| Summary: | 碩士 === 臺灣大學 === 電子工程學研究所 === 96 === The convenience of wireless communication services stimulates the demands of increasing communication data rates. To achieve high data rates, a wide frequency spectrum is required. Many emerging wireless applications have been explored at millimeter-wave (mm-wave) to move away from the over-crowded low-gigahertz range and take advantage of wide available frequency spectrum. However, due to the inherent limitation of maximum transducer gain in millimeter wave frequency, a new circuit scheme for mm-wave low noise amplifier is crucial for good performance.
Firstly, we introduce one novel noise cancelling for mm-wave LNA which is suitable for robust process variation in high frequency. It is implemented in 0.15μm pHEMT process with 1.2V supply voltage and consumes only 38mW.
Then, we introduce a double gain-boosting LNA for providing maximum transducer gain with the same power consumption in 60GHz. It is implemented in 130-nm CMOS process with 1.2V supply voltage and consumes only 19.2mW.
Recently, the need for high quality positioning and satellite navigation capability has been stimulating the progress from conventional GPS( Global Positioning System) to exquisite GPS/Galileo system. The objective of GPS/Galileo system is linear combination the number of satellites of both (GPS and Galileo) system and become a truly GNSS solution.
Based on this, we proposed a dual-band receiver for GPS/Galileo L1+E5a application which demonstrates a novel concurrent dual-band receiver architecture and takes only one synthesizer on the basis of cost issue. Then we introduce the front-end building blocks implementation which includes active balun、up-converter、LNA、synthesizer、VCO and I/Q mixer.
To further achieve low cost requirement, the overall receiver are designed with 1V supply voltage and standard 130-nm CMOS technology.
|
|---|
