Abstract: A planar dual polarization antenna for receiving and transmitting at least one radio signal includes a first patch plate, a metal grounding plate and a first dielectric layer disposed between the first patch plate and the metal grounding plate. The metal grounding plate includes a first pattern slot and a second pattern slot symmetric with respect to a centerline of the first patch plate. A first rectangle and a second rectangle enclosing an angle constitute a shape of the first pattern slot. The first rectangle and the second rectangle meet at a pivot vertex.

Abstract: A smart antenna module includes an omni-directional antenna and at least one reflecting unit for adjusting a radiation pattern of the smart antenna module, wherein the one reflecting unit includes a reflector and a switch coupled between the reflector and a ground of the omni-directional antenna for electrically connecting the reflector with the ground or separating the reflector from the ground according to a control signal to adjust the radiation pattern of the smart antenna module.

Abstract: An antenna device includes a dual-band cross dipole antenna including four radiators each extending from an axis toward a plane and including a first radiating element and a second radiating element for transmitting or receiving radio signals of a first band and a second band, wherein a plane where each radiator is located is perpendicular to a plane where a neighboring radiator is located; and a reflecting board disposed on a side of the dual-band cross dipole antenna, wherein a location and a shape of the reflecting board relate to wavelengths corresponding to signals of the first band and the second band, such that the dual-band cross dipole antenna is directional in the first band and omnidirectional in the second band.

Abstract: An antenna for receiving and transmitting radio signals, including a reflective unit, comprising a central reflective element; and a plurality of peripheral reflective elements, enclosing the central reflective element to form a frustum structure; and at least one radiation unit, disposed above the central reflective element; where the reflective unit is electrically isolated from the at least one radiation unit.

Abstract: A planar dual polarization antenna for receiving and transmitting radio signals includes an upper patch plate and a metal grounding plate with a width along a first direction and a length along a second direction. A shape of the upper patch plate has a first symmetry axis along the first direction and a second symmetry axis along the second direction. The first symmetry axis divides the upper patch plate into a first section and a third section. The second symmetry axis divides the upper patch plate into a second section and a fourth section. A first geometry center of the first section and the symmetry center are separated by a first distance, and a second geometry center of the second section and the symmetry center are separated by a second distance unequal to the first distance.

Abstract: A planar dual polarization antenna for receiving and transmitting at least one radio signal includes a first patch plate, a metal grounding plate and a first dielectric layer disposed between the first patch plate and the metal grounding plate. The metal grounding plate includes a first pattern slot and a second pattern slot symmetric with respect to a centerline of the first patch plate. A first rectangle and a second rectangle enclosing an angle constitute a shape of the first pattern slot. The first rectangle and the second rectangle meet at a pivot vertex.

Abstract: A dual-band antenna including a ground element, a radiation element and at least one open slot is provided. The radiation element has a bending to form a first radiation portion and a second radiation portion. The first radiation portion has a feeding point adjacent to the ground element. The width of the first radiation portion is gradually increased along a direction far away from the ground element. The second radiation portion forms an orthogonal projection on the ground element. One open slot at least passes through the second radiation portion.

Abstract: A switchable antenna includes a substrate, a first antenna element, a second antenna element, a first switch element, a second switch element, a first radiating portion on an upper surface of the substrate including a first center, a first bend section and a second bend section, and a second radiating portion on an lower surface of the substrate including a second center, a third bend section and a fourth bend section. The third and the fourth bend sections extending from the second center are respectively disposed corresponding to the first and the second bend sections extending from the first center. The first and the second antenna elements on the upper surface are disposed corresponding to the first and the second bend sections. The first and the second switch elements are respectively configured to switch the first and the second antenna elements between a reflector and a parasitic radiating element.

Abstract: A multiband antenna configuration method for configuring a multiband antenna to transmit and receive radio signals of a plurality of frequency bands includes determining a distance between a magnetic conductor reflector and a first radiation portion, calculating a first and second reflection phase value at the first and second center frequency of a first and second frequency band according to a configuration requirement corresponding to the distance, determining a length and width of the multiband antenna, adjusting materials and geometric features of the magnetic conductor reflector to change a curve representing relationship between reflection phases of the magnetic conductor reflector and frequencies and to make the first reflection phase corresponding to the first center frequency and the second reflection phase corresponding to the second center frequency equal to a first reflection phase value and second reflection phase value, and determining the materials and geometric features according to the curve.

Abstract: A radio-frequency transceiver system adapted to a wireless local area network includes an antenna set, including a plurality of antenna units disposed toward a plurality of directions, a radio-frequency signal processing module for processing radio-frequency signals, and a switching module electrically coupled between the antenna set and the radio-frequency signal processing module for switching between different connection states of the radio-frequency signal processing module and the antenna units of the antenna set such that the radio-frequency transceiver system switches between an omnidirectional mode and a directional mode. In the omnidirectional mode, the antenna units are electrically connected to the radio-frequency signal processing module to transmit or receive radio-frequency signals omni-directionally.

Abstract: A planar dual polarization antenna for receiving and transmitting radio signals includes a feeding transmission line layer, a first dielectric layer formed on the feeding transmission line layer, a metal grounding plate, a second dielectric layer formed on the metal grounding plate, and a first patch plate formed on the second dielectric layer with a shape substantially conforming to a cross pattern. A first slot and a second slot of the metal grounding plate are electrically coupled to a first feeding transmission line and a second feeding transmission line of the feeding transmission line layer respectively, to increase bandwidth of the planar dual polarization antenna.

Abstract: A radio-frequency device for a wireless communication device includes an antenna disposition area; a plurality of linearly polarized antennas for transmitting and receiving a plurality of radio signals, wherein the plurality of linearly polarized antennas are substantially disposed in the antenna disposition area in a manner such that polarization directions of the plurality of linearly polarized antennas are orthogonal to each other; and a grounding resonant element coupled to a grounding terminal of one of the plurality of linearly polarized antennas for enhancing isolations of the plurality of linearly polarized antennas.

Abstract: A microstrip antenna transceiver with switchable polarization, used in a satellite signal reception device, includes a base board, having a first surface and a second surface; a ground metal plate, disposed on the first surface of the base board; an antenna module, disposed on the ground metal plate, having a radiating metal patch, a vertically polarized feeding hole and a horizontally polarized feeding hole; a first switch, set on the second surface of the base board; a second switch, set on the second surface of the base board; a first microstrip wire, electrically connected between the vertically polarized feeding hole of the antenna module and the first switch; and a second microstrip wire, electrically connected between the horizontally polarized feeding hole of the antenna module and the second switch.

Abstract: An antenna device is provided and includes a bottom, two monopole antennas, and a cover assembled with the bottom. A projection plane is defined perpendicular to the bottom. The two monopole antennas substantially symmetrically protrude from the bottom, and a gap is formed between the two monopole antennas. Projections of the two monopole antennas on the projection plane intersect with each other. Each of the two monopole antennas includes a first frequency receiving portion adjacent to the bottom, a second frequency receiving portion, and a connection portion located between the first frequency receiving portion and the second frequency receiving portion. A slot is formed through the connection portion to adjust a received frequency of the first or second frequency receiving portion. An accommodating space is formed between the cover and the bottom to accommodate the two monopole antennas.

Abstract: An antenna for receiving and transmitting radio signals includes a ground metal plate, a first patch plate, a second patch plate, a first feed-in wire electrically connected to the first patch plate for transmitting radio signals, a second feed-in wire electrically connected to the second patch plate for transmitting radio signals, and an insulation fixing unit for fixing the ground metal plate, the first patch plate and the second patch plate, to ensure that the ground metal plate, the first patch plate and the second patch plate do not electrically contact to each other.

Abstract: A planar dual polarization antenna for receiving and transmitting radio signals includes a ground metal plate, a first dielectric board formed on the ground metal plate, and a first patch plate formed on the first dielectric board with a shape substantially conforming to a cross pattern.

Abstract: An antenna device is provided and includes a bottom, two monopole antennas, and a cover assembled with the bottom. A projection plane is defined perpendicular to the bottom. The two monopole antennas substantially symmetrically protrude from the bottom, and a gap is formed between the two monopole antennas. Projections of the two monopole antennas on the projection plane intersect with each other. Each of the two monopole antennas includes a first frequency receiving portion adjacent to the bottom, a second frequency receiving portion, and a connection portion located between the first frequency receiving portion and the second frequency receiving portion. A slot is formed through the connection portion to adjust a received frequency of the first or second frequency receiving portion. An accommodating space is formed between the cover and the bottom to accommodate the two monopole antennas.

Abstract: An antenna for receiving and transmitting radio signals includes a ground metal plate, a first patch plate, a second patch plate, a first feed-in wire electrically connected to the first patch plate for transmitting radio signals, a second feed-in wire electrically connected to the second patch plate for transmitting radio signals, and an insulation fixing unit for fixing the ground metal plate, the first patch plate and the second patch plate, to ensure that the ground metal plate, the first patch plate and the second patch plate do not electrically contact to each other.

Abstract: A planar dual polarization antenna for receiving and transmitting radio signals includes a ground metal plate, a first dielectric board formed on the ground metal plate, and a first patch plate formed on the first dielectric board with a shape substantially conforming to a cross pattern.

Abstract: A frequency down converter. A plate body of the frequency down converter includes a main surface. A first wave guide includes a first section and a second section connected to the first section. The first section is connected to the main surface and extends parallel thereto. The second section extends perpendicular to the main surface. A second wave guide includes a third section and a fourth section connected to the third section. The third section is connected to the main surface and extends parallel thereto. The fourth section extends perpendicular to the main surface.