Research And Design Of Multi-access High-speed Impulse Radio UEB Transmitter Chip

Driven by the mature technology of computing, Internet and wireless communication,it’s possible to build the inner high-speed, wireless interconncection between multipleelectronic devices in today’s informationized society. The wireless interconnection of indoorelectronic devices helps human beings to break the broundries of all kinds of cables, makingcommunication much more convenient. However, the traditional narrow-band communicationtechnology have to increase the bandwidth of the system in order to achieve a higher speedand have to lower the data rate or increase the bandwidth to achieve a higer user capacity.These have made narrow-band communication technology much further away from the needof transimition of huge amount of information and high user capacity, due to the lack ofspectrum resources nowadays. Under this background, Ultra-Wideband (UWB) technology isan attractive solution to short-range high-speed wireless communication, due to its advantageof low power, high transimission rate of data and large channel capacity.In this thesis, a low-complexity and low-power multi-access high-speed Impulse-Radio(IR) UWB transmitter and system solution was proposed. This multi-access high-speedIR-UWB transimitter was achieved by0.18μm CMOS process.First, a system solution was proposed for multi-access high-speed IR-UWB transimitter,and the system was designed including pulse shape and generation of IR-UWB RF signal,data modulation and multi-access modulation of IR-UWB system, a novel Pulse ShapeHopping (PSH) UWB transmitter system based on Gaussian derivatives pulse shpae.Then, in order to improve the key performance of the design of multi-access high-speedIR-UWB transmitter, some work was done as follows:(1) The width of ultra-narrow pulsewas designed and optimized based on the relative delay technology.(2) A novel multiplefundamental pulses combination technology was proposed to generate hopping4th derivativesand5th derivatives of Gaussian pulse, and the generator consumes no static powertheoretically.(3) A UWB power amplifier (PA) was proposed based on common gate withsource degerneration structure combined with RC parallel feedback techique, and the UWB PA achieves a output match and tunable output emission power in a ultrawide spectrum range.At last, the chip of multi-access high-speed IR-UWB transmitter was implemented byMPW programm. Post simulation results show that the chip can generate the IR-UWB RFsignal with a bandwidth of3-5GHz with a sidelobe suppression ratio more than30dB, and hasa low power consumption of10pJ/pulse at a highest symbol rate of200Mbps. Die size of thechip is450μm*970μm. The chip is low-complexity, low-power and high speed, which is verysuitable for multi-user, high data rate, short-range wireless communication application.The results of this thesis can be used as a reference for indoor wireless communicationsystem which has a harsh demand for power consumption and transmission speed.