavity (3) of the insulating case (2) is a vertical columnar space; and the upper side thereof has an annular opening to form an inlet (7) through which the central contact of a mating coaxial connector is introduced downward.