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This paper explores a 60 GHz phased array system for ultra-high data rate communication in indoor environments. The channel modeling is addressed and the system link budget is calculated. A 16-element phased array system specifications are presented. This paper also presents the design of one of the key blocks — a 5-bit digitally controlled passive phase shifter. The switch-type phase shifter is implemented...
Space Fence, currently under construction on Kwajalein Atoll, will revolutionize Space Situational Awareness (SSA) using advanced phased array radar technology in two of the largest phased arrays to ever be constructed. Space Fence will provide catalog completeness, accuracy and timeliness with vastly improved performance in Low Earth Orbit (LEO) and capability to support missions in Geosynchronous...
We propose an ADC-digital codesign approach to IF sampling digital beamforming (DBF) that combines continuous-time bandpass ${\Delta \Sigma }$ modulators (CTBPDSMs) and bit-stream processing (BSP). This approach enables power- and area-efficient DBF by removing the need for digital multipliers and multiple decimators. The prototype beamformer digitizes eight 260 MHz IF signals at 1040 MS/s with eight...
This paper describes technology development efforts in support of phased-array digital beamforming at Applied Radar, Inc. The development efforts are aimed at increasing the bandwidth and dynamic range and enabling real-time throughput of multi-channel array data. This digital beamforming approach enables improved calibration, increased coverage through multiple receive beams, and adaptive processing...
Until a decade ago, the concept of phased array beam forming was mainly implemented with mechanical or analog solutions. Today, digital hardware has become powerful enough to perform the massive number of operations required for real-time digital beam forming. While more and more applications are using beam forming to improve the communication channel utilization both in space and frequency, many...
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