A 128Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications
Abstract
A configurablebandwidth (BW) filter is presented in this paper for pulsed radar applications. Also, to eliminate dispersion effects in the received waveform, a finite impulse response (FIR) topology is proposed, which has a measured standard deviation of an inband group delay of 11 ns that is primarily dominated by the inherent, fully predictable delay introduced by the sampleandhold. The filter operates at an IF of 20 MHz, and is tunable in BW from 1.5 to 15 MHz, which makes it optimal to be used with varying pulse widths in the radar. Employing a total of 128 taps, the FIR filter provides greater than 50dB sharp attenuation in the stopband in order to minimize all outofband noise in the low signaltonoise received radar signal. Fabricated in a 0.18μm silicon on insulator CMOS process, the proposed filter consumes approximately 3.5 mW/tap with a 1.8V supply. Finally, a 20MHz twotone measurement with 200kHz tone separation shows IIP3 greater than 8.5 dBm.
 Authors:

 Texas A & M Univ., College Station, TX (United States)
 Sandia National Lab. (SNLNM), Albuquerque, NM (United States)
 Publication Date:
 Research Org.:
 Sandia National Lab. (SNLNM), Albuquerque, NM (United States)
 Sponsoring Org.:
 USDOE National Nuclear Security Administration (NNSA)
 OSTI Identifier:
 1429673
 Report Number(s):
 SAND201711729J
Journal ID: ISSN 10638210; 658562
 Grant/Contract Number:
 AC0494AL85000
 Resource Type:
 Accepted Manuscript
 Journal Name:
 IEEE Transactions on Very Large Scale Integration (VLSI) Systems
 Additional Journal Information:
 Journal Name: IEEE Transactions on Very Large Scale Integration (VLSI) Systems; Journal Volume: 26; Journal Issue: 6; Journal ID: ISSN 10638210
 Publisher:
 IEEE
 Country of Publication:
 United States
 Language:
 English
 Subject:
 42 ENGINEERING
Citation Formats
Mincey, John Stephen, Su, Eric C., SilvaMartinez, Jose, and Rodenbeck, Christopher T. A 128Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications. United States: N. p., 2018.
Web. doi:10.1109/TVLSI.2018.2803525.
Mincey, John Stephen, Su, Eric C., SilvaMartinez, Jose, & Rodenbeck, Christopher T. A 128Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications. United States. doi:10.1109/TVLSI.2018.2803525.
Mincey, John Stephen, Su, Eric C., SilvaMartinez, Jose, and Rodenbeck, Christopher T. Wed .
"A 128Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications". United States. doi:10.1109/TVLSI.2018.2803525. https://www.osti.gov/servlets/purl/1429673.
@article{osti_1429673,
title = {A 128Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications},
author = {Mincey, John Stephen and Su, Eric C. and SilvaMartinez, Jose and Rodenbeck, Christopher T.},
abstractNote = {A configurablebandwidth (BW) filter is presented in this paper for pulsed radar applications. Also, to eliminate dispersion effects in the received waveform, a finite impulse response (FIR) topology is proposed, which has a measured standard deviation of an inband group delay of 11 ns that is primarily dominated by the inherent, fully predictable delay introduced by the sampleandhold. The filter operates at an IF of 20 MHz, and is tunable in BW from 1.5 to 15 MHz, which makes it optimal to be used with varying pulse widths in the radar. Employing a total of 128 taps, the FIR filter provides greater than 50dB sharp attenuation in the stopband in order to minimize all outofband noise in the low signaltonoise received radar signal. Fabricated in a 0.18μm silicon on insulator CMOS process, the proposed filter consumes approximately 3.5 mW/tap with a 1.8V supply. Finally, a 20MHz twotone measurement with 200kHz tone separation shows IIP3 greater than 8.5 dBm.},
doi = {10.1109/TVLSI.2018.2803525},
journal = {IEEE Transactions on Very Large Scale Integration (VLSI) Systems},
number = 6,
volume = 26,
place = {United States},
year = {2018},
month = {2}
}