Topic
Phased array
About: Phased array is a research topic. Over the lifetime, 19428 publications have been published within this topic receiving 229231 citations. The topic is also known as: Phased Array Radar, PAR.
Papers published on a yearly basis
Papers
More filters
TL;DR: A multichannel phase modulator is described which employs the electrooptic roperties of lithium tantalate to achieve phase modulation and the beam steering results for a forty-six-channel modulator are given.
Abstract: A multichannel phase modulator is described which employs the electrooptic properties of lithium tantalate to achieve phase modulation. The modulator’s speed and 2π voltage are compatible with high speed microelectronics The beam steering properties of this one-dimensional optical phased array antenna are described, and the beam steering results for a forty-six-channel modulator are given.
120 citations
17 Jun 2012
TL;DR: In this article, an integrated CMOS 60 GHz phased-array antenna module supporting symmetrical 32 TX/RX elements for wireless docking is described, with shared blocks, mm-wave TR switch design with less than 1dB TX loss, and a full built in self test (BIST) circuits with 5deg and +/− 1dB measurement accuracy of phase and power.
Abstract: An integrated CMOS 60 GHz phased-array antenna module supporting symmetrical 32 TX/RX elements for wireless docking is described. Bidirectional architecture with shared blocks, mm-wave TR switch design with less than 1dB TX loss, and a full built in self test (BIST) circuits with 5deg and +/−1dB measurement accuracy of phase and power are presented. The RFIC size is 29mm2, consuming 1.2W/0.85W at TX and RX with a 29dBm EIRP at −19dB EVM and 10dB NF.
119 citations
TL;DR: In this article, a ghost artifact cancellation technique is disclosed, which uses a constrained optimization that optimizes signal-to-noise ratio (SNR) subject to the constraint of nulling ghost artifacts at known locations.
Abstract: A ghost artifact cancellation technique is disclosed. Phased array combining is used to cancel ghosts caused by a variety of distortion mechanisms, including space-variant distortions, such as local flow or off-resonance. The technique uses a constrained optimization that optimizes signal-to-noise ratio (SNR) subject to the constraint of nulling ghost artifacts at known locations. In one aspect multi-coil, k-space data is passed through a converter to convert the k-space data to image domain. After the conversion, the images contain ghost artifacts. The images are then passed through one or more phased array combiners. Each phased array combiner separates the superimposed ghosts to produce an image without ghosts. These images may then be aligned by means of shifting and combined by a variety of means to improve the final image quality. In another aspect, the phase encode order is varied in time to produce ghosts with time varying phase. The series of images are then used to adaptively compute the phased array combiner and output combiner coefficients. The developed technique may be used with phase encode orders which reduce image distortion.
119 citations
TL;DR: A transmitter and receiver phased array chipset is demonstrated in the range between 70 and 100 GHz using a 0.18 µm SiGe BiCMOS process with $f_{T}/f_{MAX}$ of 240/270 GHz.
Abstract: A transmitter and receiver phased array chipset is demonstrated in the range between 70 and 100 GHz using a 0.18 µm SiGe BiCMOS process with $f_{T}/f_{MAX}$ of 240/270 GHz. Each chip comprises four phased array elements with distributed calibration memory and calibrated direct up- and down-conversion mixer chain. Each receive channel has a conversion gain of 33 dB and noise figure of 5 dBm between 70 and 100 GHz. Both transmitter and receiver arrays operate from 1.5 V and 2.5 V power supplies and consume 1 W each. Using a die-on-PCB prototype with integrated antennas, a wireless link operating at 10 Gb/s (using 16-QAM) or 8.75 Gb/s (using 32-QAM) is demonstrated at a distance of 1-meter with a carrier frequency of 88 GHz.
119 citations
Patent•
26 Jul 2001
TL;DR: An integrated ceramic chip carrier module for a phased array antenna is proposed in this article, which is comprised of a plurality of layers of low temperature, co-fired ceramic formed into an integrated module.
Abstract: An integrated ceramic chip carrier module for a phased array antenna. The module is comprised of a plurality of layers of low temperature, co-fired ceramic formed into an integrated module. The module combines the injection molded probes, button layer and holder, and the ceramic chip carrier into a single integrated component part. This construction provides for improved performance, reliability, manufacturing repeatability, and lower overall antenna manufacturing costs.
119 citations