Study On Millimeter-wave Integrated Receiver Front-end

This dissertation is mainly on the theory and design of millimeter-wave integrated receiver front-end. Millimeter-wave monopulse radars are attractive for high-resolution tracking applications such as antimissile munition terminal guidance and communications satellite tracking. Millimeter-wave receiver font-end play an important role in many commercial as well as military applications. In the past, millimeter-wave receiver font-ends are dominated by waveguide- based designs which are built up using separately manufactured components, They are expensive and bulky. Studies on low-cost, compact, lightweight millimeter- wave receiver front-end is done in this paper. Chapter 1 is a survey on millimeter-wave technology, millimeter-wave planar integrated transmission lines and millimeter-wave integrated circuit (MIC). The motive of this millimeter-wave integrated receiver front-end is also given in this chapter. In chapter 2, a waveguide-to-microstrip transition is analysis with the finite- difference time-domain (FDTD) technology, the complete design data presented in this dissertation, experimental verification this probe type of transition is a broadband, low-loss transitions from rectangular waveguide to microstrip, it is particularly suitable for millimeter wave use. Then, a three-way power divider circuits using circular-sector-shaped planar components is designed. Finally, the double bonding wire interconnection of microstrip-microstrip is analysis with a quasi-static model, and the result is useful in microstrip MIC design. In chapter 3, an analytical expression for relationship between gain and noise figure is derived for the design of the millimeter-wave low noise transistor amplifier. The characteristic of analytical solutions is discussed in detail, which simplifies the empirical design. The millimeter-wave low noise HEMT JS8905-AS is analyzed and the millimeter-wave low noise amplifier design method is also presented. In chapter 4, a study of GaAs FET doubler is presented, and experimental verification the doubler is work well in Ka-band. In chapter 5, theory and technique of mixer are discussed. Schottky diode is introduced first. Then, various mixers are compared, and the millimeter wave planar integrated mixer is design and fabricated. Chapter 6 discussed the PIN diode and switch circuits. The SPST switch designed and the results are presented. In chapter 7, on the basis of above work, the millimeter-wave radar receiver font-end is realized consist of 3-way SPST switches, LNAs, mixers, doublers, IF amplifiers, divider, probe transition and bias circuits, all in 70 X 45 X 1 5mm3. The configuration is low-cost, compact and lightweight, suitable for many military uses.