Abstract: The present invention comprises systems and methods for cellular, PCS, GPS and/or Bluetooth mobile communication (e.g., a mobile telephone). The systems and methods employ a fully integrated dual band IFA/loop CDMA antenna for cellular and PCS communication. Fully integrating the CDMA antenna within a PWB provides for mitigation of lumped elements to establish dual banding, and can provide for reduced antenna size, device size, cost and interference form a user's hand. The IFA antenna is configured to transmit and receive within the cellular frequency band via a capacitive tap, and the loop antenna is configured to transmit and receive within the PCS frequency band via an impedance matching stub and ground location. The system and methods further employ a firewall to mitigate antenna coupling, and a metal reflector to reduce the electromagnetic reflection, and improve antenna gain and efficiency.

Abstract: The present invention comprises systems and methods for cellular, PCS, GPS and/or Bluetooth mobile communication (e.g., a mobile telephone). The systems and methods employ a fully integrated dual band IFA/loop CDMA antenna for cellular and PCS communication. Fully integrating the CDMA antenna within a PWB provides for mitigation of lumped elements to establish dual banding, and can provide for reduced antenna size, device size, cost and interference form a user's hand. The IFA antenna is configured to transmit and receive within the cellular frequency band via a capacitive tap, and the loop antenna is configured to transmit and receive within the PCS frequency band via an impedance matching stub and ground location. The system and methods further employ a firewall to mitigate antenna coupling, and a metal reflector to reduce the electromagnetic reflection, and improve antenna gain and efficiency.

Abstract: An antenna transducer assembly, and an associated method, for a mobile station, or other radio transducer. The antenna transducer assembly includes first and second antenna transducers disposed upon a substrate. The antenna transducers are elongated transmission lines and are of lengths to facilitate their transducing of radio signals that are generated to be of first and second frequency characteristics. The first antenna transducer includes a distal end part that defines an edge face surface. And, the second antenna transducer includes a distal end part such that a distal end part thereof is positioned in an orthogonal relationship to the edge face surface of the first antenna transducer.

Abstract: An antenna transducer assembly, and an associated method, for a mobile station, or other radio transducer. The antenna transducer assembly includes first and second antenna transducers disposed upon a substrate. The antenna transducers are elongated transmission lines and are of lengths to facilitate their transducing of radio signals that are generated to be of first and second frequency characteristics. The first antenna transducer includes a distal end part that defines an edge face surface. And, the second antenna transducer includes a distal end part such that a distal end part thereof is positioned in an orthogonal relationship to the edge face surface of the first antenna transducer.

Abstract: An antenna transducer, and an associated method, for a mobile station operable in a cellular communication system. The mobile station also includes GPS receive circuitry for receiving and operating upon GPS (global positioning system) signals. The antenna transducer includes a primary antenna transducer portion for transducing signals generated to effectuate a communication service in the cellular communication system. And, the antenna transducer includes a second antenna transducer portion for transducing GPS signals transmitted to the mobile station. The primary and second antenna transducer portions are disposed upon a common substrate, and the second antenna transducer portion exhibits circular polarization characteristics.

Abstract: An antenna assembly, and an associated method, for a radio device, such as a mobile terminal operable in a cellular communication system. The antenna assembly includes an active antenna element and at least a parasitic element. The active antenna element is of a selected lengthwise dimension and is resonant, in isolation, at a first resonant frequency. The parasitic antenna element is positioned proximate to the active antenna element and separated therefrom by a selected separation distance. The selected separation distance is determinative of a reduction in frequency at which the active antenna element is resonant. Thereby, for a given length, the resonant frequency of the active antenna element is reduced, permitting the lengthwise dimensional requirements of the antenna transducer of which the active antenna element is formed to be reduced relative to conventional antenna transducers.

Abstract: An antenna transducer, and an associated method, for a mobile station operable in a cellular communication system. The mobile station also includes GPS receive circuitry for receiving and operating upon GPS (global positioning system) signals. The antenna transducer includes a primary antenna transducer portion for transducing signals generated to effectuate a communication service in the cellular communication system. And, the antenna transducer includes a second antenna transducer portion for transducing GPS signals transmitted to the mobile station. The primary and second antenna transducer portions are disposed upon a common substrate, and the second antenna transducer portion exhibits circular polarization characteristics.

Abstract: An antenna assembly, and an associated method, for a radio device, such as a portable mobile station. The antenna assembly includes a TOPIFA (Top-Mounted Inverted F-Antenna) transducer coupled to a substrate, such as a printed circuit board. The dimensions of the substrate are selected such that the geometric mean of the widthwise and lengthwise dimensions thereof define a geometric mean which correspond to the resonant length at which the mobile station, or radio device, is to be operated.

Abstract: An antenna assembly for an electronic device where an antenna element has a compact length, the compact length is less than continuous length of the antenna element and, the antenna assembly functions as an Inverted F-antenna (IFA) to exhibit circular polarization.

Abstract: An antenna assembly, and an associated method, for a mobile phone operable in a cellular, or other radio, communication system. The antenna assembly causes shifting of an antenna beam pattern exhibited by an antenna transducer to cause formation of the resultant antenna beam pattern which is of a configuration better to facilitate the effectuation of communications with the mobile phone.

Abstract: A retractable whip antenna incorporating a matching base loading helix for use in mobile communications devices is disclosed. The antenna functions without the use of a matching circuit since selection of the radiating elements provides a constant input impedance to the transceiver circuitry. The resulting antenna provides excellent gain over the PCS frequency band, low SAR values, circuit design flexibility and low cost. In a preferred embodiment, the retractable whip is comprised of a radiating element with an electrical length of 1/2 wavelength and having a first end attached to a conductive spring contact. The base loading helix comprises a radiating helical element with an electrical length of 1/4 wavelength and having a first end connected to a mobile transceiver circuit and a second end comprising a conductive capturing coil. The radiating whip element is constrained within the coil of the helical element and is freely moveable to an extended or a retracted position.