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


Vol. 41,  No. 11, pp. 1566-1573, Nov.  2016


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  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㎛ CMOS process. The prototype cover the 360° with 5.6° LSB. The average RMS phase error and amplitude error is approximately 1.6° and 0.3㏈.

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  Cite this article

[IEEE Style]

W. Jung, N. Hong, J. Jang, H. Chae, J. Park, "Polyphase I/Q Network and Active Vector Modulator Based Beam-Forming Receiver For UAV Based Airborne Network," The Journal of Korean Institute of Communications and Information Sciences, vol. 41, no. 11, pp. 1566-1573, 2016. DOI: .

[ACM Style]

Won-jae Jung, Nam-pyo Hong, Jong-eun Jang, Hyung-il Chae, and Jun-seok Park. 2016. Polyphase I/Q Network and Active Vector Modulator Based Beam-Forming Receiver For UAV Based Airborne Network. The Journal of Korean Institute of Communications and Information Sciences, 41, 11, (2016), 1566-1573. DOI: .

[KICS Style]

Won-jae Jung, Nam-pyo Hong, Jong-eun Jang, Hyung-il Chae, Jun-seok Park, "Polyphase I/Q Network and Active Vector Modulator Based Beam-Forming Receiver For UAV Based Airborne Network," The Journal of Korean Institute of Communications and Information Sciences, vol. 41, no. 11, pp. 1566-1573, 11. 2016.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880