Title :
A complex charge sampling scheme for complex IF receivers
Author :
Karvonen, Sumi ; Riley, Thomas ; Kostamovaara, J.
Author_Institution :
Dept. of Electr. Eng., Oulu Univ., Finland
Abstract :
A charge sampling technique for complex filtering and further quadrature downconversion of an I/Q downconverted IF signal is introduced. The presented technique can be applied to complex IF radio receivers for attenuating the image signal at the IF and for partial channel selection filtering. Circuit level simulations of a test circuit for complex filtering and quadrature downconversion of a 50 MHz I/Q IF signal are shown.
Keywords :
filtering theory; radio receivers; signal sampling; 50 MHz; I/Q quadrature downconversion; charge sampling; circuit simulation; complex IF radio receiver; image signal attenuation; partial channel selection filtering; wireless communication; Band pass filters; Circuits; Filtering; Finite impulse response filter; Frequency; Image sampling; Receivers; Sampling methods; Signal processing; Signal sampling;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205923
