Abstract: In a first region of a ground electrode, a width of a protrusion of the ground electrode in a first direction, in which a notch portion is formed, from a slot is different from a width of the ground electrode in a second direction opposite to the first direction from the slot.

Abstract: An antenna element includes a dielectric substrate, a first ground electrode, a second ground electrode, a via conductor, and a radiation electrode. The dielectric substrate includes a first portion shaped like a flat plate and a second portion thinner than the first portion. The first ground electrode is arranged in the first portion. The second ground electrode is arranged in the second portion. The via conductor couples the first ground electrode and the second ground electrode. A distance between the radiation electrode and the first ground electrode in a first thickness direction is more than a distance between the radiation electrode and the second ground electrode in a second thickness direction. Part of the radiation electrode lies opposite to the first ground electrode without lying opposite to the second ground electrode.

Abstract: An antenna module includes a mounting board with a flat plate shape, and a power supply circuit to supply a radio frequency signal. The power supply circuit is mounted on the mounting board, and a radiating electrode is arranged on the power supply circuit. A dielectric fills a region around the power supply circuit and the radiating electrode. A conductive layer covers at least part of the dielectric. In the dielectric, a lens part is formed at a position overlapping the radiating electrode in plan view of the mounting board. The dielectric includes a first region in which the lens part is formed and a second region other than the first region, and the conductive layer is formed in the second region.

Abstract: An antenna module includes a dielectric substrate having a multilayer structure, a ground electrode disposed in the dielectric substrate, a plate-like fed element facing the ground electrode and disposed at a layer different from a layer including the ground electrode, a feed line for transferring a radio-frequency signal to a feed point of the fed element, and a stub. The stub branches off from the feed line at a branch point of the feed line and has an open end. The stub is disposed between the fed element and the ground electrode. When the dielectric substrate is viewed in plan view, the open end coincides with the fed element.

Abstract: An antenna module includes a dielectric substrate, radiating circuits disposed on the dielectric substrate, a ground electrode, and a dielectric layer. In a plan view in a direction of a normal line of the dielectric substrate, the radiating circuit is disposed adjacent to the radiating circuit. The ground electrode is disposed to face the radiating circuit and the radiating circuit. The dielectric layer is disposed to cover the radiating circuit. The radiating circuit is capable of emitting an electric wave in a frequency band higher than that for the radiating circuit. A dielectric constant of the dielectric layer is higher than a dielectric constant of the dielectric substrate. A distance between the radiating circuit and the ground electrode is shorter than a distance between the radiating circuit and the ground electrode.

Abstract: An antenna module including a mount substrate that has a flat-plate shape having a surface and a surface, an RFIC that is disposed on the surface side and supplies a radio-frequency signal, and a radiating electrode, in which the mount substrate is provided with a cavity at a position overlapping with the radiating electrode assuming the mount substrate is viewed in plan view, and a periphery of the radiating electrode including an inside of the cavity is filled with a mold resin. The mold resin is provided with a lens at a position overlapping with the radiating electrode assuming the mount substrate is viewed in plan view and on the surface side.

Abstract: A plurality of multi-band antenna elements operable at a plurality of frequencies constitutes an array antenna. An antenna drive unit selects at least some of the multi-band antenna elements from the plurality of multi-band antenna elements in accordance with one operation frequency selected from the plurality of operation frequencies, and causes the selected multi-band antenna elements to operate.

Abstract: An antenna device includes a ground electrode, a feed element, and a parasitic element. The ground electrode has a substantially non-square rectangular plane shape that includes a first side extending in a first direction and a second side extending in a second direction orthogonal to the first direction. The feed element has a substantially rectangular plane shape and is formed in such a way that each side of the feed element becomes parallel to the first direction or the second direction. The parasitic element is formed in such a manner as to face a side of the feed element parallel to the first side. The feed element is configured to radiate a first polarized wave that excites in the first direction and a second polarized wave that excites in the second direction. The length of the first side is longer than the length of the second side.

Abstract: An antenna module includes a dielectric layer in a form of a flat plate, a ground electrode, a radiating element, and a wiring cable. The ground electrode is arranged on a lower surface of the dielectric layer. The radiating element is arranged on an upper surface of the dielectric layer as being opposed to the ground electrode. The wiring cable faces a side surface of the dielectric layer, and includes a ground electrode and a power feeder line that conveys a radio frequency signal to the radiating element. The wiring cable is smaller in thickness than the dielectric layer. The power feeder line and the ground electrode are electrically connected to the radiating element and the ground electrode, respectively. The ground electrode is arranged at a position different from a position of the ground electrode in a direction of thickness of the dielectric layer.

Abstract: A communication apparatus includes: an antenna module provided with an antenna element having a flat plate shape; a housing that accommodates the antenna module; a heat dissipation plate; and an electrode. The heat dissipation plate is disposed between the housing and the antenna module, and provided with an opening that faces the antenna element. The electrode faces the antenna element in a direction normal to the antenna element and on a side of the first radiating element that radiates the radio wave.

Abstract: The antenna module includes a first substrate and a second substrate on each of which a radiating element is arranged, a third substrate, and a switch circuit. An RFIC for supplying a radio frequency signal to the first substrate and the second substrate is arranged on the third substrate. The switch circuit is configured to change over a connection between the RFIC and the radiating element on the first substrate and a connection between the RFIC and the radiating element on the second substrate.

Abstract: An antenna module includes a first substrate, a second substrate, a connection member connected between the first substrate and the second substrate, and an FEM disposed on the connection member. A radiating element is disposed on the first substrate. An RFIC for supplying a radio frequency signal to the radiating element is disposed on the second substrate. The connection member transmits radio frequency signals between the RFIC and the radiating element. The FEM amplifies radio frequency signals transmitted between the RFIC and the radiating element. The FEM is disposed at a position between a connecting point with the first substrate and a connecting point with the second substrate on the connection member.

Abstract: An antenna module includes feed elements each having a flat plate shape and a ground electrode arranged opposite the feed elements. The feed element radiates a radio wave of a first frequency band. The feed element radiates a radio wave of a second frequency band that is higher than the first frequency band. In a plan view of the feed element, the distance from the center of the feed element to an end portion of the ground electrode in a first direction is shorter than or equal to ½ of a free space wavelength of a radio wave radiated from the feed element. A feed point of the feed element is arranged at a location shifted in a second direction from the center of the feed element, and the second direction is different from the first direction.

Abstract: An antenna device includes a ground electrode, a feed element, and a parasitic element. The ground electrode has a substantially non-square rectangular plane shape that includes a first side extending in a first direction and a second side extending in a second direction orthogonal to the first direction. The feed element has a substantially rectangular plane shape and is formed in such a way that each side of the feed element becomes parallel to the first direction or the second direction. The parasitic element is formed in such a manner as to face a side of the feed element parallel to the first side. The feed element is configured to radiate a first polarized wave that excites in the first direction and a second polarized wave that excites in the second direction. The length of the first side is longer than the length of the second side.

Abstract: An antenna module includes a dielectric substrate, a ground electrode, a power feeding element (121) and a power feeding element (122) each facing the ground electrode, and power feeding wirings (141) and (142). The power feeding wiring (141) transmits a radio frequency signal to a power feeding point (SP1) of the power feeding element (121). The power feeding wiring (142) transmits a radio frequency signal to a power feeding point (SP2) of the power feeding element (122). A frequency of a radio wave from the power feeding element (122) is higher than a frequency of a radio wave from the power feeding element (121). The power feeding wiring (142) includes a via rises from the ground electrode side to the power feeding element (122) at a position different from the power feeding point (SP2) and a wiring pattern that connects the via and the power feeding point (SP2).

Abstract: An antenna module includes a first antenna element disposed at a first dielectric substrate, a second antenna element disposed at a second dielectric substrate, a joint connecting the first dielectric substrate and the second dielectric substrate, and a power supply line. The second dielectric substrate is different from the first dielectric substrate with respect to the normal direction. The power supply line extends from the first dielectric substrate via the joint to the second antenna element and is configured to communicate a radio-frequency signal to the second antenna element. At least a part of the power supply line at the joint is formed in a direction crossing the polarization plane of radio waves radiated by the first antenna element and the second antenna element.

Abstract: An antenna module includes a base member, an antenna that includes a radiating element disposed in or on the base member, first and second feed lines each of which is connected to the radiating element, and a control circuit that is connected to the radiating element via the first feed line and the second feed line. The control circuit includes a signal processing circuit that is connected to the antenna via the first feed line and the second feed line and an antenna inspection circuit that checks an electrical conductivity of an electrical conduction path connecting the first feed line, the radiating element, and the second feed line to one another.

Abstract: An antenna module includes a dielectric substrate, in or on which a feed element is formed, a dielectric substrate, in which a ground electrode (GND) is formed, and conductive members. The dielectric substrate is disposed opposite the dielectric substrate. When viewed in plan in the direction normal to the feed element, the conductive members are disposed around the feed element. An air layer is formed between the dielectric substrate and the dielectric substrate. The conductive members are formed in the air layer.

Abstract: An antenna module (100) includes a dielectric substrate (130) having a multilayer structure, a first radiating electrode (121) and a ground electrode (GND) that are disposed in the dielectric substrate (130), and a second radiating electrode (150) disposed in a layer between the first radiating electrode (121) and the ground electrode (GND). The first radiating electrode (121) is a power feed element to which radio frequency power is supplied. When the antenna module (100) is viewed in plan from a normal direction of the dielectric substrate (130), the first radiating electrode (121) and the second radiating electrode (150) at least partially overlap with each other. A thickness of the second radiating electrode (150) is larger than that of the first radiating electrode (121).

Abstract: An antenna element includes a dielectric substrate, a radiation electrode, a first ground electrode, a second ground electrode, and a via conductor that connects the first ground electrode and the second ground electrode to each other. The dielectric substrate includes a flat-plate-shaped first part and a second part that is thinner than the first part. The radiation electrode and the first ground electrode are arranged on or in the first part so as to face each other in the thickness direction of the first part. The second ground electrode is spaced apart from the radiation electrode. The second ground electrode is arranged on or in the second part so as to not face the radiation electrode in the thickness direction of the second part. The radiation electrode is capacitively coupled to the second ground electrode and the via conductor.