Design and Implementation of Millimeter-wave Active phased Array Radar

This paper deals with the design and implementation of a digital beam former architecture which is developed for 4/8/12/16 element phased array radar. This technique employs a very high performance FPGA to handle large no of parallel complex arithmetic operations including digital down conversion and filtering. A 3MHz echo signal riding on an IF carrier of 60 MHz is under sampled at 50 MHz and down converted digitally to bring the spectrum to echo signal baseband. After suitable decimation filtering, the I and Q channels are multiplied with Recursive Least Squares based optimized complex weights to form partial beams. The prototype architecture employs techniques of pipelining and parallelism to generate multiple beams simultaneously from a 16 element array within 1 μsec. This can be extended to several number of arrays. The critical components employed in this design are eight 16 bit 125 MS/s ADCs and a very high performance state of the art Xilinx FPGA device Virtex-5 FX 130T having several on-chip resources and 150 MHz clock generators.

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Design and implementation of a high-speed, large-capacity, multi-type data recording system used in wideband phased-array radar

2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) ◽

10.1109/piers.2017.8262267 ◽

2017 ◽

Cited By ~ 1

Author(s):

Yingxiao Zhao ◽

Yue Zhang ◽

Qianqiang Lin ◽

Tao Li ◽

Zengping Chen

Keyword(s):

High Speed ◽

Phased Array ◽

Recording System ◽

Data Recording ◽

Large Capacity ◽

Design And Implementation ◽

Phased Array Radar ◽

Type Data

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Broadband and Integratable 2 × 2 TWT Amplifier Unit for Millimeter Wave Phased Array Radar

Electronics ◽

10.3390/electronics10222808 ◽

2021 ◽

Vol 10 (22) ◽

pp. 2808

Author(s):

Guo Guo ◽

Zhenlin Yan ◽

Zhenzhen Sun ◽

Jianwei Liu ◽

Ruichao Yang ◽

...

Keyword(s):

Millimeter Wave ◽

Phased Array ◽

Wave Interaction ◽

Phase Congruency ◽

Traveling Wave Tube ◽

Large Power ◽

Saturated Gain ◽

Phased Array Radar ◽

Vacuum Device ◽

Beam Wave Interaction

A novel power amplifier unit for a phased array radar with 2 × 2 output ports for a vacuum electron device is proposed. Double parallel connecting microstrip meander-lines are employed as the slow-wave circuits of a large power traveling wave tube operate in a Ka-band. The high frequency characteristics, the transmission characteristics, and the beam–wave interaction processes for this amplifier are simulated and optimized. For each output port of one channel, the simulation results reveal that the output power, saturated gain, and 3-dB bandwidth can reach 566 W, 27.5 dB, and 7 GHz, respectively. Additionally, the amplified signals of four output ports have favorable phase congruency. After fabrication and assembly, transmission tests for the 80-period model are performed preliminarily. The tested “cold” S-parameters match well with the simulated values. This type of integratable amplifier combined with a vacuum device has broad application prospects in the field of high power and broad bandwidth on a millimeter wave phased array radar.

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