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Six-port direct conversion receiver front-end of the Ka-band and wideband MMIC power amplifier design

Author: WuQiao
Tutor: YangTao
School: University of Electronic Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: Six-port technology Direct conversion receiver MMIC PHEMT Wideband power amplifier
CLC: TN851
Type: Master's thesis
Year: 2008
Downloads: 222
Quote: 2
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Abstract


The subject of direct conversion receiver front-end of the six-port technology , the study of the following aspects : 1 . Introduced the background of the development of the six-port direct conversion receiver , at home and abroad to study the dynamics and the statement of the six-port direct conversion receiver machine compared to other types of receivers has advantages , prospects and challenges . A system-level simulation . Entire six-port direct conversion receiver system . The simulation results show that , based on the six-port direct conversion receiver QPSK signal demodulation . This topic also PHEMT MMIC Study: 0.15μm PHEMT low noise UMS (United Monolithic Semiconductor) process line a 6GHz-20GHz monolithic MMIC amplifier chip design , the chip area of ??0.92mm × 1.02mm , using the two amplification structure , the first stage PHEMT gate width of 6 × 35μm, the second stage PHEMT gate width of 8 × 70μm, each level is biased in class A working state . Two negative feedback amplifier technology to optimize output and minimize distortion . Entire design band , the small-signal gain greater than 15 dB, gain flatness less than 1dB of 20GHz 1dB compression point of 17dBm, to achieve the design requirements .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Receiver equipment, radio Radio > Receiver: the form of points
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