Title :
A new robust detector for direct conversion receivers with DC notching filters
Author :
Stonick, John T. ; Pan, Dongling
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
We study modulation methods and develop new receiver detector structures for CMOS direct conversion receivers with notch filters. A DC notch filter is required in a direct conversion receiver to remove the undesired offset, generated by self-mixing products, and 1/f flicker noise of the down-converted signal. However, doing so introduces distortion onto the desired signal by attenuating its low frequency content. Our new detector structures help to overcome this induced distortion and help make direct conversion architectures feasible
Keywords :
1/f noise; CMOS integrated circuits; codes; correlation methods; electric distortion; filtering theory; flicker noise; modulation; notch filters; radio receivers; signal detection; 1/f flicker noise; CMOS direct conversion receivers; DC notch filter; LF signal content attenuation; Manchester line codes; correlation receiver; direct conversion architectures; distortion; down-converted signal; modulation methods; offset signals attenuation; polar NRZ line codes; robust detector; self-mixing products; 1f noise; Computer architecture; DC generators; Detectors; Distortion; Filters; Radio frequency; Robustness; Signal generators; System-level design;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853313
