14/56GHz MMIC四倍频器研究

【作者】 吴晓燕；

【导师】 文光俊；

【作者基本信息】 电子科技大学 ， 通信与信息系统， 2007， 硕士

【摘要】 随着微波电路和半导体材料的发展,单片微波集成电路(MMIC)技术日益成熟。MMIC凭借其尺寸小、质量轻、可靠性高、抗干扰能力强等一系列优点,广泛地应用于军事电子战、雷达、宽带通信、智能交通等系统,从军用到民用,MMIC的应用无所不在。倍频器能够降低电子设备的主振频率,扩展工作频段,解决微波频谱拥挤问题;此外,它还是频率合成器的一个重要组成部分。单片倍频器不仅具有以上的作用和特点,还结合了单片微波集成电路的优点。在现代的毫米波通信系统中,单片倍频器比混合电路设计的倍频器更具有优势。本论文的主要工作是基于0.15um GaAs PHEMT单片微波集成电路工艺,设计和研制14/56 GHz MMIC四倍频器芯片。该四倍频器采用有源倍频方案提高倍频增益;采用单管FET一阶四倍频电路拓扑结构,有效地减小芯片尺寸;利用四分之一波长开路微带传输线抑制和滤除基波和不需要的谐波。单片四倍频器的设计利用了Advanced Design System (ADS)软件进行电路模拟仿真和版图设计。本论文设计的MMIC四倍频器在输入功率为3.5~5dBm时,输入频率为14±0.5GHz条件下,其输出变频增益为-4.6±0.4dB,最大变频增益为-4.2dB;输出信号以56GHz为中心,3dB带宽7.1%;基波抑制大于30dBc,二次谐波抑制大于25dBc,三次谐波抑制大于27dBc;芯片的尺寸为1.5mm×1.2mm。该MMIC四倍频器设计满足预期目标,将应用于60GHz毫米波频综系统,提高工作频率。采用先进的0.15um GaAs PHEMT工艺,设计和研制实用的14/56 GHz MMIC四倍频器芯片是本学位论文的特色。目前,国内尚未见V波段MMIC毫米波四倍频器芯片的研究报道,本学位论文的研究有利于促进国内毫米波单片倍频器的发展。更多还原

【Abstract】 The technology of Monolithic Microwave Integrated Circuit (MMIC) progresses increasingly with the development of microwave circuits and semiconductor material. Base on a series of merits of small size, light quality, high reliability and good capability of anti-jamming, MMIC is used in military electronic warfare, radar, broadband communication and intelligent traffic system and so on. The application of MMIC is everywhere from military affairs to commerce.Frequency multipliers can make the oscillate frequency of electron equipments lower. It can solve the problem of crowded operation frequency in microwave band. It is also an important part of frequency synthesizers. Monolithic frequency multipliers not only have the function and characteristics mentioned above, but also have merits of MMIC. Comparing with Hybrid Microwave Integrated Circuit (HMIC) frequency multipliers, MMIC frequency multipliers are popular in modern millimeter wave high frequency communication systems.Based on 0.15um GaAs PHEMT MMIC process, design a chip of 14/56GHz MMIC quadrupler by Advanced Design System (ADS) simulation software is the main task of the thesis. The MMIC quadrupler uses active multiple scheme to improve conversion gain. Its configuration is based on single-ended one-stage that can effectively make the chip size smaller. Rejection of the fundamental and the undesired harmonic in the MMIC quadrupler are quarter wavelength microstrip open stubs.When power of input signal is 3.5~5dBm, the conversion gain of the MMIC quadrupler is -4.6±0.4dB, the maximum conversion gain is -4.2dB. When input frequency is 14±0.5GHz,the 3 dB bandwidth of 7.1% is obtained which the center frequency is 56GHz. The rejection of fundamental is larger than 30 dBc and rejection of unwanted harmonic is more than 25 dBc for second harmonic and more than 27 dBc for the third. The chip size of the MMIC quadrupler is 1.5mm by 1.2mm. The designed MMIC quadrupler meets the anticipate targets and it will be used in 60GHz millimeter wave frequency synthesizers to heighten operation frequency. It is characteristic of the thesis that designing a chip of 14/56 GHz MMIC quadrupler with advanced 0.15 um GaAs PHEMT MMIC process. The research of V-band MMIC millimeter wave quadrupler had not been reported in our country. The research work of the thesis will help to the development of millimeter wave MMIC frequency multipliers in our country.更多还原