Ka頻段主動式陣列天線暨接收機前端電路之研製 ; Ka-Band Active Antenna Array and Receiver Front-End Circuits Design

NCUIR > College of Electrical Engineering & Computer Science > Executive Master of Electrical Engineering > Electronic Thesis & Dissertation > Item 987654321/44743

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/44743

Title:	Ka頻段主動式陣列天線暨接收機前端電路之研製;Ka-Band Active Antenna Array and Receiver Front-End Circuits Design
Authors:	劉志春;Chih-Chun Liu
Contributors:	電機工程研究所碩士在職專班
Keywords:	陣列天線;低雜訊放大器;壓控振盪器;VCO;LNA;Array antenna
Date:	2010-07-27
Issue Date:	2010-12-09 13:54:13 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文主要研究內容為Ka頻段主動式陣列天線及接收機之前端電路研究，其中所設計的主動式天線陣列部分則是利用Rogers RO5880板材所製作，整合低雜訊放大器以及功率放大器，並且固定於金屬機殼之中；晶片則是利用tsmc 0.18 ?m CMOS製程研製，包括28 GHz共源極寬頻放大器、28 GHz變壓器回授技術之共平面波導低雜訊放大器、27.1 GHz變壓器回授式壓控振盪器等。主動式天線陣列設計中包含了一分四威金森功率分配器、角型偶極天線(Angled-dipole antenna)、角型偶極天線陣列(Angled-dipole antenna array)以及整合低雜訊放大器及功率放大器之主動式天線陣列(active antenna array)。 Ka 頻帶接收機前端電路則包含三個電路，其中28 GHz寬頻低雜訊放大器，中心頻率為28 GHz，功率增益為12.6 dB，而3-dB頻寬可以達到8 GHz，其中平坦度可以達到±1.3 dB，輸入輸出返回損耗皆大於8.3 dB，雜訊指數在22 ~ 30 GHz之間為4.87 ~ 6.55 dB。Ka頻段變壓器回授技術之共平面波導低雜訊放大器，中心頻率在28 GHz，功率增益為15.11 dB，輸入返回損耗大於12 dB，輸出返回損耗則大於7 dB，雜訊指數在28 GHz 之間為5.87 dB。27.1 GHz變壓器回授型壓控振盪器則是利用變壓器來獲得較低的相位雜訊，在1 MHz的相位雜訊為-93.27 dBc/Hz，輸出功率為-17 dBm，可調頻率範圍為700 MHz。The work in this thesis focuses on Ka-band active array antenna and Ku-band RF receiver front-end circuits. The active array antenna uses Rogers RO5880 substrate to integrate the low noise amplifier (LNA) and power amplifier (PA), then assemble them to the metal housing. The LNA and PA were designed and fabricated in tsmc 0.18 ?m CMOS technology. The designed circuits include 28 GHz common source wideband LNA, Ku-band CPW LNA with transformer feedback technique. A 27.1 GHz transformer feedback voltage control oscillator is also designed and demonstrated. The active antenna array design includes Wilkinson power divider, angled-dipole antenna, angled-dipole antenna array and active antenna array which integrate previous mentioned LNA and PA. The thesis further addresses Ka-band RF receiver front-end circuits. The 28 GHz common source wideband LNA was implemented using inductive source degenerated topology. The LNA achieved a gain of 12.6 dB, a 3-dB bandwidth of 8 GHz and the input /output return losses of more than 8.3 dB , a noise figure of 4.87 ~ 6.55 dB between 22 ~ 30 GHz. The Ka-band CPW LNA using transformer feedback technique achieved a gain of 15.11 dB, input return losses of more than 12 dB, output return loss of more than 7 dB, a noise figure of 5.87 dB. The 27.1 GHz transformer feedback voltage controlled oscillator utilized the transformer to lower the phase noise. This VCO obtained a tuning range of 700 MHz, an output power of -17dBm, and the phase noise of -93.27 dBc/Hz at 1 MHz offset.
Appears in Collections:	[Executive Master of Electrical Engineering] Electronic Thesis & Dissertation

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