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7619562 |
Phased array systems
A phased array system having antennas, non-variable phase shifters, and switches. The non-variable phase shifters are configured to be coupled selectively to a transmitter or a receiver. A...
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7613429 |
NRD guide transceiver, download system using the same, and download memory used for the same
The invention aims at providing an NRD guide transceiver not requiring a change-over switch for transmission and reception, a download system being of a simple structure and capable of downloading...
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7587177 |
Electronically configurable transmit and receive paths for FDD wireless communication devices
Methods and systems are provided for allowing an FDD radio to be configured to operate in Rx-high/Tx-low or Rx-low/Tx-high modes of operation. In accordance with one aspect, this is achieved in an...
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7565172 |
Adaptive antenna reception method and device
An adaptive antenna receiver whose follow-up performance is improved with respect to the angle change of the arrival direction of a desired signal. An antenna weight adaptive update section ( 11 -...
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7561854 |
Lossless transmit path antenna switch circuit
A system ( 200 ) for lossless transmit path antenna switching in a transceiver using quadrature combined power amplifiers is provided. The system is comprised of a quadrature (90°) hybrid power...
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7529209 |
System and method for mitigating fading of a signal at a radio receiver
The present invention provides a method and system for mitigating fading and/or poor reception at a receiver. The receiver includes configurations each of which can provide different reception...
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7519395 |
Adaptive cancellation of fixed interferers
An improved base station which cancels the effects of known fixed interference sources produces a signal substantially free from the interference sources thereby increasing total channel capacity....
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7466970 |
Arrangement for dividing a filter output signal
An arrangement for dividing the output signal of the antenna filter of a radio receiver to two different paths, such as two parallel low-noise amplifier branches of a base station. The divider...
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7412217 |
Transceiver with interference signal rejection, and method for interference signal rejection
A transceiver with interference signal rejection has a transmission path and a reception path. The transmission path is connected to a transmission amplifier whose output is coupled to an antenna....
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7392029 |
Method and apparatus for true diversity reception with single antenna
A system for wireless communication, particularly for receiving communication signals, said system comprising: A main antenna structure ( 330 ), said antenna structure adapted to receive a...
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7376406 |
Diversity reception apparatus
A diversity reception apparatus having a simple configuration which includes only one AD conversion unit and receives analog modulated signals is provided. The diversity reception apparatus...
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7333786 |
Relaying apparatus and communication system
A relaying device for providing optimum communication between a non-contact information medium and an information read/write device, and a communication system employing the relaying device, in...
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7317901 |
Slotted multiple band antenna
A multiple band antenna has an RF coupling structure ( 110 ) and a resonant RF structure ( 102 ). The RF coupling structure ( 110 ) has an RF connection ( 116, 118 ) and an RF coupling end ( 112,...
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7308285 |
Antenna adaptation in a time division duplexing system
A technique for steering a directional antenna such as may be used with User Equipment (UE) in a wireless communication system. Optimum angle settings for the directional antenna are determined as...
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7295825 |
Diversity antenna arrangement
A diversity antenna arrangement to reduce cost and the number of switching operations between different antennas includes an antenna changeover switch for switching between antennas, and an...
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7248839 |
Arrangement for operating various terminal devices
In a first embodiment, the invention relates to an arrangement for operating a plurality of terminal devices ( 6 ) on a common antenna ( 4 ) with a coupling network ( 2 ) comprising a first...
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7221923 |
Receiving apparatus
A receiving apparatus which appropriately selects one out of a plurality of antennae for reception. The receiving apparatus is provided with a reception means for receiving a radio wave via an...
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7218902 |
Antenna for communication with a satellite
A telecommunication system uses a satellite antenna showing on the horizontal plane, a sufficiently narrow radiation lobe to discriminate two adjacent satellites and showing on the vertical plane,...
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7206554 |
Transmit diversity with formed beams in a wireless communications system using a common pilot channel
A method and apparatus are provided that allows beamforming to be used on a user-specific signal together with a sector-wide pilot signal in a communication system, such as a CDMA system. In one...
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7200373 |
Antenna detection and diagnostic system and related method
An antenna detection and diagnostic system and associated method, including current and voltage detection circuits, are disclosed for detecting antenna failure mechanisms for integrated radio...
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7197298 |
Radio-communication terminal device that prevents communication through an unauthenticated antenna
A radio-communication terminal device having an antenna unit incorporating an antenna element and an authenticator for authenticating the connected antenna element, and a transceiver unit that...
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7184734 |
Radio communication apparatus
A radio communication apparatus using an array antenna has a plurality of reception branches for conveying reception signals received at the antenna element of the array antenna, and a calibration...
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7184727 |
Full-duplex antenna system and method
A system and method is provided for full-duplex antenna impedance matching. The method comprises: effectively resonating a first antenna at a frequency selectable first channel in a first frequency...
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7162217 |
Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument
The invention relates to a wireless instrument ( 1 ) includes a wristband ( 2 ) having a first ( 2 a ) and a second ( 2 b ) band portions connected to opposite edges of a casing ( 3 ), each of the...
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7158789 |
Communication network in particular for telephony
A communications network, in particular for telephony, comprises at least one operator a plurality of remote units for exchanging signals with mobile terminals and an interface unit for controlling...
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7149489 |
Diversity apparatus and method for a mobile communication terminal
A diversity apparatus for a mobile communication terminal with a GPS function. The diversity apparatus comprises: a first multiband antenna with a first reception polarization characteristic, for...
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7120468 |
System and method for steering directional antenna for wireless communications
A system and method for determining an optimal antenna position of a directional antenna in a wireless communication system are described. The optimal antenna position is determined by calculating...
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7110719 |
Indoor mobile communication device
It is an object of the present invention to provide an indoor mobile communication device having a simple structure, providing a sufficient communication range, and also providing for stable...
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7099686 |
Microstrip patch antenna having high gain and wideband
A microstrip patch antenna having high gain and wide band is disclosed. The microstrip patch antenna includes: a first patch antenna layer for radiating a energy supplied from...
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7076265 |
Power reduction method for a mobile communication system
A mobile unit 40 which is in a soft handoff condition 50 with a base station ( 32 ) has the power transmitted by the base station ( 32 ) on the mobile link ( 52 ) controlled. The base station (...
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7035611 |
Apparatus and method for front-end circuitry in radio-frequency apparatus
A radio-frequency (RF) apparatus includes front-end circuitry. The front-end circuitry includes a filter circuitry and an impedance matching circuitry. The filter circuitry has a differential...
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7010264 |
System and method for detecting the connections of two antennae to a radio receiver
A system and method for confirming that two antennae are connected to a radio receiver. There is provided a radio receiver including a signal generating source, a first antenna feed connection...
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6990363 |
Wireless communication device with an improved antenna structure
The present invention provides a wireless device including: at least an antenna; and at least a conductive ground serving as a ground, through which a high frequency current flows, and the...
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6987958 |
Method for combining communication beams in a wireless communication system
A method provides a technique for optimally combining communication beams. The method forms a plurality of beams from captured signals. One beam is selected as the primary beam while a subset of...
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6985354 |
Portable computer mounted with wireless LAN card
A portable computer having a main board; an antenna receiving and transmitting an RF signal; a PCI slot part provided in the main board and receiving the RF signal received and transmitted through...
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6983174 |
Distributed active transmit and/or receive antenna
A distributed antenna system comprising a plurality of antenna elements, duplexers and amplifiers, each amplifier and duplexer operatively coupled with one of said antenna elements and mounted...
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6961596 |
Modular RF antenna and filter system for dual radio WLAN access points
The present invention relates to low-cost improvement of performance of multiple radio wireless access points. It relates to combinations of an antenna and one or more of a filter or an active...
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6919841 |
GPS receiver system
In a GPS receiver system having a navigation GPS receiver unit and an assisted GPS receiver unit, a coupler is connected between a navigation GPS receiver and an assisted GPS receiver. A navigation...
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6917795 |
Multi-carrier receiver with improved radio frequency interference canceling
A multi-carrier receiver selects antennas (A 31 , A 32 ), i.e. carriers whereto a small amount of power and data is allocated, for estimation of characteristics of a narrowband disturber...
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6917793 |
Antenna assembly with a capability to remember the frequency of remote signals and to search for and memorize wireless frequency bands
An antenna assembly has an antenna set, a rotation assembly and a control circuit for driving the rotation assembly to rotate to adjust receiving angel of the antenna set. The control circuit can...
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6917336 |
Miniature ultra-wideband active receiving antenna
According to some aspects of this invention, a compact, broadband active receiving antenna uses one or more high transconductance transistors such as Field Effect Transistor(s) paired with another...
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6871063 |
Method and apparatus for controlling access to a computer system
For one embodiment, a short-range, wireless communication link, such as a Bluetooth link, is established between a mobile phone and a computer system. The mobile phone transmits an access code via...
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6871054 |
Method and apparatus for predictably switching diversity antennas on signal dropout
A low-cost diversity antenna switching system and method is realized by controlling bias voltages on PIN diodes. By increasing the reverse bias voltage impressed upon a PIN diode, an RF signal...
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6868258 |
Structure for connecting non-radiative dielectric waveguide and metal waveguide, millimeter wave transmitting/receiving module and millimeter wave transmitter/receiver
It is an object of the invention to provide a connection structure for connecting the dielectric strip of an NRD guide with a metal waveguide, in which the conversion loss (connection loss) for...
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6847813 |
RF printed circuit board connector with through-hole leads
A radio frequency connector that protrudes through a printed circuit board is comprised of threaded leads. A center conductor is shielded when a shielding connector cap, having a threaded inner...
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6845253 |
Electromagnetic antenna apparatus
An apparatus for transferring electromagnetic energy intermediate a host device and a medium or free space adjacent to the apparatus in an impulse radio system includes: (a) an energy guiding means...
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6823177 |
Radio station with circularly polarised antennas
A radio station including two antennas combined with respective first and second hybrid transmission polarization couplers is disclosed. Each antenna is arranged to generate two orthogonal electric...
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6816739 |
Radio system attenuator for an antenna
A radio system having a hub transceiver and a plurality of customer premise transceivers at different distances from the hub transceiver. Each of the customer premise transceivers includes an...
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6745051 |
Six sector antenna structure
An antenna structure which has a platform defining at least six sectors having a vertex contained substantially within the platform. At least six dual polarized antennas are positioned on the...
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6574459 |
Multiple branch receiver system and method
A receiver provides received analog signals to a plurality of channel branches, and on at least one of the channel branches, the frequency of the received analog signals is adjusted independent of...
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