Tdk Corporation

Other

Asahi Kasei Engineering Corporation

Osamu Yoshie

Tatsuya Fukunaga

Masaaki Togashi

Masaaki Ikeda

Kiyoshi Hatanaka

Nobuyoshi Sato

Hideya Matsubara

Atsunori Okada

Yuichi Kimura

Toshinori Matsuura

Toshiyuki Abe

Sadaharu Yoneda

Steve Plager

Ryota Kajiki

Yuji Nishimura

Shinichiroh Toda

Fuminori Kiyota

Kazuhiro Nojiri

An antenna includes a dielectric, first and second antenna electrodes each having an annular shape, and a probe electrode. The dielectric has first to third planes parallel to each other in a stacking direction. The first and second antenna electrodes are respectively disposed on the first and second planes. The second antenna electrode is different in size from the first antenna electrode and disposed inward from the outer periphery of the first antenna electrode. The probe electrode is disposed on the third plane and overlaps the first and second antenna electrodes in plan view along the stacking direction. The first and second antenna electrodes are electrically powered via the probe electrode. The probe electrode is remote from the first antenna electrode by a first distance and remote from the second antenna electrode by a second distance different from the first distance along the stacking direction.

Antenna

An antenna includes a dielectric, first to fourth antenna electrodes, and at least one probe electrode. The dielectric has first to fifth planes stacked parallel to each other in a stacking direction. The first to the fourth antenna electrodes each have an annular shape. The first antenna electrode is disposed on the first plane. The second antenna electrode is different in size from the first antenna electrode and disposed on the second plane. The third antenna electrode is disposed on the third plane. The fourth antenna electrode is different in size from the third antenna electrode and disposed on the fourth plane. The probe electrode is disposed on the fifth plane and overlaps one or both of the first and third antenna electrodes and one or both of the second and fourth antenna electrodes when seen in plan view along the stacking direction.

A substrate module includes capacitors, a first coupling conductor, and a mounting substrate. The first coupling conductor couples two of the capacitors together. The mounting substrate includes a first power supply layer and a second power supply layer. The capacitors each include a first electrode, a second electrode, a first terminal conductor, a second terminal conductor, and a third terminal conductor. The first terminal conductor is coupled to the first electrode and to the first power supply layer. The second terminal conductor is coupled to the second electrode and to the second power supply layer. The third terminal conductor is coupled to the first coupling conductor. The third terminal conductor is coupled to the first electrode at a coupling position that is different from a coupling position of the first terminal conductor.

Capacitor and substrate module

A signal transmission device includes substrates and resonance sections resonating at the predetermined resonance frequency. At least one of the substrates is formed with two or more resonators in the second direction, and the remaining one or two or more of the substrates are each formed with one or more resonators in the second direction, and at least one of the resonance sections is configured by a plurality of resonators opposing one another in the first direction between the substrates, the opposing resonators form a coupled resonator resonating as a whole at the predetermined resonance frequency through electromagnetic coupling in a hybrid resonance mode, and in a state that the substrates are separated away from one another to fail to establish electromagnetic coupling thereamong, the resonators forming the coupled resonator resonate at any other resonance frequency different from the predetermined resonance frequency on the substrate basis.

Signal transmission device, filter, and inter-substrate communication device

An antenna includes: a first resonator and a second resonator each having an open end, in which the first resonator and the second resonator are disposed side by side to allow the open ends thereof to be opposed to each other; and a first capacitor connected between the open ends which are opposed to each other.

Antenna and wireless communication unit

A signal transmission device includes: a first substrate and a second substrate disposed to oppose each other in a first direction; a first resonator including a plurality of first quarter wavelength resonators provided in a first region of the first substrate, and interdigitally coupled to one another in the first direction, and a single or the plurality of second quarter wavelength resonators provided in a region of the second substrate corresponding to the first region and interdigitally coupled to one another in the first direction; and a second resonator electromagnetically coupled to the first resonator, and performing a signal transmission between the second resonator and the first resonator. The first and the second quarter wavelength resonators located at positions nearest to one another in the first resonator, respectively have open ends which are disposed to oppose one another, and respectively have short-circuit ends which are disposed to oppose one another.

In a signal transmission device, first open-ended resonators include a first first-open-ended resonator and a second first-open-ended resonator, in which open ends of the first first-open-ended resonator face a central portion of the second first-open-ended resonator, and a central portion of the first first-open-ended resonator faces open ends of the second first-open-ended resonator. When second open-ended resonators are employed, the second open-ended resonators include a first second-open-ended resonator and a second second-open-ended resonator, in which open ends of the first second-open-ended resonator face a central portion of the second second-open-ended resonator, and a central portion of the first second-open-ended resonator faces open ends of the second second-open-ended resonator. The first and the second open-ended resonators in closest proximity to each other in the first resonator are arranged such that the respective open ends thereof face each other and the respective central portions thereof face each other.

A signal transmission device includes: a first substrate and a second substrate; a first resonance section including a first resonator and a second resonator electromagnetically coupled to each other; a second resonance section disposed side-by-side relative to the first resonance section, and electromagnetically coupled to the first resonance section to perform a signal transmission between the first and second resonance sections; and a first shielding electrode disposed between the first resonator and the second substrate and partially covering the first resonator to allow at least an open end of the first resonator to be covered therewith, and a second shielding electrode disposed between the second resonator and the first substrate and partially covering the second resonator to allow at least an open end of the second resonator to be covered therewith.

A proximity antenna includes a wiring pattern wound in a predetermined direction in a horizontal plane from a signal end to a ground end and a wiring pattern wound in a direction opposite to the predetermined direction in a horizontal plane from a signal end to a ground end, in which the wiring pattern and the wiring pattern are apposed in a vertical direction. The characteristics of a spiral coil having several turns can be thus obtained by a one-turn wiring width, and an installation space for other components, larger than a conventional installation space, can be therefore secured.

Proximity antenna and wireless communication device

A balanced-output triplexer includes: a first filter provided between an input terminal and a pair of first balanced output terminals; a second filter provided between the input terminal and a pair of second balanced output terminals; and a third filter provided between the input terminal and a pair of third balanced output terminals. All of the first to third filters are provided within a layered substrate. All of the balanced output terminals are disposed to be adjacent to one of the sides of the top surface of the layered substrate and one of the sides of the bottom surface of the layered substrate.

Balanced-output triplexer

A resonator includes: a dielectric block; first and second ground electrodes provided on or in the dielectric block, and disposed to oppose each other; a first via conductor provided in the dielectric block orthogonally to the first and second ground electrodes, and having a short-circuit end connected to the first ground electrode and an open end extending toward the second ground electrode; a second via conductor interdigitally-coupled with the first via conductor, and provided in the dielectric block orthogonally to the first and second ground electrodes, and having a short-circuit end connected to the second ground electrode and an open end extending toward the first ground electrode; a first capacitor electrode provided in the dielectric block, and connected to the first via conductor; and a second capacitor electrode provided in the dielectric block, and connected to the second via conductor.

Resonator and filter

A filter being small and having a narrowband filter characteristic is achieved using interdigital-coupled resonators. A first resonator and a second resonator are configured using interdigital-coupled quarter-wavelength resonators respectively. In addition, the first resonator and the second resonator are disposed so as to extend along directions intersecting with each other at a predetermined angle &#x3b8;. Thus, coupling between the resonators is reduced compared with, for example, a case that the first resonator and the second resonator are, as a whole, disposed in parallel to each other. The angle &#x3b8;, with which the first resonator and the second resonator are disposed respectively, is adjusted, thereby coupling between the resonators may be made into a desired state. Thus, a desired narrowband filter characteristic is obtained.

Filter

The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the balanced electromagnetic waves while easily realizing miniaturization. The RF module includes: a waveguide in which a half-wavelength TE mode resonator is formed; an E plane coupling window formed in a wall portion orthogonal to an H plane out of wall portions constructing the TE mode resonator in the waveguide; an output line provided at the edge on the side of the wall portion parallel with the H plane on the E plane coupling window, and magnetically coupled to electromagnetic waves in the TE mode resonator; and another output line provided at the edge on the side of the wall portion parallel with the H plane in the E plane coupling window, and magnetically coupled to the electromagnetic waves.

RF module

Provided are a stacked resonator capable of achieving miniaturization and minimum loss, and a stacked resonator capable of suppressing any unnecessary resonance mode due to interdigital-coupling. The stacked resonator includes a first conductor group having a plurality of conductor lines in a stacking arrangement, and a second conductor group having a plurality of other conductor lines in a stacking arrangement so as to be alternately provided opposing to the conductor lines in the first conductor group, thereby establishing an interdigital-coupling together with the first conductor group.

Growing community of inventors

Tokyo, Japan

Tatsuya Fukunaga