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http://dx.doi.org/10.7840/kics.2016.41.11.1566

Polyphase I/Q Network and Active Vector Modulator Based Beam-Forming Receiver For UAV Based Airborne Network  

Jung, Won-jae (Kookmin University Department of Secured Smart Electric Vehicle)
Hong, Nam-pyo (Kookmin University Department of Secured Smart Electric Vehicle)
Jang, Jong-eun (Epic Solution Co., Ltd.)
Chae, Hyung-il (Kookmin University Department of Electrical Engineering)
Park, Jun-seok (Kookmin University Department of Electrical Engineering)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.41, no.11, 2016 , pp. 1566-1573 More about this Journal
Abstract
This paper presents a beam-forming receiver with polyphase In-phase/Quadrature-phase (I/Q) network for airborne communication. In beam-forming receiver, the insertion loss (IL) difference between input path increases the receiver noise figure (NF). The major element for generating IL difference is the impedance variation of phase shifter. In order to maintain a constant IL in every phase, this paper propose a lossless polyphase I/Q network based beam-forming receiver. The proposed lossless polyphase I/Q network has low Q-factor and high impedance for drive back-end VGA (Variable gain amplifier) block with low insertion loss. The 2-stage VGA controls in-phase and quadrature-phase amplitude level for vector summation. The proposed beam-forming receiver prototype is fabricated in TSMC $0.18{\mu}m$ CMOS process. The prototype cover the $360^{\circ}$ with $5.6^{\circ}$ LSB. The average RMS phase error and amplitude error is approximately $1.6^{\circ}$ and 0.3dB.
Keywords
Airborne network; UAV; beam-forming; phase shifter; vector modulator;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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