Disclosed is an antenna device or the like having a split ring resonator that adapts to different frequency bands. An antenna device has a laminated structure that is composed by alternating dielectric layers (DL) (35) and conductor layers (CL) and that includes a plurality of structures each comprising: a first split ring (first SR) (31) that is formed in a first conductor layer (first CL) (36A) extending along one surface of a DL (35), surrounds an opening (2) and has a first split (first SP) (51) formed in a circumferential portion along the opening (2); a second split ring (second SR) (32) that is formed in a second conductor layer (second CL) (36B), which extends along the other surface of the DL (35), in such a manner that the second SR (32) is opposed to the first SR (31), the second SR (32) surrounding the opening (2) and having a second split (second SP) (52) formed in a circumferential portion along the opening (2); a plurality of conductor vias (CVs) (3) that are circumferentially formed at intervals, sandwich the first SP (51) and second SP (52) and electrically connect the first SR (31) to the second SR (32); and a feeder line (4) that is formed in a particular one of the CLs and has one end electrically connected to at least one of the CVs (3) and the other end insulated from the particular CL by a clearance (39) formed in the particular CL along the extending direction of the particular CL.

The present invention provides a millimeter wave array antenna and mobile terminal. The millimeter wave array antenna includes several antenna elements arranged in an array, each antenna element includes a first radiation patch, a second radiation patch, a first grounding plate, a power divider layer and a second grounding plate sequentially stacked from top to bottom. The first radiating patch is spaced apart from and coupled to the second radiating patch. The second radiating patch is provided with two feeding ends, and each feeding end is provided with two feeding notches. The power divider layer includes two transmission lines, each includes one input port and two phase-inverted output ports electrically connected to the input port. The two phase-inverted output ports are respectively coupling-fed two feeding notches of one feeding end. Each antenna element generates orthogonal polarization and dual-band resonance under excitation of two input ports.

The present invention provides a millimeter wave array antenna and mobile terminal. The millimeter wave array antenna includes several antenna elements arranged in an array, each antenna element includes a first radiation patch, a second radiation patch, a first grounding plate, a power divider layer and a second grounding plate sequentially stacked from top to bottom. The first radiating patch is spaced apart from and coupled to the second radiating patch. The second radiating patch is provided with two feeding ends, and each feeding end is provided with two feeding notches. The power divider layer includes two transmission lines, each includes one input port and two phase-inverted output ports electrically connected to the input port. The two phase-inverted output ports are respectively coupling-fed two feeding notches of one feeding end. Each antenna element generates orthogonal polarization and dual-band resonance under excitation of two input ports.

An antenna includes a first radiator and a first capacitor structure. A first end of the first radiator is electrically connected to a signal feed end of a printed circuit board by means of the first capacitor structure, and a second end of the first radiator is electrically connected to a ground end of the printed circuit board. The first radiator, the first capacitor structure, the signal feed end, and the ground end form a first antenna configured to produce a first resonance frequency. An electrical length of the first radiator is greater than one eighth of a wavelength corresponding to the first resonance frequency, and the electrical length of the first radiator is less than a quarter of the wavelength corresponding to the first resonance frequency.

An antenna apparatus is provided. The antenna apparatus is formed by using a metal frame of an electronic device. Slots are arranged on both a bottom metal frame and a side metal frame to balance free space radiation efficiency and handheld radiation efficiency. In a free space scene, a portrait mode of an antenna is strong, and free space radiation efficiency is good. When an electronic device is held in the hand, a lateral mode of the antenna is strong, and handheld radiation efficiency is good.

An antenna apparatus is provided. The antenna apparatus is formed by using a metal frame of an electronic device. Slots are arranged on both a bottom metal frame and a side metal frame to balance free space radiation efficiency and handheld radiation efficiency. In a free space scene, a portrait mode of an antenna is strong, and free space radiation efficiency is good. When an electronic device is held in the hand, a lateral mode of the antenna is strong, and handheld radiation efficiency is good.

A device comprising: a substrate; a semiconductor die mounted on the substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals at least at a first center frequency; a receive antenna fabricated on the substrate and configured to receive RF signals at least at a second center frequency different than the first center frequency; and circuitry integrated with the semiconductor die and configured to provide RF signals to the transmit antenna and to receive RF signals from the receive antenna.

A device comprising: a substrate; a semiconductor die mounted on the substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals at least at a first center frequency; a receive antenna fabricated on the substrate and configured to receive RF signals at least at a second center frequency different than the first center frequency; and circuitry integrated with the semiconductor die and configured to provide RF signals to the transmit antenna and to receive RF signals from the receive antenna.

An antenna device that uses an exterior metal frame is provided. The antenna includes a Printed Circuit Board (PCB); a plurality of segment-type exterior metal frames spaced apart from the PCB; a feeding portion connected to one metal frame of the plurality of segment-type exterior metal frames; and a slit located between the PCB and the one metal frame, wherein the one metal frame fed through the feeding portion operates with radiation, or the slit operates with radiator, or another exterior metal frame fed through the feeding portion operates with radiation.

An antenna device that uses an exterior metal frame is provided. The antenna includes a Printed Circuit Board (PCB); a plurality of segment-type exterior metal frames spaced apart from the PCB; a feeding portion connected to one metal frame of the plurality of segment-type exterior metal frames; and a slit located between the PCB and the one metal frame, wherein the one metal frame fed through the feeding portion operates with radiation, or the slit operates with radiator, or another exterior metal frame fed through the feeding portion operates with radiation.