Abstract: An antenna structure includes a dielectric substrate, a conductive frame, a first radiation element, and a second radiation element. The dielectric substrate has a first surface and a second surface which are opposite to each other. The conductive frame is disposed on the first surface of the dielectric substrate. The conductive frame has a slot region. The first radiation element is disposed on the second surface of the dielectric substrate, and is coupled to a feeding point. The second radiation element is disposed on the first surface of the dielectric substrate, and is coupled to the conductive frame. The second radiation element is adjacent to the first radiation element. The first radiation element is partially adjacent to the second radiation element on one side. The first radiation element and the second radiation element are substantially positioned inside the slot region of the conductive frame.

Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a first coupling branch, an inductive element, and a dielectric substrate. The feeding radiation element has a feeding point. The first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The second radiation element and the first radiation element substantially extend in opposite directions. The first coupling branch is coupled through the inductive element to a first grounding point on the ground element. The first coupling branch includes an elevated portion extending across the first radiation element. The ground element, the feeding radiation element, the first radiation element, the second radiation element, the inductive element, and the first coupling branch are disposed on the same surface of the dielectric substrate.

Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a first coupling branch, and a dielectric substrate. The feeding radiation element has a feeding point. The first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The second radiation element and the first radiation element substantially extend in opposite directions. The first coupling branch is coupled to a first grounding point on the ground element. The first coupling branch extends across the first radiation element. The first coupling branch includes a first coil portion and a first connection portion.

Abstract: A reflector structure is configured to connect an antenna. The antenna has an excitation source. The reflector structure includes a metal substrate, at least one first flat plate and a second flat plate. The metal substrate is configured to reflect the radiation of the antenna. The at least one first flat plate is disposed on the metal substrate. The second flat plate is floated to the metal substrate along a virtual normal and completely separated from the at least one first flat plate to form a closed slot. A cavity is formed by the metal substrate, the at least one first flat plate and the second flat plate and communicated with the closed slot. The excitation source is projected onto a plane to form an excitation source region. The excitation source region is located in the second flat plate.

Abstract: A wireless communication device is provided. The wireless communication device includes a circuit substrate, an antenna cover, a first antenna array and a first power divider. The first antenna array is arranged between the circuit substrate and the antenna cover. The first antenna array includes two first antenna elements and two second antenna elements. The first antenna elements are disposed on a first surface of the circuit substrate. The second antenna elements are arranged on the antenna cover and correspond to the first antenna elements, respectively. Each of the second antenna elements and a corresponding one of the first antenna elements are separated from and coupled to each other. In response to the two first antenna elements being fed with a first signal provided by a signal source from the first power divider, the first antenna array is configured to generate a radiation pattern having a first polarization direction.

Abstract: An antenna structure includes a metal mechanism element, a dielectric substrate, a feeding radiation element, and a coupling radiation element. The metal mechanism element has a slot. The slot has a first closed end and a second closed end. The dielectric substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element is coupled to a signal source, and is disposed on the second surface of the dielectric substrate. The feeding radiation element has a first vertical projection on the metal mechanism element. The coupling radiation element is coupled to a ground voltage, and is disposed on the first surface of the dielectric substrate. The coupling radiation element has a second vertical projection on the metal mechanism element. The second vertical projection of the coupling radiation element at least partially overlaps the first vertical projection of the feeding radiation element.

Abstract: An antenna structure includes a metal mechanism element, a dielectric substrate, a feeding radiation element, and a coupling radiation element. The metal mechanism element has a slot. The slot has a first closed end and a second closed end. The dielectric substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element is coupled to a signal source, and is disposed on the second surface of the dielectric substrate. The feeding radiation element has a first vertical projection on the metal mechanism element. The coupling radiation element is coupled to a ground voltage, and is disposed on the first surface of the dielectric substrate. The coupling radiation element has a second vertical projection on the metal mechanism element. The second vertical projection of the coupling radiation element at least partially overlaps the first vertical projection of the feeding radiation element.

Abstract: An antenna structure includes a substrate, a feeding radiation element, a first grounding radiation element, a second grounding radiation element, and a first circuit element. The substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element includes a body portion, a bridging portion, and an extension portion. The body portion has a feeding point. The bridging portion is coupled between the body portion and the extension portion. The first grounding radiation element is coupled to a ground voltage. The first circuit element is coupled between the first grounding radiation element and the second grounding radiation element. The bridging portion of the feeding radiation element is disposed on the first surface of the substrate. The first circuit element is disposed on the second surface of the substrate.

Abstract: A reflector structure is configured to connect an antenna. The antenna has an excitation source. The reflector structure includes a metal substrate, at least one first flat plate and a second flat plate. The metal substrate is configured to reflect the radiation of the antenna. The at least one first flat plate is disposed on the metal substrate. The second flat plate is floated to the metal substrate along a virtual normal and completely separated from the at least one first plate to form a closed slot. A cavity is formed by the metal substrate, the at least one first flat plate and the second flat plate and communicated with the closed slot. The excitation source is projected onto a plane to form an excitation source region. The excitation source region is located in the second flat plate.

Abstract: An antenna structure includes a substrate, a feeding radiation element, a first grounding radiation element, a second grounding radiation element, and a first circuit element. The substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element includes a body portion, a bridging portion, and an extension portion. The body portion has a feeding point. The bridging portion is coupled between the body portion and the extension portion. The first grounding radiation element is coupled to a ground voltage. The first circuit element is coupled between the first grounding radiation element and the second grounding radiation element. The bridging portion of the feeding radiation element is disposed on the first surface of the substrate. The first circuit element is disposed on the second surface of the substrate.

Abstract: A smart antenna assembly includes a first smart antenna device including a first polarization antenna, a second polarization antenna, a first switch unit, a first control terminal and a second control terminal. The first polarization antenna includes a first antenna, a first reflection element and a second reflection element. The second polarization antenna includes a second antenna, a third reflection element and a fourth reflection element. The first switch unit includes a first switch element electrically connected with the first reflection element, a second switch element electrically connected with the second reflection element, a third switch element electrically connected with the third reflection element, and a fourth switch element electrically connected with the fourth reflection element. The first control terminal is used to turn on the first and third switch elements. The second control terminal is used to turn on the second and fourth switch elements.

Abstract: A smart antenna assembly includes a first smart antenna device including a first polarization antenna, a second polarization antenna, a first switch unit, a first control terminal and a second control terminal. The first polarization antenna includes a first antenna, a first reflection element and a second reflection element. The second polarization antenna includes a second antenna, a third reflection element and a fourth reflection element. The first switch unit includes a first switch element electrically connected with the first reflection element, a second switch element electrically connected with the second reflection element, a third switch element electrically connected with the third reflection element, and a fourth switch element electrically connected with the fourth reflection element. The first control terminal is used to turn on the first and third switch elements. The second control terminal is used to turn on the second and fourth switch elements.

Abstract: An antenna structure includes a dielectric substrate, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a sixth radiation element. The dielectric substrate has an upper surface and a lower surface. The first radiation element, the second radiation element, the fourth radiation element, and the fifth radiation element are disposed on the upper surface of the dielectric substrate. The third radiation element and the sixth radiation element are disposed on the lower surface of the dielectric substrate. A positive feeding point is positioned at an end of the first radiation element. A negative feeding point is positioned at an end of the fourth radiation element. The third radiation element couples the first radiation element to the second radiation element. The sixth radiation element couples the fourth radiation element to the fifth radiation element.

Abstract: A smart antenna comprises a dipole antenna, a first reflector unit, a first diode, a first RF choke unit and a second RF choke unit. The dipole antenna has a first radiating portion and a second radiating portion. The first radiating portion is used for feeding an RF signal and a DC voltage signal controlling the conduction status of the first diode simultaneously. The first reflector unit is disposed on a first side of the dipole antenna and parallel to the dipole antenna. A first section and a second section of the first reflector unit are electrically connected by the first diode. The first RF choke unit is electrically connected between the first radiating portion and the first section of the first reflector unit. The second RF choke unit is electrically connected between the second radiating portion and the second section of the first reflector unit.

Abstract: An antenna structure includes a dielectric substrate, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a sixth radiation element. The dielectric substrate has an upper surface and a lower surface. The first radiation element, the second radiation element, the fourth radiation element, and the fifth radiation element are disposed on the upper surface of the dielectric substrate. The third radiation element and the sixth radiation element are disposed on the lower surface of the dielectric substrate. A positive feeding point is positioned at an end of the first radiation element. A negative feeding point is positioned at an end of the fourth radiation element. The third radiation element couples the first radiation element to the second radiation element. The sixth radiation element couples the fourth radiation element to the fifth radiation element.

Abstract: An antenna system includes a ground metal element, a first signal source, a first antenna, a second signal source, a second antenna, an isolation metal element, and a matching circuit. The first signal source is connected to the ground metal element. The first antenna is connected to the first signal source. The first signal source is configured to excite the first antenna. The second signal source is connected to the ground metal element. The second antenna is connected to the second signal source. The second signal source is configured to excite the second antenna. The isolation metal element is disposed between the first antenna and the second antenna, and is configured to improve the isolation between the first antenna and the second antenna. The matching circuit is connected between the isolation metal element and the ground metal element.

Abstract: A smart antenna comprises a dipole antenna, a first reflector unit, a first diode, a first RF choke unit and a second RF choke unit. The dipole antenna has a first radiating portion and a second radiating portion. The first radiating portion is used for feeding an RF signal and a DC voltage signal controlling the conduction status of the first diode simultaneously. The first reflector unit is disposed on a first side of the dipole antenna and parallel to the dipole antenna. A first section and a second section of the first reflector unit are electrically connected by the first diode. The first RF choke unit is electrically connected between the first radiating portion and the first section of the first reflector unit. The second RF choke unit is electrically connected between the second radiating portion and the second section of the first reflector unit.

Abstract: An antenna system includes a ground metal element, a first signal source, a first antenna, a second signal source, a second antenna, an isolation metal element, and a matching circuit. The first signal source is connected to the ground metal element. The first antenna is connected to the first signal source. The first signal source is configured to excite the first antenna. The second signal source is connected to the ground metal element. The second antenna is connected to the second signal source. The second signal source is configured to excite the second antenna. The isolation metal element is disposed between the first antenna and the second antenna, and is configured to improve the isolation between the first antenna and the second antenna. The matching circuit is connected between the isolation metal element and the ground metal element.

Abstract: A test device for wireless electronic devices includes a metal casing, a RF-absorbing material, a measurement antenna, and an impedance adjustment module. The impedance adjustment module includes a dielectric layer, a microstrip line, and a slot line, wherein the slot line is electrically connected to the measurement antenna. The microstrip line and the slot line are disposed on two opposite sides of the dielectric layer and respectively include a first body and a second body, which are parallel to each other.