Abstract: The performance of a dual band meanderline antenna is improved with the addition of a conductive patch. It is well known that a meanderline antenna will have various resonances. A conductive patch capacitively coupled to the meanderline broadens and move the second resonance frequency. Connecting the conductive patch to a coherent power source causes additional bandwidth enhancements.

Abstract: The performance of a dual band meanderline antenna is improved with the addition of a conductive patch. It is well known that a meanderline antenna will have various resonances. A conductive patch capacitively coupled to the meanderline broadens and move the second resonance frequency. Connecting the conductive patch to a coherent power source causes additional bandwidth enhancements.

Abstract: An antenna for wireless communication devices provides resonance over at least two frequency bands with a directional radiation pattern and reduced specific absorption rate (SAR). The antenna structure includes of a formed conducting plate resonator spaced from a larger substantially rectangular ground plane conductor. The antenna structure can be located near one end of ground plane conductor. Single feed and ground connections are provided on adjacent edges of the resonator. Two or more tuning capacitors cause the resonator to resonate over two or more frequency ranges. Tuning of the higher frequency band may be done without affecting the lower frequency band in the case of a dual band version. The sizes and shape of the resonator and ground plane are compatible with the dimensions of wireless communications devices such as cell phones.

Abstract: The present invention discloses a novel PIFA-edge antenna and diversity antenna system operable over a wide range of conditions and exhibiting superior performance as part of a wireless LAN environment. The antenna of the present invention provides reliable and consistent omnidirectional performance while reducing the deleterious effects of multipath propagation interference which is often present in office environments having a variety of surfaces that passively reflect a broad range of frequencies useful within the broad spectrum the electromagnetic radiation (e.g., radio frequency or “RF”) for transmitting analog or digital voice, data, images, and the like (herein “data”) typically transmitted across the typical LAN.

Abstract: An antenna for wireless communication devices provides resonance over at least two frequency bands with a directional radiation pattern and reduced specific absorption rate (SAR). The antenna structure includes of a formed conducting plate resonator spaced from a larger substantially rectangular ground plane conductor. The antenna structure can be located near one end of ground plane conductor. Single feed and ground connections are provided on adjacent edges of the resonator. Two or more tuning capacitors cause the resonator to resonate over two or more frequency ranges. Tuning of the higher frequency band may be done without affecting the lower frequency band in the case of a dual band version. The sizes and shape of the resonator and ground plane are compatible with the dimensions of wireless communications devices such as cell phones.

Abstract: A dual frequency wideband antenna assembly for use in a wireless communication device. The antenna assembly having a first resonator element disposed away from the ground plane element, said first resonator element being operatively coupled at a first location to the ground plane and being operatively coupled at a second location to the RF signal port; a second resonator element disposed away from the ground plane. The first and second resonator elements are coupled via a bridge conductor and a capacitive tuning network. The capacitive tuning network may include a discrete capacitor or an adjustable capacitor which varies in response to a signal.