The Design Of CMOS Symmetrical Mm-wave Frequency Doubler

In recent years, with the rapid development of microelectronic technology, silicon-basedsemiconductor technology, especially CMOS technology has begun to embark on the history.Meanwhile, as the wireless communication developing, RF front-end circuit becomes a wayas low cost, low error rate, high integrated and high-performance. As an important part of theRF integrated circuit, frequency doubler has been widely applied in communication, radar,frequency synthesizer and measurement techniques. As the same time, it has also been widelyused in low power, high stable oscillator, frequency synthesizer, phase locked oscillatortechniques. Because modern communication systems and electronic engineering put forwardmore and more requirements for electronic components, the design of frequency doubler withexcellent performance, small volume and high reliability, has very high practical value.A symmetrical frequency doubler for millimeter-wave is proposed in this work. On theone hand, through analyzing the circuit principle and the effect of performance index, thefrequency doubler is improved and optimized from the theory; On the other hand, the circuitand layout design, tape-out and test of frequency doubler will be completed through detailsimulation.This article discusses the theory and implementation of symmetrical frequency doublerin the CMOS process at length, and studies many key technologies in the design process.Based on TSMC90nm CMOS technology, the time-delay-compensated frequencydoubler is selected according to the overall demand for the subject system. Firstly, withanalyzing the effect of the frequency conversion loss, phase noise, port isolation and so on indetail, the whole system circuit is built. Secondly, according to the actual demand, the passivecomponents are analysed and simulated minutely. Thirdly, with satisfying the system designrequest, the simulation and optimization of the whole circuit are completed. Finally, asymmetrical frequency doubler chip for millimeter-wave is taped and tested.