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7616929 |
Cross-core calibration in a multi-radio system
A Radio Frequency (RF) transceiver includes a first RF transceiver group, a second RF transceiver group, local oscillation circuitry, and calibration control circuitry. Each of the RF transceiver...
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7610064 |
Direct downlink RF module
A downlink module is provided that includes a sensor interface operable to provide digital sensor signals. It also includes a GPS receiver for receiving GPS timing and location signals. The...
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7609205 |
Electrically steerable phased array antenna system
An electrically steerable phased array antenna system includes an array of antenna elements and a corporate feed network having an inner region for input of two input signals A and B. The corporate...
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7605754 |
Null-fill antenna, omni antenna, and radio communication equipment
A wide-angle null-fill antenna with no null in the depression angle range, an omni antenna using the same, and radio communication equipment. A null-fill antenna comprises a first antenna array...
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7596387 |
System for efficiently covering a sectorized cell utilizing beam forming and sweeping
A primary station for a wireless communication system transmits and receives communications within a sectorized cell with at least one secondary station. The primary station transmits and receives...
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7583229 |
Method for detection of faulty antenna array elements
A method for early detection of faulty antenna arrays comprising the step of treating said detection as a special case of target recognition; wherein targets of interest are all previous examples...
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7580674 |
Intelligent interface for controlling an adaptive antenna array
An antenna control interface is integrated with common integrated circuit components, such as radio transceiver or baseband modem signal processing control logic. The antenna control interface...
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7573272 |
Antenna reconfiguration verification and validation
A method of testing the electrical functionality of an optically controlled switch in a reconfigurable antenna is provided. The method includes configuring one or more conductive paths between one...
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7570957 |
Transmission control apparatus and transmission control method
An object is to implement transmission by an appropriate transmission method according to a type of information even in application of directional beam transmission. A transmission control...
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7561099 |
Radar device
To provide a radar device that is capable of performing both of long-distance detection performance and short-distance wide-angle monitor in a DBF system radar, there is provided a radar device of...
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7551136 |
Multi-beam phased array antenna for limited scan applications
Systems and methods are disclosed herein to provide improved phased array antenna system. For example, in accordance with an embodiment of the present invention, a phased array antenna system...
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7548764 |
Method and system for generating multiple radiation patterns using transform matrix
Techniques are provided herein for generating multiple radiation patterns. An antenna system comprises an antenna array having one or more antennas for providing a first radiation pattern and a...
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7545321 |
Array antenna calibration apparatus and method
The apparatus comprises a calibration signal supply means, which supplies calibration signals to a plurality of antenna elements that are to be subjected to calibration; a calibration signal...
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7535410 |
Weight calculation method, weight calculation device, adaptive array antenna, and radar device
A weight calculation method begins by storing a target reflection signal of a radar pulse received via an antenna in cells corresponding to positions along with a reception timing for a plurality...
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7535409 |
Imaging radar method and system
A time-reversal imaging radar system for acquiring an image of a remote target includes an antenna array having a plurality of spaced-apart antennas, and a transceiver coupled to the antenna array...
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7525482 |
Mitigation of array factor distortions for GPS and broadband reception
An adaptive antenna system may be used with a GPS system to improve operation in the presence of interference signals. A resulting adapted antenna pattern will cause array pattern distortions...
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7522552 |
Improving the performance of a wireless CSMA-based MAC communication system using a spatially selective antenna
Described herein is a device to be used in a wireless communication system with CSMA-based MAC, comprising a mechanism for transmitting at least a first and second Request-to-Send (RTS) messages...
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7522097 |
Radar platform angular motion compensation
A method to compensate for radar platform angular motion may include measuring or estimating any radar platform angular motion. The method may also include substantially decoupling each array...
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7522095 |
Polygonal cylinder array antenna
A polygonal cylindrically shaped phased array antenna forming a radar has an active aperture that focuses in any of one or more angular azimuth directions without inertia. It further includes...
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7508338 |
Antenna with compact LRU array
An element support and thermal control arrangement for an active array antenna, preferably modular, using line-replaceable units (LRUs), includes a radiating-side liquid-cooled cold plate lying...
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7505791 |
Antenna setting apparatus
An antenna setting apparatus that allows a user to receive a broadcast from a desired direction easily and excellently is configured as follows: an antenna setting apparatus includes: a control...
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7499727 |
Communications apparatus using adaptive antenna
A communications apparatus using an adaptive antenna having in a high frequency unit an antenna unit including a plurality of antenna elements and a plurality of adjustment units, provided...
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7496129 |
Method and apparatus for space division multiple access receiver
Methods and systems consistent with this invention receive a plurality of transmitted signals in a receiver having a plurality of receive elements, wherein each transmitted signal has a different...
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7492313 |
Digital processing radar system
A radar system array antenna includes plural elements. Each element is coupled to a port of a transmit-receive device. Digital data representing the characteristics of the radar signal is applied...
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7489948 |
Receiver capable of receiving radio signal with high quality
A receiver includes an array antenna, terminals, switches, a receiving circuit, a switch control unit and a reactance setting unit. Receiving circuit determines a received frequency and a received...
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7482976 |
Antenna calibration method and apparatus
Measurements of frequency and/or phase are taken at the signal ports (S 1 -S 4 ) of an ISS device ( 10 ). These measurements are used to determine phase errors within the ISS device, and phase...
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7460834 |
Method and apparatus for utilizing a directional beam antenna in a wireless transmit/receive unit
A method and apparatus for utilizing a switched beam directional antenna in a wireless transmit/receive unit (WTRU) is disclosed. A wireless communication system includes a serving cell, a neighbor...
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7460067 |
Systems and methods for dynamically compensating signal propagation for flexible radar antennas
A system for dynamically compensating signal propagation for flexible radar antennas receives measurement signals indicating the position of selected locations of an antenna array. The future shape...
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7460060 |
Electromagnetic wave transmitting/receiving module and imaging sensor having electromagnetic wave transmitting/receiving module
An electric wave transmitting/receiving module includes: a waveguide including a conductive member and an opening facing a transmitting side and/or a receiving side; a dielectric substrate disposed...
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7453398 |
Process compensating for array antenna radiating element positioning errors
The invention refers to array antennas consisting of a set of individual sources set out over the surface of the antenna and whose mechanical positioning is determined in such a way as to obtain...
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7450066 |
Phased array antenna system with adjustable electrical tilt
A phased array antenna system with adjustable electrical tilt includes an array ( 62 ) of antenna elements 62 1 , to 62 10 . It has a splitter ( 44 ) dividing a radio frequency (RF) carrier...
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7447523 |
Coordination of backhaul beam forming in wireless communication systems
A method and system for coordinating the use of beam forming between two communicating entities in a wireless communication system is disclosed. The two entities may communicate control information...
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7446728 |
Method and apparatus for constructing general wireless antenna systems
An antenna system of any three dimension (3D) geometry and method for constructing said system with an array of basic antenna elements are described. An antenna system beam pattern is specified....
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7444157 |
Method and apparatus for beam selection in a smart antenna system
A method of beam selection in a smart antenna system is provided. The method includes receiving a plurality of uplink beams by a plurality of receivers, each corresponding with one of the plurality...
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7440766 |
Method for employing multipath propagation in wireless radio communications
A method of employing multipath propagation in wireless radio communications uses an omnidirectional transmitting/receiving antenna at one end of a transmission link to send an interrogating signal...
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7439901 |
Active phased array antenna for aircraft surveillance systems
An active antenna is provided that includes an antenna element for transmitting RF transmit signals at a predetermined effective radiated power (ERP). An antenna module is configured to be mounted...
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7436800 |
Radio communication scheme
In this second radio channel setting example, the grouping is done for each radio mobile stations 98 running on the same lane. A different radio channel is assigned to each group. Accordingly,...
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7432855 |
RFID reader and active tag
In one embodiment, an RFID reader and active tag (RAT) includes: a first beam forming means for interrogating a plurality of RFID tags using at least a first set of two antennas coupled to a first...
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7423587 |
Method for frequency-driven generation of a multiresolution decomposition of the input to wave-based sensing arrays
A method for generating a multiresolution decomposition of an array signal by a bank of spatial bandpass filters is disclosed. The signal processing operation is implemented through the use of the...
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7423586 |
Antennas array calibration arrangement and method
In a radio communications system, a plurality of transceivers are each connected to one element of an array of antenna elements. In addition, at least one of the transceivers is additionally...
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7420507 |
Phased array antenna systems with controllable electrical tilt
A phased array antenna system with controllable electrical tilt generates two signals V 2 a and V 2 b with variable relative delay therebetween. The signals are converted into antenna element...
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7417598 |
Compact, low profile electronically scanned antenna
A compact, low profile electronically scanned antenna module is provided. The antenna module includes a multi-layer antenna integrated printed wiring board (AiPWB) that includes a radiator layer on...
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7414576 |
Precision RF antenna pointing
A precision antenna pointing system and methods are disclosed. Antenna pointing error is determined by detecting RF signal phases at locations along the edge of an antenna reflector. A set of...
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7411472 |
Low-loss integrated waveguide feed for wafer-scale heterogeneous layered active electronically scanned array
A wafer-scale heterogeneous layered active electronically scanned array (ESA) utilizes a low-loss integrated waveguide feed. The ESA is formed from wafer-scale subarray modules each of which...
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7408507 |
Antenna calibration method and system
A phased array antenna system includes an RF front end, a radome, and an optical calibrator embedded in the radome for enabling in-situ calibration of the RF front end. The optical calibrator...
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7403156 |
Method and system for performing digital beam forming at intermediate frequency on the radiation pattern of an array antenna
A method of performing digital beam forming on the radiation pattern of an array antenna using a plurality of antenna elements, each antenna element being coupled to a signal processing chain. A...
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7397420 |
Timing adjustment method for radar, and radar apparatus having automatic timing adjusting function
On/off timing of an amplifier and timing of antenna selection are accurately adjusted. When adjusting the on/off timing of the amplifier, modulation of a transmit signal is stopped, and a switch is...
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7392011 |
Method and system for flexibly distributing power in a phased array antenna system
A power system flexibly distributes power among phased array antenna apertures of a satellite (or other type of platform). By allocating the power provided by a power source among the apertures, if...
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7382983 |
Optical control type phased array antenna
An optical control type phased array antenna includes a laser generating means for generating light of single wavelength, an optical path branching means for branching the light emitted from the...
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7372402 |
Method for enhancing the measuring accuracy in an antenna array
The invention refers to a method and a system for enhancing the measuring accuracy in an antenna array ( 1 ), where the method comprises the steps of; a) receiving analog signals on all antenna...
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