An antenna apparatus includes: a first dielectric layer having a first dielectric constant; a first patch antenna pattern disposed in the first dielectric layer; a second dielectric layer having a second dielectric constant; a second patch antenna pattern disposed on the second dielectric layer; a first feed via coupled to the first patch antenna pattern; and a second feed via coupled to the second patch antenna pattern. The first dielectric constant is higher than the second dielectric constant, and a frequency of a signal transmitted/received by the first patch antenna pattern is lower than a frequency of a signal transmitted/received by the second patch antenna pattern.

A radiofrequency transmission/reception device includes a first and a second conductive wire element, a first far-field transmission/reception chip and a second near-field transmission/reception chip. The first and the second wire element combine with the characteristic impedance of the second transmission/reception chip in order to form a coupling device associated with the first transmission/reception chip at the operating frequency of the first chip. The first and the second wire element combine with the characteristic impedance of the first transmission/reception chip in order to form a coupling device associated with the second transmission/reception chip at the operating frequency of the second chip.

An antenna device according to an aspect of the present disclosure includes a zeroth-order resonant antenna and a first-order resonant antenna. The zeroth-order resonant antenna includes a base plate, a platy radiation element, and a connection conductor connecting the base plate and the platy radiation element. The zeroth-order resonant antenna is configured to transmit and/or receive a first linearly polarized radio wave in all directions perpendicular to the first linearly polarized radio wave by zeroth order resonance. The first-order resonant antenna includes the base plate shared with the zeroth-order resonant antenna, and a first radiation element located on the same plane as the base plate. The first-order resonant antenna is configured to transmit and/or receive a second linearly polarized radio wave perpendicular to the first linearly polarized radio wave by first order resonance.

An antenna device according to an aspect of the present disclosure includes a zeroth-order resonant antenna and a first-order resonant antenna. The zeroth-order resonant antenna includes a base plate, a platy radiation element, and a connection conductor connecting the base plate and the platy radiation element. The zeroth-order resonant antenna is configured to transmit and/or receive a first linearly polarized radio wave in all directions perpendicular to the first linearly polarized radio wave by zeroth order resonance. The first-order resonant antenna includes the base plate shared with the zeroth-order resonant antenna, and a first radiation element located on the same plane as the base plate. The first-order resonant antenna is configured to transmit and/or receive a second linearly polarized radio wave perpendicular to the first linearly polarized radio wave by first order resonance.

Provided is an antenna apparatus, the antenna apparatus comprising a first antenna unit, which is arranged at one end of a terminal device; and a second antenna unit, which is arranged at one end of the terminal device. The first antenna unit comprises a first side frame, a first built-in antenna, a first ground wire, and a first feed point, wherein a first end of the first side frame is connected to the first built-in antenna and the first ground wire, and a second end of the first side frame is provided with the first feed point; and the second antenna unit comprises a second side frame, a first switch, a second ground wire, a connecting wire, a second built-in antenna, a third built-in antenna, and a second feed point.

Provided are an antenna apparatus and an electronic device. The antenna apparatus includes a radiator, a near-field communication chip and a first non-near-field communication chip. The radiator includes a ground point and a first feeding point that are spaced apart from each other, and the ground point is grounded. The near-field communication chip is configured to provide a differential excitation current. The first non-near-field communication chip is configured to provide a first non-near-field communication excitation current.

The present disclosure relates to a microstrip antenna device, which may comprise a center-fed antenna array. Further, the present disclosure provides a radar device, which comprises the antenna device, and a method for fabricating the antenna device. The antenna device comprises a substrate with top and bottom surface, a two-dimensional first and second conductive structure, which are arranged adjacent to each other on the top surface, and a two-dimensional third conductive structure, arranged on the bottom surface and providing an electric ground plane. The first conductive structure comprises a first array of antennas and a first feed network, and the second conductive structure comprises a second array of antennas and a second feed network. Further, a slot line is formed in the third conductive structure, for feeding a signal to the first feed network and to the second feed network.

The present disclosure relates to a microstrip antenna device, which may comprise a center-fed antenna array. Further, the present disclosure provides a radar device, which comprises the antenna device, and a method for fabricating the antenna device. The antenna device comprises a substrate with top and bottom surface, a two-dimensional first and second conductive structure, which are arranged adjacent to each other on the top surface, and a two-dimensional third conductive structure, arranged on the bottom surface and providing an electric ground plane. The first conductive structure comprises a first array of antennas and a first feed network, and the second conductive structure comprises a second array of antennas and a second feed network. Further, a slot line is formed in the third conductive structure, for feeding a signal to the first feed network and to the second feed network.

An electronic device is provided. The electronic device includes a housing, an antenna structure, a first conductive material, and a second conductive material. The housing may be configured to provide a front surface and a rear surface of the electronic device. The antenna structure includes a printed circuit board positioned in the housing. The printed circuit board includes a first surface configured to face the front surface or the rear surface and a second surface configured to face a direction opposite to the first surface. The printed circuit board includes a first conductive layer, a second conductive layer, and a dielectric. The first conductive layer includes a first antenna element and a second antenna element which are configured so as not to overlap each other when viewed from above the first surface.

An electronic device is provided. The electronic device includes a housing, an antenna structure, a first conductive material, and a second conductive material. The housing may be configured to provide a front surface and a rear surface of the electronic device. The antenna structure includes a printed circuit board positioned in the housing. The printed circuit board includes a first surface configured to face the front surface or the rear surface and a second surface configured to face a direction opposite to the first surface. The printed circuit board includes a first conductive layer, a second conductive layer, and a dielectric. The first conductive layer includes a first antenna element and a second antenna element which are configured so as not to overlap each other when viewed from above the first surface.