An antenna includes a reflector, a radiating element extending forwardly of the reflector, and a director positioned forwardly of the radiating element. The director includes a plurality of passive impedance elements that provide frequency-dependent reactances to currents induced therein responsive to electromagnetic radiation generated by the radiating element. The plurality of passive impedance elements include: (i) a primary capacitive element, (ii) a first series LC circuit having a first inductor therein electrically connected to a first portion of the primary capacitive element, and (iii) a second series LC circuit having a second inductor therein electrically connected to a second portion of the primary capacitive element.

According to embodiments of the disclosure, a foldable electronic device includes: a first housing including a first rear cover and a first side member comprising a side wall, a second housing including a second rear cover and a second side member comprising a side wall, a hinge portion including a hinge rotatably connecting the first housing and the second housing, a first wireless communication circuit configured to transmit and/or receive a first wireless signal of a first frequency band through a first conductive portion included in the first side member, and a second wireless communication circuit configured to transmit and/or receive a second wireless signal of a second frequency band through a second conductive portion included in the second side member. The first conductive portion includes a first contact portion electrically connected to the first wireless communication circuit. The second conductive portion includes a second contact portion electrically connected to the second wireless communication circuit. In a folded state of the foldable electronic device, the first conductive portion overlaps the second conductive portion in a direction orthogonal to the first rear cover. In the folded state of the foldable electronic device, the first contact portion and the second contact portion are not aligned with each other.

According to embodiments of the disclosure, a foldable electronic device includes: a first housing including a first rear cover and a first side member comprising a side wall, a second housing including a second rear cover and a second side member comprising a side wall, a hinge portion including a hinge rotatably connecting the first housing and the second housing, a first wireless communication circuit configured to transmit and/or receive a first wireless signal of a first frequency band through a first conductive portion included in the first side member, and a second wireless communication circuit configured to transmit and/or receive a second wireless signal of a second frequency band through a second conductive portion included in the second side member. The first conductive portion includes a first contact portion electrically connected to the first wireless communication circuit. The second conductive portion includes a second contact portion electrically connected to the second wireless communication circuit. In a folded state of the foldable electronic device, the first conductive portion overlaps the second conductive portion in a direction orthogonal to the first rear cover. In the folded state of the foldable electronic device, the first contact portion and the second contact portion are not aligned with each other.

An electronic device may be provided with peripheral conductive housing structures having a first segment and a second segment. First and second antenna feeds may be coupled between the first segment and the ground structures. The first feed may convey signals in a first band and the second feed may convey signals in a second band. The first segment may be near-field coupled to a slot between the second segment and the ground structures. A first tuner may be coupled between the second segment and the ground structures and may adjust a resonance of the first segment in the first and second bands. A second tuner coupled to the first feed may perform impedance matching in the first band and aperture tuning in the second band. A third tuner coupled to the second feed may perform impedance matching in the second band and aperture tuning in the first band.

An antenna apparatus is provided. The antenna apparatus includes a cavity element, a radiating element, and a feeding element. The cavity element includes an opening. The radiating element is located within the opening and disposed at a conductive layer. An outline of the radiating element and the opening form a surrounding slot. An imagining rectangle has four sides respectively abutted against an external outline of the surrounding slot. The feeding element is disposed at the same conductive layer. The feeding element includes a first section and a second section. A coupling distance is provided between the first section and the radiating element. A tail end of the first section is an open circuit. A shift distance is provided between the second section and a central line of the imagining rectangle.

Techniques are disclosed for configuring a broadband antenna system. An example electronic device includes a first antenna operating at a first frequency range and coupled to a first transceiver via a first signal path comprising a first indirect feed. The electronic device also includes a second antenna operating at a second frequency range and coupled to a second transceiver via a second signal path comprising a second indirect feed, wherein the first frequency range is lower than the first frequency range. The electronic device also includes a third antenna operating at the second frequency range and coupled to a third transceiver via a second signal path comprising a third indirect feed. Additionally, the first antenna is coupled to the first antenna and the second antenna by a capacitive coupling element.

Techniques are disclosed for configuring a broadband antenna system. An example electronic device includes a first antenna operating at a first frequency range and coupled to a first transceiver via a first signal path comprising a first indirect feed. The electronic device also includes a second antenna operating at a second frequency range and coupled to a second transceiver via a second signal path comprising a second indirect feed, wherein the first frequency range is lower than the first frequency range. The electronic device also includes a third antenna operating at the second frequency range and coupled to a third transceiver via a second signal path comprising a third indirect feed. Additionally, the first antenna is coupled to the first antenna and the second antenna by a capacitive coupling element.

Provided are an antenna assembly and an electronic device. The antenna assembly includes a first radiator, a second radiator, a first matching module, a first feeding module, a second matching module, and a second feeding module. The first radiator has a first ground end, a first coupling end, and a first feeding point. The second radiator has a second coupling end, a second ground end, and a second feed point. A first coupling gap is defined between the second coupling end and the first coupling end. The first matching module is electrically connected between the first feeding point and the first feeding module. The second matching module is electrically connected between the second feeding point and the second feeding module. The first radiator and the second radiator support multiple resonant modes, where at least one resonant mode is a to wavelength mode.

Provided are an antenna assembly and an electronic device. The antenna assembly includes a first radiator, a second radiator, a first matching module, a first feeding module, a second matching module, and a second feeding module. The first radiator has a first ground end, a first coupling end, and a first feeding point. The second radiator has a second coupling end, a second ground end, and a second feed point. A first coupling gap is defined between the second coupling end and the first coupling end. The first matching module is electrically connected between the first feeding point and the first feeding module. The second matching module is electrically connected between the second feeding point and the second feeding module. The first radiator and the second radiator support multiple resonant modes, where at least one resonant mode is a to wavelength mode.

There is provided a metal plate antenna transmitting and receiving wireless signals conforming to a prescribed communication standard, wherein an antenna width is designed to satisfy radiation resistance achieving a prescribed standing wave ratio in a resonant mode in which a loop length of the metal plate antenna is 1.5 wavelength of a wireless signal conforming to the prescribed communication standard.