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Title: A 128-Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications

A configurable-bandwidth (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 in-band group delay of 11 ns that is primarily dominated by the inherent, fully predictable delay introduced by the sample-and-hold. 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 50-dB sharp attenuation in the stopband in order to minimize all out-of-band noise in the low signal-to-noise received radar signal. Fabricated in a 0.18-μm silicon on insulator CMOS process, the proposed filter consumes approximately 3.5 mW/tap with a 1.8-V supply. Finally, a 20-MHz two-tone measurement with 200-kHz tone separation shows IIP3 greater than 8.5 dBm.
Authors:
 [1] ;  [1] ; ORCiD logo [1] ;  [2]
  1. Texas A & M Univ., College Station, TX (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2017-11729J
Journal ID: ISSN 1063-8210; 658562
Grant/Contract Number:
AC04-94AL85000
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 ID: ISSN 1063-8210
Publisher:
IEEE
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING
OSTI Identifier:
1429673

Mincey, John Stephen, Su, Eric C., Silva-Martinez, Jose, and Rodenbeck, Christopher T.. A 128-Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications. United States: N. p., Web. doi:10.1109/TVLSI.2018.2803525.
Mincey, John Stephen, Su, Eric C., Silva-Martinez, Jose, & Rodenbeck, Christopher T.. A 128-Tap 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., Silva-Martinez, Jose, and Rodenbeck, Christopher T.. 2018. "A 128-Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications". United States. doi:10.1109/TVLSI.2018.2803525.
@article{osti_1429673,
title = {A 128-Tap Highly Tunable CMOS IF Finite Impulse Response Filter for Pulsed Radar Applications},
author = {Mincey, John Stephen and Su, Eric C. and Silva-Martinez, Jose and Rodenbeck, Christopher T.},
abstractNote = {A configurable-bandwidth (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 in-band group delay of 11 ns that is primarily dominated by the inherent, fully predictable delay introduced by the sample-and-hold. 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 50-dB sharp attenuation in the stopband in order to minimize all out-of-band noise in the low signal-to-noise received radar signal. Fabricated in a 0.18-μm silicon on insulator CMOS process, the proposed filter consumes approximately 3.5 mW/tap with a 1.8-V supply. Finally, a 20-MHz two-tone measurement with 200-kHz 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 = ,
volume = ,
place = {United States},
year = {2018},
month = {2}
}