Design And Miniaturization Of The Key Circuits For Microwave And Millimeter-Wave Transceiver Systems

The purpose of this dissertation is to develop the reduced-size monolithic microwave and millimeter-wave integrated circuits using commercial standard Silicon based CMOS and GaAs based HEMT processes.With the development of wireless technology, the traditional low frequency resources approach saturation. Because the microwave and millimeter-wave frequencies have wide bandwidth, and with the demand of high-data-rate communication systems, the research interest of wireless technologies has began to spreads from radio frequency to microwave and millimeter-wave frequency. The monolithic microwave and millimeter-wave integrated circuits, as the key components of microwave systems, are the hot research topics in wire-less transmission systems. For the integrated circuit, the size mainly determines the cost, and it also effects the yield and system integration. In this dissertation, some novel topolo-gies are introduced to developed reduced-size monolithic microwave and millimeter-wave integrated circuits.This dissertation starts with the research background and trend of microwave and millimeter-wave communications. Then, in chapter II, the design and analysis of the key circuits of 24-GHz wireless transmission systems based on CMOS process are introduced in detail. As the development of process, now the CMOS technology can be used in mi-crowave integrated circuit design. And with the help of low cost and potential of whole system integration, CMOS process gains more and more attentions. In this research, the key integrated circuits of wireless front-end system include LNA, Mixer, VCO are de-signed. The LNA are composed by a common source stage and a cascode stage, with the help of reactive feedback topology of the input stage, the LNA can get a compact layout and get input match and noise match simultaneously. The single balanced mixer is composed by a 180°hybrid and two diodes. A new topology hybrid is proposed to get a reduced- size mixer. For the multi-phase voltage control oscillator, the composited left/right handed transmission line theory is introduced to this design to make a compact VCO.In chapterⅢ, high performance monolithic microwave circuits working at X-band are designed and analysis. For the X-band image-rejection receiver, the on chip baluns and couplers are the largest components. In this design, spiral coupler technique is introduced to the mixer and image rejection modulator design. The measurement results show the measured results of the low noise amplifier fit the simulated one very well, and get the best results based on the same process.In chapterⅣ, an LNA and a sub-harmonic pump mixer of 60-GHz receiver system are designed. Because the working frequency is very high, sub-harmonic pump topology is adopted to down convert the high frequency RF using lower frequency LO. The filters of the mixer are composed by quasi-lump components instead of distributed quarter-wave length transmission lines to reduce the chip size. The low noise amplifier is composed by three common source stages to get sufficient gain.