摘要:
An apparatus, system, and method manage a transmission antenna system by measuring an antenna performance indicator of an alternate antenna configuration during a reduced data rate transmission. After an antenna performance indicator is measured in a current (first) antenna system configuration, the antenna system is configured to an alternate (second) configuration during a reduced data rate transmission and the antenna performance indicator of the alternate (second) configuration is measured. The antenna performance indicators for both configurations are evaluated to determine the optimum antenna system configuration for transmission. If the alternate (second) configuration will result in decreased performance, the antenna system is changed back to the first antenna system configuration. Otherwise, the alternate (second) configuration is defined as the current configuration and the first antenna configuration is evaluated during reduced rate transmissions.
摘要:
Architectures and implementations of a transceiver system for wireless communications are presented, the system including one or more antennas supporting a single frequency band or multiple frequency bands, a transmit circuit, a receive circuit, and an isolation circuit that is coupled to the one or more antennas and the transmit and receive circuits and provides adequate isolation between the transmit circuit and the receive circuit.
摘要:
Apparatus, systems and techniques for using composite left and right handed (CRLH) metamaterial (MTM) structure antenna elements and arrays to provide radiation pattern shaping and beam switching.
摘要:
An electrical connector with a frequency-tuned groundplane is disclosed. The connector includes a signal medium to communicate an electrical signal and a frequency-tuned groundplane medium to communicate a reference voltage (i.e., ground). The groundplane medium differentially supplies the reference voltage to the groundplane second end, responsive to the frequency of the electrical signal. In one aspect, the first groundplane layer conductive trace includes a transmission line pattern, and the second groundplane layer conductive trace is connected to the first groundplane layer conductive trace through a plurality of conductive vias. For example, the first groundplane layer may include a plurality of conductive patches, some of which have a via connection to the second groundplane layer conductive trace.
摘要:
An electrical connector with a frequency-tuned groundplane is disclosed. The connector includes a signal medium to communicate an electrical signal and a frequency-tuned groundplane medium to communicate a reference voltage (i.e., ground). The groundplane medium differentially supplies the reference voltage to the groundplane second end, responsive to the frequency of the electrical signal. In one aspect, the first groundplane layer conductive trace includes a transmission line pattern, and the second groundplane layer conductive trace is connected to the first groundplane layer conductive trace through a plurality of conductive vias. For example, the first groundplane layer may include a plurality of conductive patches, some of which have a via connection to the second groundplane layer conductive trace.
摘要:
A multiband planar inverted F antenna (PIFA) can provide improved performance and operating efficiency, and utilizes a capacitive element configured to provide high efficiency operation, and a tuning area that allows the antenna to be tuned independently of the capacitive element. As a result of this feature, the antenna can be tuned to the desired operating frequencies, while allowing the capacitive element to remain configured for optimal operating efficiency. The antenna can be configured in a loop for effective utilization of a given volume and can therefore be relatively small in size and high efficiency. A capacitive loading section can be included to allow improved antenna efficiency and radiation. Additionally, tuning section can be provided to allow the antenna to be tuned without adjusting the capacitive loading section. To obtain operation at an additional frequency band, a parasitic element or a slot configuration can be included.
摘要:
A retractable stubby antenna is movable relative to a housing along a longitudinal axis. In a retracted position, at least a portion of the retractable stubby antenna is positioned within the housing. In an extended position at least a portion of the retractable stubby antenna is positioned outside of the housing such that a greater portion of the antenna is positioned outside the housing in the extended positioned than in the retracted position. A radiating helical element is connected to device circuitry through a connection interface including an antenna interface and a housing connection interface.
摘要:
A meander line capacitively-loaded magnetic dipole antenna is disclosed. The antenna includes a transformer loop having a balanced feed interface, and a meander line capacitively-loaded magnetic dipole radiator. The meander line capacitively-loaded magnetic dipole radiator also includes an electric field bridge. For example, the meander line capacitively-loaded magnetic dipole radiator may include a quasi loop with a first end and a second end, with the electric field bridge interposed between the quasi loop first and second ends. The electric field bridge may be an element such as a dielectric gap, lumped element, circuit board surface-mounted, ferroelectric tunable, or a microelectromechanical system (MEMS) capacitor. The transformer loop has a radiator interface coupled to a quasi loop transformer interface. In one aspect, the coupled interfaces are a shared perimeter portion shared by both loops.
摘要:
A wireless communication device is provided having an infrared transducer integrated on certain components. If the wireless communication device has an external antenna, the infrared transducer may be positioned at the tip of the antenna; if the wireless communication device has a clam-shell construction, the infrared transducer may be positioned within the hinge structure. In either position, the infrared transducer can establish line-of-sight connectivity and fill a space previously considered unusable for functional components.
摘要:
A multiband planar inverted F antenna (PIFA) can provide improved performance and operating efficiency, and utilizes a capacitive element configured to provide high efficiency operation, and a tuning area that allows the antenna to be tuned independently of the capacitive element. As a result of this feature, the antenna can be tuned to the desired operating frequencies, while allowing the capacitive element to remain configured for optimal operating efficiency. The antenna can be configured in a loop for effective utilization of a given volume and can therefore be relatively small in size and high efficiency. A capacitive loading section can be included to allow improved antenna efficiency and radiation. Additionally, tuning section can be provided to allow the antenna to be tuned without adjusting the capacitive loading section. To obtain operation at an additional frequency band, a parasitic element or a slot configuration can be included.