A stub tuner includes a first conductor, and a rod-shaped conductor shaft. The first conductor is inserted into a tube axial direction inner side from an opening in a waveguide tube transmitting high frequency waves. The first conductor includes a plate-shaped first shape extending in a direction intersecting a tube axial direction, inside the waveguide tube, and a plate-shaped second shape extending from the outer end in the tube radial direction of the first shape toward the tube axial direction outer side in the tube axial direction. An outer circumferential surface of the second shape is separated from an inner surface of the waveguide tube. An electrical length of the outer circumferential surface in the tube axial direction is ¼ of a wavelength of the high-frequency waves. The conductor shaft is electrically connected to the waveguide tube, supports the first conductor, and extends in the tube axial direction.

A stub tuner includes a first conductor, and a rod-shaped conductor shaft. The first conductor is inserted into a tube axial direction inner side from an opening in a waveguide tube transmitting high frequency waves. The first conductor includes a plate-shaped first shape extending in a direction intersecting a tube axial direction, inside the waveguide tube, and a plate-shaped second shape extending from the outer end in the tube radial direction of the first shape toward the tube axial direction outer side in the tube axial direction. An outer circumferential surface of the second shape is separated from an inner surface of the waveguide tube. An electrical length of the outer circumferential surface in the tube axial direction is ¼ of a wavelength of the high-frequency waves. The conductor shaft is electrically connected to the waveguide tube, supports the first conductor, and extends in the tube axial direction.

Aspects of the subject disclosure may include, for example, a coupling device includes a circuit that receives a signal. At least one passive electrical circuit element generates an electromagnetic field in response to the signal. A portion of the electromagnetic field is guided by a surface of a transmission medium to propagate as a guided electromagnetic wave longitudinally along the transmission medium. Other embodiments are disclosed.

A terminal antenna structure, the antenna structure includes: a dielectric plate, a metal plate, a coplanar waveguide (CPW) feeding strip, and a feeding point, where the metal plate covers a dielectric plate; the CPW feeding strip and the feeding point are disposed on the dielectric plate; the feeding point is disposed at one end of the feeding strip, and the feeding point is connected to the metal plate to implement feed connection between the CPW feeding strip and the metal plate; a hole is opened on the metal plate, and the hole includes a first part and a second part on one side of the first part close to the center of the metal plate or on two sides of the first part.

A terminal antenna structure, the antenna structure includes: a dielectric plate, a metal plate, a coplanar waveguide (CPW) feeding strip, and a feeding point, where the metal plate covers a dielectric plate; the CPW feeding strip and the feeding point are disposed on the dielectric plate; the feeding point is disposed at one end of the feeding strip, and the feeding point is connected to the metal plate to implement feed connection between the CPW feeding strip and the metal plate; a hole is opened on the metal plate, and the hole includes a first part and a second part on one side of the first part close to the center of the metal plate or on two sides of the first part.

Radiofrequency and other electronic devices can be formed from textured hexaferrite materials, such as Z-phase barium cobalt ferrite Ba.sub.3Co.sub.2Fe.sub.24O.sub.41 (Co.sub.2Z) having enhanced resonant frequency. The textured hexaferrite material can be formed by sintering fine grain hexaferrite powder at a lower temperature than conventional firing temperatures to inhibit reduction of iron. The textured hexaferrite material can be used in radiofrequency devices such as circulators or telecommunications systems.

A slide screw tuner uses a tuning probe that penetrates into the slot of the slabline inclined towards the test port, in order to compensate for the capacitive skewing of the angle of the reflection factor Γ. This anti-skewing effect is done by splitting the mobile combo carriage into a fixed and a rotating section, held together by a center pin that allows an adjustable inclination. The linearized trajectory of Γ improves the accuracy of interpolation between calibration points.

A slide screw tuner uses a tuning probe that penetrates into the slot of the slabline inclined towards the test port, in order to compensate for the capacitive skewing of the angle of the reflection factor Γ. This anti-skewing effect is done by splitting the mobile combo carriage into a fixed and a rotating section, held together by a center pin that allows an adjustable inclination. The linearized trajectory of Γ improves the accuracy of interpolation between calibration points.

An electronic device and a method for reducing power consumption of signal transmission in the electronic device are provided. The electronic device may include a source circuit, a destination circuit, at least one transmission wire and at least one resonance wire, wherein the at least one transmission wire is coupled between at least one output terminal of the source circuit and at least one input terminal of the destination circuit, and the at least one resonance wire is coupled to the at least one input terminal of the destination circuit and is routed along the at least one transmission wire. In specific, the source circuit is configured to output an oscillation signal having an oscillation frequency, the destination circuit is configured to receive the oscillation signal, wherein the at least one transmission wire is configured to transmit the oscillation signal from the source circuit to the destination circuit.

An electronic device and a method for reducing power consumption of signal transmission in the electronic device are provided. The electronic device may include a source circuit, a destination circuit, at least one transmission wire and at least one resonance wire, wherein the at least one transmission wire is coupled between at least one output terminal of the source circuit and at least one input terminal of the destination circuit, and the at least one resonance wire is coupled to the at least one input terminal of the destination circuit and is routed along the at least one transmission wire. In specific, the source circuit is configured to output an oscillation signal having an oscillation frequency, the destination circuit is configured to receive the oscillation signal, wherein the at least one transmission wire is configured to transmit the oscillation signal from the source circuit to the destination circuit.