This disclosure is directed to broadband notch antennas. In one aspect, a notch antenna includes a dielectric plate having a first surface and a second surface located opposite the first surface. A conductive layer is disposed on the first surface and has a notch region that exposes the dielectric plate between edges of the conductive layer. The antenna also includes two or more frequency matching circuits that branch from the notch region. Each matching circuit is configured to send and receive electromagnetic radiation in a frequency band of a radio spectrum.

A wireless sensor includes an antenna, a sensing element, a tuning circuit, a processing module, a reference circuit block, and a transmitter. The tuning circuit adjusts the RF front-end to compensation for a change in a characteristic of the RF front end caused by the sensing element. The reference circuit block generates a signal based on a low voltage low frequency input that corresponds to a second environmental condition. The processing module generates a first digital value based on the adjustment to the RF front-end, where the first digital value is a representation of the first environmental condition, and generate a second digital value based on the signal, where the second digital value is a representation of the second environmental condition. The transmitter generates the outbound RF signal that includes at least one of the first and second digital values.

A wireless sensor includes an antenna, a sensing element, a tuning circuit, a processing module, a reference circuit block, and a transmitter. The tuning circuit adjusts the RF front-end to compensation for a change in a characteristic of the RF front end caused by the sensing element. The reference circuit block generates a signal based on a low voltage low frequency input that corresponds to a second environmental condition. The processing module generates a first digital value based on the adjustment to the RF front-end, where the first digital value is a representation of the first environmental condition, and generate a second digital value based on the signal, where the second digital value is a representation of the second environmental condition. The transmitter generates the outbound RF signal that includes at least one of the first and second digital values.

A multi-band antenna having an aperture tuner is disclosed. The multi-band antenna may simultaneously transmit a first radio frequency (RF) signal and a second RF signal. The aperture tuner may modify a resonant frequency associated with one or more antenna elements of the multiband antenna in accordance with the first RF signal or the second RF signal. One or more of the antenna elements of the multi-band antenna may be disposed above and/or substantially parallel to other antenna elements. In some exemplary embodiments, an air gap may be formed between one or more antenna elements.

A multi-band antenna having an aperture tuner is disclosed. The multi-band antenna may simultaneously transmit a first radio frequency (RF) signal and a second RF signal. The aperture tuner may modify a resonant frequency associated with one or more antenna elements of the multiband antenna in accordance with the first RF signal or the second RF signal. One or more of the antenna elements of the multi-band antenna may be disposed above and/or substantially parallel to other antenna elements. In some exemplary embodiments, an air gap may be formed between one or more antenna elements.

A wireless device such as a mobile device comprises a metal frame antenna (MFA) solution developed to cover the multiple range of frequencies required in the wireless device. An MFA includes a ground plane layer, at least a single-strip metal frame element spaced apart from an edge of the ground plane layer, and at least a feeding system that connects the at least one single-strip metal frame element to an RF transceiver of the wireless device.

A combination antenna includes a conductive block having at least one electrical component mounted on the surface. A metallic housing is connected to the conductive block via at least one electronic element having a front surface and a rear surface. The front surface includes one or more plates separated by gaps of a predetermined width. The rear surface includes a continuous plate separated from the front surface by a gap of a second predetermined width. One or more antenna feeds are disposed between the front surface and the rear surface of the metallic housing and are connected to the metallic housing directly or via the at least one electronic element. A grounding plane includes one or more grounding points connected to the front surface and the rear surface directly or via the at least one electronic element.

An electronic device is provided. The electronic device includes a housing, a communication circuit disposed on one side of the housing, a multi-layered printed circuit board (PCB) disposed on one side of the housing and electrically connected to the communication circuit and an antenna radiator disposed on one side of the housing or defining at least a portion of an outer surface of the housing, and is electrically connected to the communication circuit and the multi-layered printed circuit board, wherein the multi-layered printed circuit board comprises a first conductive pattern disposed in at least one of a plurality of layers thereof to form a capacitance, a second conductive pattern disposed in at least another one of the plurality of layers thereof to form an inductance and a conductive plate disposed between the at least one and the at least other one of the plurality of layers and is electrically isolated from the first conductive pattern and the second conductive pattern.

Adaptive tunable antenna system includes a first radiating element having an elongated length and a second radiating element extending from a distal end of the first radiating element. The first radiating element is for a high band of operation and the second radiating element is for a low-band of operation. The second radiating element is a helical member including a plurality of turns. A low-band circuit selectively bypasses one or more of the turns of the second radiating element in response to a control signal.

Adaptive tunable antenna system includes a first radiating element having an elongated length and a second radiating element extending from a distal end of the first radiating element. The first radiating element is for a high band of operation and the second radiating element is for a low-band of operation. The second radiating element is a helical member including a plurality of turns. A low-band circuit selectively bypasses one or more of the turns of the second radiating element in response to a control signal.