Abstract: An antenna mountable to a window to provide non-destructive installation and removal therefrom. The antenna has a substrate of dielectric material having a first surface with patterned conductive material providing a main radiator and ground plane, and a back surface of patterned conductive material providing a feeding circuit, which capacitively conveys and receives, via the substrate, RF signals with the main radiator and ground plane. The main radiator and ground plane, and preferably the feeding circuit, are each radiating structures to achieve different frequency ranges, such as over VHF, UHF, and cellular bands, with wideband performance. The antenna is configured to resemble a semitransparent sunshade by the antenna body being perforated, through the front and back thereof, with holes enabling a majority of the antenna body to appear semitransparent for screening sunlight. One or more fixtures are utilized for detachably mounting the antenna along a surface of a window.

Abstract: In some aspects, a portable electronic device having a slidable upper housing and rear housing movable between an open position and a closed position, and a gain adjustment module. The gain adjustment module reduces the RF energy produced by the portable electronic device when the device is in the open position to ensure that the portable electronic device complies with Hearing Aid Compatibility (HAC) standards.

Abstract: In some aspects, a portable electronic device, having a rear housing, an upper housing coupled to the rear housing and slideable relative thereto between a closed position and an open position, an antenna, and at least one element coupled to the antenna and configured to perform at least one of inhibiting low frequency shift and increasing high frequency sensitivity of the antenna.

Abstract: In some aspects, a portable electronic device, having a rear housing, an upper housing coupled to the rear housing and slideable relative thereto between a closed position and an open position, an antenna, and at least one element coupled to the antenna and configured to perform at least one of inhibiting low frequency shift and increasing high frequency sensitivity of the antenna.

Abstract: In some aspects, a portable electronic device, having a rear housing, an upper housing coupled to the rear housing and slideable relative thereto between a closed position and an open position, an antenna, and at least one element coupled to the antenna and configured to perform at least one of inhibiting low frequency shift and increasing high frequency sensitivity of the antenna.

Abstract: In some aspects, a portable electronic device having a slidable upper housing and rear housing movable between an open position and a closed position, and a gain adjustment module. The gain adjustment module reduces the RF energy produced by the portable electronic device when the device is in the open position to ensure that the portable electronic device complies with Hearing Aid Compatibility (HAC) standards.