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Patent Searching and Data


Matches 251 - 300 out of 2,790

Document Document Title
WO/2008/020945A2
A transmission line resonator loop antenna includes a transmission line resonator for receiving an input excitation signal and producing a predetermined resonant output signal which is substantially phase reversed relative to the input e...  
WO/2007/100678A3
Embodiments of methods, transceiver circuits, and systems can compensate an IQ mismatch (e.g., Tx or Rx) or a carrier leakage using a plurality of local oscillators. One embodiment of a transceiver can include a first up-conversion IQ mi...  
WO/2008/016364A2
A cryogenic vacuum rf feedthrough device comprising: 1) a probe for insertion into a particle beam; 2) a coaxial cable comprising an inner conductor and an outer conductor, a dielectric/ insulating layer surrounding the inner conductor, ...  
WO/2008/014990A1
The invention relates to an antenna, in particular a mobile radio antenna for vehicles, wherein the antenna has a connection part (3) and reception means, in particular a helical antenna coil (7), which are surrounded by casing material ...  
WO/2008/014029A2
Methods and apparatus are provided to enable a transceiver (200) or transmitter including a single PA line-up (210) to transmit signals having frequencies in two or more different frequency bands, and/or having two or more different modu...  
WO/2008/008176A2
A supply voltage controlled power amplifier includes a power amplifier, a closed power control loop configured to generate a power control signal, and a voltage regulator coupled to the power control loop, the voltage regulator including...  
WO/2008/008904A1
A quadrifilar helix antenna used to transmit and receive wireless signals may include a number of inductively loaded antenna elements. The antenna elements may be helically wound around a cylindrical structure.  
WO/2008/003993A1
An antenna arrangement for use in an ultra-wideband network comprises a plurality of active monopoles. Each monopole is oriented substantially perpendicular to a ground plane, and arranged in a row along a transmission axis. Each monopol...  
WO/2008/002704A2
A system (100) and method (300) of feedback transmitter power control can include a transmitter temperature detector such as a thermistor based temperature detector (118), a detector for detecting forward and reflected transmitter power ...  
WO2005013536A8
A method for outer loop power control in a wireless communication system begins by determining if a cyclic redundancy check (CRC) is available. If the CRC is available, the method uses the CRC to calculate an adjustment for a target sign...  
WO/2006/127624A3
A network for power transmission to a receiver that converts the power into current includes a first node for transmitting power wirelessly in a first area. The first area has a minimum electric or magnetic field strength. The network in...  
WO/2007/092233A3
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The...  
WO/2006/113884A3
A process (Fig. 6) for secure, safe, and easy provisioning of a wireless device with credentials to connect to a wireless network. A connecting wireless device and an established wireless device both utilize low power transmission at clo...  
WO/2007/143616A2
An antenna for a communications device having configurable elements controlled to modify an antenna impedance and/or an antenna resonant frequency to improve performance of the communications device. The antenna impedance is controlled t...  
WO/2007/092195A3
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The...  
WO/2007/082201A3
Improved carrier feed thru rejection is achieved for a linear amplifier in a transmitter (100). The DC training capabilities of a radio frequency mixer are used (202), not only to correct DC offset of the radio frequency mixer, but also ...  
WO/2007/143246A2
An RF transmitter (30) includes an RF power amplifier (32) for which the power input bias voltage (40) and signal input bias voltage (80) are controlled within feedback loops. A peak detector (44) generates a lowered-spectrum, peak-track...  
WO/2005/101687A3
Method and apparatus for retrofitting wireless devices to control a direction-agile antenna. Alternative solutions include pulse code modulating either the RF signal or a DC bias applied to the RF signal or by applying a PCM signal to th...  
WO2006079114A8
Method and apparatus for providing EMC Class-B compliant RF transmission for a data monitoring and detection system having a sensor for detecting one or more glucose levels, a transmitter configured to transmit a respective signal corres...  
WO/2007/092794A3
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The...  
WO/2007/133262A2
An apparatus and technique for extracting information carried in higher eigenmodes or harmonics of an oscillating cantilever or other oscillating sensors in atomic force microscopy and related MEMs work is described.  
WO/2006/102135A3
An antenna arrangement (10) including a first antenna module (12) having a first antenna loop (14) positioned in a plane for emitting a signal in a first spatial area (16), and at least one additional antenna loop (18) positioned in subs...  
WO/2007/133246A2
An efficient high-temperature water vapor generator is used to heat heavy oil located in an underground cavity, thereby reducing the viscosity of the oil and enabling the oil to be pumped to the surface. The vapor generator includes a co...  
WO/2007/133244A2
The present invention is directed to a mobile platform for the delivery of bulk explosives to a blast hole. One embodiment of the platform provides the ability to obtain weight information relating to the contents of a tank that is assoc...  
WO/2007/132161A1
An antenna system for operation at frequencies in excess of 200MHz, comprises an antenna, a transmission line and a receiver stage, the transmission line electrically connecting the antenna to an input of the receiver stage, and the ante...  
WO/2007/122614A2
An antenna (10), consisting of a folded looped conductor (24) closed at a feedpoint (22). The antenna has at least two conductive arms (12, 14) extending from the feedpoint.  
WO/2006/094159A3
A small number of transmissions are performed at a sufficient number of frequencies and power levels so that a correlation between frequency, measured power, and detector values is established. Once a correlation is established, the wire...  
WO/2007/116623A1
A highly sensitive antenna coil is provided by increasing the length of a core or increasing the winding number of a coil or increasing the length of the coil, without increasing the sizes of the antenna coil. An antenna coil (10) is pro...  
WO/2007/028061A3
An EAS system comprises a central circuit for sequentially generating signal bursts. At least one local transmitting antenna is positioned remote from the central circuit for receiving and propagating the signal bursts into an interrogat...  
WO/2007/104568A1
The invention relates to an improved rod antenna characterised by the following features: an antenna base (3); a radiating element (9) held over the antenna base (3) and comprising a coil arrangement consisting of an antenna conductor (9...  
WO/2007/100678A2
Embodiments of methods, transceiver circuits, and systems can compensate an IQ mismatch (e.g., Tx or Rx) or a carrier leakage using a plurality of local oscillators. One embodiment of a transceiver can include a first up-conversion IQ mi...  
WO/2007/092195A2
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The...  
WO/2007/092794A2
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The...  
WO/2007/092233A2
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The...  
WO/2007/051931A3
The invention relates to producing miniaturised or nondirectional antennas used in particular in a user remote control context. The general principle of said invention is to make it possible to use as a base a helical antenna operating i...  
WO/2006/087711A3
The present invention seeks to provide a multiple monopole antenna including a looped conductor (10) having at least two conductive arms (12, 14) extending therefrom and a common feed point (16) located on the loop conductor.  
WO/2007/058620A1
An antenna for radio frequency identification is disclosed. The antenna comprises a first radiating element having at least one loop element and a second radiating element spatially displaced from the first radiating element and having a...  
WO/2007/056088A2
An indication is received to relocate leakage in a transmission signal to be transmitted. A frequency change associated with relocating the leakage in the transmission signal is obtained. The leakage in the transmission signal is relocat...  
WO/2004/059787A3
A dual band/dual mode meander line antenna which include a ground plane (10), and a pair of substantially vertical radiating surface elements (12, 14) disposed substantially parallel to one another and perpendicular to ground plane. A ge...  
WO/2007/056137A2
A transmit amplifier stage operable to amplify a transmit signal comprises power amplifiers and switches. The power amplifiers include at least one fractional power amplifier operable to provide fractional power to amplify the transmit s...  
WO/2007/051931A2
The invention relates to producing miniaturised or nondirectional antennas used in particular in a user remote control context. The general principle of said invention is to make it possible to use as a base a helical antenna operating i...  
WO/2007/050519A2
An apparatus for converting power includes at least one impedance matching network which receives an electrical signal. The apparatus includes at least one AC to DC converter in communication with the impedance matching network. Also dis...  
WO/2007/040826A2
A method (200) and circuit (100) for substantially maintaining an amplified constant envelope modulation signal at a constant pre-defined amplitude. The circuit (100) comprises a constant envelope modulation providing circuitry (104), a ...  
WO/2007/041058A2
A circuit for adjusting a magnitude of a transmit signal includes a transmitter (105), providing a transmit signal (107). It also includes a transmitter amplifier (109), receiving the transmit signal (107) and a power control adjustment ...  
WO/2007/034137A1
A mobile communication device has an antenna assembly comprising the combination of an inverted-F antenna and a dielectrically-loaded quadrifilar helical antenna, the latter mounted on the distal end of an elongate radiator element of th...  
WO/2007/033407A1
A portal antenna (10) particularly suited for enabling low frequency RFlD devices carried by animals to be read when animals are proceeding through a stock race or the like. The portal antenna includes a portal structure (11) through whi...  
WO/2007/033961A1
The invention concerns a wideband antenna system comprising at least one first antenna (1) operating in high frequencies, BPs frequency band, covering long distances and a second antenna (2) operating in low frequencies, BPb frequency ba...  
WO/2007/035064A1
The present invention relates in general, to a chip antenna and, more particularly, to a dual-band small- sized chip antenna, in which a first antenna element, including a plurality of coil members, is coupled with a second antenna eleme...  
WO/2007/033343A2
Systems and methods for an RF nulling scheme are provided. An RF nulling scheme can minimize the level of unwanted RF signal reflections entering the receiver without attenuating the desired signal response from an RFID tag. In one aspec...  
WO/2007/018696A1
An apparatus (101) performs power control for an air interface transmission between a receiver (105) and a transmitter (103). The apparatus (101) comprises a power control processor (113) which operates a power control loop for the air i...  

Matches 251 - 300 out of 2,790