دانلود مقاله ترجمه شده سویینگ اولیه در ناپایداری کنترل شده

This paper describes an L-Band voltage controlled oscillator, VCO, designed for a student’s semester final project for the Johns Hopkins University, Monolithic Microwave Integrated Circuit, MMIC, class # 525.787. This VCO is one of several student designs used to form a “Wireless Communications Service”, WCS, system or an “Industrial, Scientific and Medical”, ISM, system. The computer aided design, CAD, tools used for this project include Agilent’s Advanced Design System, ADS, version 1.5, and MathWork’s Student Edition of Matlab release 12. The VCO’s target of fabrication is TriQuint Semiconductor’s Texas 0.6 mm Gallium Arsenide fab. TriQuint provided the device library used to describe the circuit elements within the VCO. The VCO requirements include: a center frequency of 1170 MHz; a tuning range of +/- 50 MHz; minimum output power of +10dBm, desired output power of +13dBm; supply voltage of +/- 5 volts, desired supply voltage of + 5 volts only; frequency tuning voltage of 0 – 5 volts; output impedance of 50 ohms, nominal; sized to fit on the 60 x 60 mil TriQuint ANACHIP