scholarly journals Cosecant-Squared Radiation Pattern Surface Wave Antenna For Millimeter-wave FMCW Vertical-Looking Radar System

Author(s):  
Jiashu Yang ◽  
Kin-Fai Tong
2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Qiang Bai ◽  
Kenneth L. Ford ◽  
Richard J. Langley

This paper presents a novel switchable electromagnetic bandgap surface wave antenna that can support both a surface wave and normal mode radiation for communications at 2.45 GHz. In the surface wave mode, the antenna has a monopole-like radiation pattern with a measured gain of 4.4 dBi at ±49° and a null on boresight. In the normal mode, the antenna operates like a back-fed microstrip patch antenna.


Author(s):  
Philipp Ritter

Abstract Next-generation automotive radar sensors are increasingly becoming sensitive to cost and size, which will leverage monolithically integrated radar system-on-Chips (SoC). This article discusses the challenges and the opportunities of the integration of the millimeter-wave frontend along with the digital backend. A 76–81 GHz radar SoC is presented as an evaluation vehicle for an automotive, fully depleted silicon-over-insulator 22 nm CMOS technology. It features a digitally controlled oscillator, 2-millimeter-wave transmit channels and receive channels, an analog base-band with analog-to-digital conversion as well as a digital signal processing unit with on-chip memory. The radar SoC evaluation chip is packaged and flip-chip mounted to a high frequency printed circuit board for functional demonstration and performance evaluation.


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