壓控振蕩器(vco)技術(shù)綜述外文翻譯-其他專業(yè)(參考版)
2025-01-23 08:08本頁面
【正文】 s research work is aimed at the military application of unfolding, rarely involved in civil field. In the nieen eighties, SiIC technology is a kind of low frequency technology, not for the monolithic integrated VCO with Giga Hertz frequency and bandwidth required for. Through research and development, in 1990 the SiIC technique in high frequency and passive ponents integration has achieved significant progress, the successful development of the work with very high frequency transistor, variable capacitance diode and monolithic integration of high Q value of the inductor and the high frequency capacitor. The high frequency silicon monolithic integrated VCO research and development laid a technological basis. Wireless mobile munication system development, requirements in large quantities to provide low cost, small volume, work in the 800 ~2500MHz band VCO. It carried out a great deal of research and development work. In 1992, American California University was first reported by Silicon Monolithic VCO IC research. Thereafter, the silicon monolithic VCO 黃河科技學(xué)院畢業(yè)設(shè)計(jì)（ 文獻(xiàn)翻譯 ） 第 11 頁 IC research to enter prosperous period, using different techniques for Silicon Monolithic VCO IC continued publication. Silicon Monolithic VCO IC by high frequency bipolar transistor IC technology and SiCMOSIC technology developed by. In Silicon Monolithic VCO IC development process, academic and research institutions usually adopt the widely used SiCMOSIC technology, while the industry is using RFIC special BiCMOS technology. Silicon monolithic integrated VCO smaller volume, lower cost and suitable for mass production of products, but also can be used to RF frontend technology manufacturing. This shows, VCO can be associated with a mixer, low noise amplifier, phase locked loop and other RF frontend circuit function module to realize the integrated. It is because the VCO IC with these potential advantages, although early products of poor performance, but the research work has not stopped. Through continuous improvement, its products have been widely used in cordless phones, Bluetooth devices, WLAN, GPS, DBS and other wireless devices and systems. Table 1 lists some monolithic integrated VCO application examples [4]. Table 1 contains monolithic integrated VCO RFIC mercial examples At present, monolithic integrated VCO also cannot be used for phase noise of demanding applications. Like GSM, CDMA has a high data rate mobile phone system, also can use VCO ponents development trend of Technology In the future, VCO technology research and development work will continue to focus on VCO ponents and monolithic integrated VCO expansion. However, the monolithic 黃河科技學(xué)院畢業(yè)設(shè)計(jì)（ 文獻(xiàn)翻譯 ） 第 12 頁 integrated VCO technology is the research focus, but also the future of VCO technology development direction in order to adapt to modern wireless system development requirements, VCO ponents to small, high frequency, wide band, high output and characteristic development. We will adopt a new miniature ponents and more advanced thin film technology and surface mount technology, continue to promote the VCO package miniaturization and mounted on the surface of. The pass transistor oscillation circuit improvement and development, solve good miniaturization brings resonator Q reduces problems and low power consumption caused by deterioration of a problem. Fourth generation mobile phones and other work in the microwave band highend wireless systems need to further improve the working frequency of the VCO ponent, VCO ponent high frequency. Development of frequency higher microwave VCO ponents are very important research topic in the future. SiGe BiCMOS RF IC basic t
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