An antenna having a broad bandwidth and a high radiation efficiency is provided. The antenna includes a conductor, and a dielectric substrate disposed on the conductor. The antenna further includes a slot portion formed on the dielectric substrate, and a cavity formed in the dielectric substrate that corresponds to the slot portion.

An antenna includes a feed element, a ground element, and a slot therebetween. The feed element includes a feed end wall and first and second feed side walls extending from the feed end wall at first and second corners. The ground element includes a ground end wall and first and second ground side walls at first and second corners. The slot includes a first slot portion between the first feed and ground side walls, a second slot portion between the second feed and ground side walls, and a third slot portion between the feed and ground end walls. The third slot portion is continuous between the first slot portion and the second slot portion.

An antenna includes a feed element, a ground element, and a slot therebetween. The feed element includes a feed end wall and first and second feed side walls extending from the feed end wall at first and second corners. The ground element includes a ground end wall and first and second ground side walls at first and second corners. The slot includes a first slot portion between the first feed and ground side walls, a second slot portion between the second feed and ground side walls, and a third slot portion between the feed and ground end walls. The third slot portion is continuous between the first slot portion and the second slot portion.

In one embodiment, an apparatus is formed using a quarter wave (QW) patch element with a U-Slot, a ground plane, and a slotted shorting wall. A feed line runs through the ground plane and connects to the QW patch element. The slotted shorting wall connects the QW patch element to the ground plane. The QW patch element, slotted shorting wall, and ground plane are composed of a single contiguous folded material.

In one embodiment, an apparatus is formed using a quarter wave (QW) patch element with a U-Slot, a ground plane, and a slotted shorting wall. A feed line runs through the ground plane and connects to the QW patch element. The slotted shorting wall connects the QW patch element to the ground plane. The QW patch element, slotted shorting wall, and ground plane are composed of a single contiguous folded material.

A device for signal generation including a unit cell. The unit cell contains two oscillators that are coupled in phase. Each oscillator operates at a fundamental frequency. Each oscillator further includes a slot structure, and the slot structures serve as, at a third harmonic of the fundamental frequency, a slot antenna radiating a third harmonic power. If the device contains multiple unit cell, then each unit cell is horizontally coupled out-of-phase and vertically in-phase with adjacent cells at the fundamental frequency in the device. Therefore, coherent radiation and power combining are achieved at the third harmonic.

A device for signal generation including a unit cell. The unit cell contains two oscillators that are coupled in phase. Each oscillator operates at a fundamental frequency. Each oscillator further includes a slot structure, and the slot structures serve as, at a third harmonic of the fundamental frequency, a slot antenna radiating a third harmonic power. If the device contains multiple unit cell, then each unit cell is horizontally coupled out-of-phase and vertically in-phase with adjacent cells at the fundamental frequency in the device. Therefore, coherent radiation and power combining are achieved at the third harmonic.

A system according to one embodiment includes a phased array antenna comprising a plurality of antenna elements, the plurality of antenna elements configured in a planar array, wherein each of the plurality of antenna elements generates a beam pattern directed at an angle out of the plane of the planar array; and driver circuitry coupled to each of the plurality of antenna elements, wherein the driver circuitry comprises a plurality of transceivers, the plurality of transceivers configured to provide independently adjustable phase delay to each of the plurality of antenna elements.

A system according to one embodiment includes a phased array antenna comprising a plurality of antenna elements, the plurality of antenna elements configured in a planar array, wherein each of the plurality of antenna elements generates a beam pattern directed at an angle out of the plane of the planar array; and driver circuitry coupled to each of the plurality of antenna elements, wherein the driver circuitry comprises a plurality of transceivers, the plurality of transceivers configured to provide independently adjustable phase delay to each of the plurality of antenna elements.

An antenna component for use in an antenna of electronic equipment, includes: a fastening part configured to connect with a metal plate in the electronic equipment, to make the metal plate serve as a part of the antenna component; and a radiator part connected to the fastening part and configured to generate antenna resonances in at least one frequency band.