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Patent Searching and Data


Matches 301 - 350 out of 2,819

Document Document Title
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...  
WO/2007/018849A2
A phase rotator (42) for a Cartesian feedback power amplifier (32) in a transmitter final stage (13) contains an Integrated voltage controlled tunable resonant circuit (88) accomplishing band-pass filtering (80) at a center frequency sel...  
WO/2006/073623A3
In the present technique for managing power of a transmitter on a mobile station, the transmitter power is checked (124) against a training current threshold that can result in the termination of a training ramp during level training mod...  
WO/2007/004932A1
The invention discloses a repeater antenna (130, 200) for use in point-to-point applications in telecommunications systems in the microwave range, intended for connecting transmissions from a first radio unit (110) at a first site to a s...  
WO/2006/136810A1
A dielectrically-loaded helical antenna has a cylindrical ceramic core bearing metallised helical antenna elements which are coupled to a coaxial feeder structure passing axially through the core. Secured to the end face of the core is a...  
WO/2006/138032A2
The present invention is related to a method and system for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission an...  
WO/2006/138021A2
The present invention is related to a method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver compris...  
WO/2006/136809A1
A dielectrically-loaded helical antenna has a cylindrical ceramic core bearing metallised helical antenna elements which are coupled to a coaxial feeder structure passing axially through the core. Secured to the end face of the core is a...  
WO/2006/127714A2
A supply voltage controlled power amplifier that comprises a power amplifier, a closed power control feedback loop configured to generate a power control signal, and a dual voltage regulator coupled to the power control feedback loop, th...  
WO/2006/127115A1
A radio transmitter arrangement (100), e.g. for a base station of a cellular communication system, comprises a power amplifier (103) for generating a radio frequency signal to be radiated from an antenna (105). A power supply means (107,...  
WO/2006/116741A2
A radio frequency power amplifier and corresponding methods are arranged and configured to drive a resonant load with an output signal that includes AM or complex modulation from an input signal. The amplifier includes: a radio frequency...  
WO/2006/115707A2
An internal calibration system for a radio frequency (RF) transmitter comprises a digital processing element to generate within a radio frequency (RF) transmitter test points at which an output of the RF transmitter is measured, an RF de...  
WO/2006/116743A2
A radio frequency power amplifier and corresponding method is arranged and configured to drive a resonant load. The radio frequency power amplifier includes a radio frequency switching stage with an output that is coupled to a resonant c...  
WO2006088600A3
A microradio (10) is provided with a hysteretic switch (16) to permit an optimum range increasing charging cycle, with the charging cycle beling long relative to the transmit cycle. Secondly, an ensemble of microradios permits an n2 powe...  
WO/2006/110451A2
A rapid and inexpensive process for increasing the amount of hydrocarbons (e.g., oil) produced and the rate of production from subterranean hydrocarbon-bearing reservoirs by displacing oil downwards within the oil reservoir and into an o...  
WO/2006/109663A1
An antenna device is provided with a power supplying section, a first antenna element, a second antenna element and a film. The first antenna element includes a first feed line connected with the power supplying section, and a plurality ...  
WO/2006/107690A2
Dynamic gain and phase compensation is provided in a radio frequency (RF) receiver (106) including at least one switched Low Noise Amplifier (LNA) (212) coupled to an RF gain control unit (226) providing a gain control signal to the at l...  
WO/2006/107841A2
Methods and apparatus are provided for gain and phase compensation in a radio frequency (RF) transmitter (108). The RF transmitter (108) has at least one power amplifier (PA) (205)for providing a transmitted signal having a signal power ...  
WO2006086194A3
The multi-band antenna structure (fig. 2) includes a first antenna (10) having a band width about a middle frequency and a second antenna (12) spaced and electrically isolated from the first antenna. Ends of the second antenna (12) are s...  
WO/2006/102135A2
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/2006/100440A1
In a dielectrically-loaded quadrifilar antenna for operation with circularly polarised signals, four coextensive composite helical elements are plated on the outer surface of a cylindrical dielectric core (12), each composite element com...  
WO/2006/098791A2
The device includes a first antenna (ANT1) that is coupled to a first transmit/receive switch (SW1), which is in turn coupled to a first transmitter (TXTR1) and a first receiver (RCVR1) in response to a first control signal (TX1/RX1N). A...  
WO/2006/098891A2
A method is provided for transmitting data. A first device (121) generates a first signal (320) having a first duty cycle, comprising a first gated-on portion (323) and a first gated-off portion (326) a time slot (260); and a second devi...  
WO/2006/096402A2
A log periodic dipole antenna in which some, or preferably all, of the mechanical attachments do not include metal-to-metal contact points. In particular, the antenna elements, which are cantilevered from a ground plate, are mechanically...  
WO/2006/094159A2
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/2006/078658A1
This invention relates to structures which display negative magnetic permeability in response to a relatively broad range of wavelengths.This invention further relates to manufacture of negative magnetic permeability or negative electric...  
WO/2006/079114A2
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...  
WO2004099812A3
A system, method, and computer program product for automatically exchanging objects (1906) in a wireless mobile environment. The invention operates by transmitting a request for objects (1906) to a source (1908), receiving at least some ...  
WO/2006/061085A1
An antenna (425, 525) for a wireless terminal can include an antenna configured to be removably coupled to the wireless terminal and configured for display of digital video broadcast data based on received DVB-H compliant signals.  
WO/2006/059568A1
An antenna device which can provide a high gain by a small and flat constitution and can switch main beam directions. On a same flat plane, rhombic antenna sections composed of sections (101a-101d, 102a-102d, 103a-103d) are arranged, and...  
WO/2006/051257A1
A dielectrically loaded backfire helical antenna has a cylindrical ceramic core (12) and a feed structure which passes axially through the core to a distal end face of the core where it is connected to helical conductors (10A - 10D) loca...  
WO/2006/051947A1
A circularly polarized antenna comprises a dielectric substrate, a base conductor joined to one side of the dielectric substrate, a circularly polarized antenna element formed on the opposite side of the dielectric substrate, metal posts...  
WO/2006/045769A1
The invention relates to a helical antenna comprising at least one helix which is formed by at least two radiating conductive strands (201,202), wherein at least one of said conductive strands (201,202) extends into at least two sub-stra...  
WO2005022740A3
An RF power amplifier module can be used without a matching device between the power amplifier module and an antenna. The power amplifier module is constructed and operated to detect, protect and maintain the performance of the power amp...  
WO/2006/037990A1
A unitary feed structure for sliding installation in a passage in the insulative core of a dielectrically-loaded antenna comprises the unitary combination of a tubular outer shield conductor and elongate inner conductor which extends thr...  
WO/2006/039109A2
A system for current efficient dynamic power range control in a transmitter lineup (10) can include a switched mixer (18) coupled to a switched step attenuator (20) and a switched power driver (22) coupled to the switched step attenuator...  
WO2005008928A3
A system for outputting a broadband signal outputs a number of input channel streams. The input channel streams first arrive at the system in a digital format. There the input channel streams are each directed to a modulator circuit. Eac...  
WO2004027681A3
A radio frequency identification (RFID) tag antenna system includes a planar two arm logarithmic spiral antenna with a suitably small form factor. There are two arms are of conductive foils or etched copper plating on a substrate the ext...  
WO/2006/011723A1
A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A conductive H-shaped impedance matching element matches a source impedance to an antenna impedance. Th...  
WO/2006/000885A1
Disclosed is a method to operate a RF transmitter, and an RF transmitter constructed to operate in accordance with the method. The method includes determining a transmitter output power and varying a level of a signal at a transmitter ph...  
WO/2006/002347A1
A monolithic integrated circuit (IC), and method of manufacturing same, that includes all RF front end or transceiver elements for a portable communication device, including a power amplifier (PA), a matching, coupling and filtering netw...  
WO/2005/124923A1
There is provided a mobile telephone assuring a high reception sensitivity over a wide band without deteriorating the design of the mobile telephone. In the mobile telephone, a helical antenna (4) operating as an antenna for television r...  
WO/2005/122325A1
By devising the case shape and antenna arrangement, it is possible to provide a mobile radio terminal capable of always having a high antenna sensitivity even when the mobile radio terminal is placed in a pocket of user’s clothes. In t...  
WO/2005/114788A1
A stub-loop based antenna doublet array having an offset feed and adjustably positioned stub-loops is provided that enables improved isolation of the horizontal versus vertical polarization characteristics from the impedance. Consequentl...  

Matches 301 - 350 out of 2,819