TY - GEN
T1 - A reconfigurable spatial moving average filter in sampler-based discrete-time receiver
AU - Cho, Yong Ho
AU - Shin, Soo Hwan
AU - Kweon, Soon Jae
AU - Yoo, Hyung Joun
PY - 2011
Y1 - 2011
N2 - A non-decimation second-order spatial moving average (SMA) discrete-time (DT) filter is proposed with reconfigurable null frequencies. The filter coefficients are changeable, and it can be controlled by switching sampling capacitors. So, interferers can be rejected effectively by flexible nulls. Since it operates without decimation, it does not change the sample rate and aliasing problem can be avoided. The filter is designed with variable weight of coefficients as 1:α:1 where α varies from 1 to 2. This corresponds to the change of null frequencies within the range of f s/3∼f s/2 and f s/2∼2f s/3. The proposed filter is implemented in the TSMC 0.18-μm CMOS process. Simulation shows that null frequencies are changeable in the range of 0.38∼0.49 f s and 0.51∼0.62f s.
AB - A non-decimation second-order spatial moving average (SMA) discrete-time (DT) filter is proposed with reconfigurable null frequencies. The filter coefficients are changeable, and it can be controlled by switching sampling capacitors. So, interferers can be rejected effectively by flexible nulls. Since it operates without decimation, it does not change the sample rate and aliasing problem can be avoided. The filter is designed with variable weight of coefficients as 1:α:1 where α varies from 1 to 2. This corresponds to the change of null frequencies within the range of f s/3∼f s/2 and f s/2∼2f s/3. The proposed filter is implemented in the TSMC 0.18-μm CMOS process. Simulation shows that null frequencies are changeable in the range of 0.38∼0.49 f s and 0.51∼0.62f s.
KW - Discrete time filter
KW - software defined radio
KW - spatial moving average
KW - switched capacitor circuit
UR - http://www.scopus.com/inward/record.url?scp=84857181851&partnerID=8YFLogxK
U2 - 10.1109/RFIT.2011.6141759
DO - 10.1109/RFIT.2011.6141759
M3 - Conference contribution
AN - SCOPUS:84857181851
SN - 9781457705182
T3 - 2011 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2011
SP - 121
EP - 124
BT - 2011 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2011
T2 - 4th IEEE International Symposium on Radio-Frequency Integration Technology, RFIT2011
Y2 - 30 November 2011 through 2 December 2011
ER -