Title :
Analysis and design of a high linearity quadrature demodulator based on SiGe BiCMOS process
Author :
Yadi Guo;Renyuan Chang;Jun Fu;Baoyong Chi;Yudong Wang
Author_Institution :
Department of Microelectronics, Tsinghua University, Beijing 100084, China
Abstract :
In the paper, a high linearity quadrature demodulator based on SiGe BiCMOS process is designed and implemented for 400MHz to 2GHz wide band wireless system. The 3rd intermodulation cancellation technique is applied to improve linearity. A negative feedback structure is applied to quadrature Gilbert mixer to lower its input impedance. RC polyphase network is analyzed and designed to increase the quadrature performance in wide band. Measurement results show excellent performance in the designed frequency range from 400MHz to 2GHz.
Keywords :
"Mixers","Linearity","Demodulation","Silicon germanium","Computer architecture","Ports (Computers)","BiCMOS integrated circuits"
Conference_Titel :
ASIC (ASICON), 2015 IEEE 11th International Conference on
Print_ISBN :
978-1-4799-8483-1
Electronic_ISBN :
2162-755X
DOI :
10.1109/ASICON.2015.7517119
