Reseach And Design Of Millimeter Wave Injection-locked Divider And OOK Modulator Based On CMOS Technology

To accommodate the growing high data rate transmission as well as development of emerging applications(HDTV), research on OOK transceiver and millimeter-wave phase-locked source for high-speed short-range wireless transceivers increasingly active. Millimeter-wave frequency dividers have many structures(such as a current-mode logic divider, Miller divider and injection locked frequency divider), especially, injection locking structure(ILFD) with high frequency, low power consumption and low phase noise, etc., making it an ideal choice. On/off isolation is an important properties in OOK transceiver, and it is mainly determined by the OOK modulator. In this paper, injection-locked frequency divider and OOK modulator acted as the research subject, focused on the lock range, dynamic characteristics, phase noise of ILFD and OOK modulation on/off isolation, the main research content is divided into the following four parts.Injection-locked frequency divider model is analysed at the beginning of this thesis, introduces its free resonant model, Alder model, Miller model and general model; then analyses the locking range, dynamic characteristic and phase noise of ILFD, understanding of injection locking phenomena and phase noise source from the macroscopic angle.In order to get the optimization methods of low phase noise design and broadband lock range design of injection-locked frequency divider, the second part of this thesis introduces a more detailed analysis of locking range, phase noise for injection-locked frequency divider from the circuit point, obtaining the relationship between the locking range, phase noise and the circuit parameters.The third part of this thesis discusses the design method of millimeter wave injection-locked frequency divider in detail, first introduced the design method of cross coupled which based on the theory of maximum output power, and verifing the correctness of this method by the traditional methods of extracting negative conductance; then in depth analyse the influence of overdrive voltage of injection transistor and output voltage amplitude to locking range, At the same time the comparision of simulation results on on-chip passive components in HFSS and experimental results proved design method of on-chip passive components in HFSS with high accuracy; finally injection-locked frequency divider achieves a low power consumption of 7.5mW, its locking input frequency changes from 54.6GHz to 68.5GHz, and its frequency locking range up to 13.9GHz(23%). The injection locked divider covers the frequency range which divided by all countries in the 60 GHz band(57~66GHz).Finally, a detailed introduction of design method of high isolation OOK modulator is descripted.First, through the analysis of current path in traditional OOK modulator,a new structure of high isolation OOK modulator is presented; Measured results of the on/off isolation of OOK modulator which is integrated in Q-LINKPAN OOK transmitter is 40 d B, reached the international advanced level; finally, a new version of OOK modulator design and the main points of layout design is discussed in detail; the OOK modulator achieves on/off isolation of 62 d B, data rate of 4Gbps, OP1 d B of 2.6d Bm,IP1 d B of 3d Bm, and the OOK modulator is stable within 100MHz~80GHz.