A charge sampling mixer with embedded filter function for wireless applications
Author
Summary, in English
A charge sampling mixer with embedded and programmable filter function is described, which is not based on the conventional sub-sampling but the proposed bandpass charge sampling (BPCS) principle. A BPCS circuit samples a radio signal by integrating the weighted current of the clocked radio signal in n clock cycles. The large sampling capacitor used in the circuit results in low noise and low charge and clock feedthrough. The BPCS circuit is simultaneously a high-Q filter, a homodyne mixer and a baseband signal sampler. The center frequency, the bandwidth and the adjacent selectivity can be set through the clock frequency, the number n and the weighting function. Simulation results of a 4 GHz charge sampling mixer in 0.35 μm CMOS are shown in the paper.
Publishing year
2000
Language
English
Pages
315-318
Publication/Series
Proceedings of 2nd International Conference on Microwave and Millimeter Wave Technology
Document type
Conference paper
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
ICMMT 2000
Conference date
2000-09-14 - 2000-09-16
Conference place
Beijing, China
Status
Published
ISBN/ISSN/Other
- ISBN: 0-7803-5743-4