학술논문
A S/C/X/Ku-band, 4-Tap, Digitally Controllable Analog FIR Filter with Reconfigurable Bandwidth and RF Filtering Profile
Document Type
Conference
Author
Source
2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS) BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), 2021 IEEE. :1-4 Dec, 2021
Subject
Language
Abstract
A proposed wideband integrated 4-tap analog finite impulse response (AFIR) filter has been implemented in silicon germanium (SiGe) technology for use in direct-throughput of RF signals in the microwave and millimeter-wave spectrum. To simultaneously provide bandwidth and RF filtering profile tunability, a wideband coefficient/polarity control circuit and time delay elements are utilized. The proposed 4-tap AFIR filter consists of coefficient/polarity/tap control circuits with equalization, time delay elements, wideband Wilkinson power divider/combiners, a two-stage low-noise amplifier (LNA) with equal power distribution, and an active power combiner. The proposed AFIR filter addresses flat in-band response, low-pass filter (LPF), high-pass filter (HPF), and notch filter depending on coefficient and polarity control sets. To provide simple system configuration and a high integration level for a multi-tap AFIR system, all required coefficients, polarities, and taps are controlled by digital control units.