A new second-order all-pass filter in 130-nm CMOS

P Ahmadi, B Maundy, AS Elwakil… - … on Circuits and …, 2015 - ieeexplore.ieee.org
This brief presents a novel wide-bandwidth second-order voltage-mode all-pass filter
derived from a canonical single transistor bandpass filter. The core of the circuit consists of …

A 0.13- m CMOS Current-Mode All-Pass Filter for Multi-GHz Operation

P Ahmadi, MH Taghavi, L Belostotski… - … Transactions on Very …, 2015 - ieeexplore.ieee.org
A CMOS wide-bandwidth first-order current-mode all-pass filter (APF) is discussed. The
circuit consists of one transistor, a resistor, a grounded inductor, and a load. When used with …

Tunable active inductor-based second-order all-pass filter as a time delay cell for multi-GHz operation

SR Aghazadeh, H Martinez, A Saberkari… - Circuits, Systems, and …, 2019 - Springer
In this paper, a CMOS wideband second-order voltage-mode all-pass filter as a time delay
cell is proposed. The proposed all-pass filter is made up of solely two transistors as active …

Synthesis of wideband high-quality factor delay-tunable fully differential all-pass filters

MB Elamien, BJ Maundy, L Belostotski… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In this article, all possible wideband fully differential second-order voltage-mode active all-
pass filters (APFs) based on a common-source differential amplifier are systematically …

Wideband third‐order single‐transistor all‐pass filter

MB Elamien, BJ Maundy, L Belostotski… - … Journal of Circuit …, 2020 - Wiley Online Library
In this letter, a third‐order wideband voltage‐mode all‐pass filter (APF) is proposed for
application as a true time delay (TTD) cell. The advantages of designing a single‐stage …

All-pass filter-based 2-D IIR filter-enhanced beamformers for AESA receivers

C Wijenayake, A Madanayake… - … on Circuits and …, 2014 - ieeexplore.ieee.org
An active electronically scanned array (AESA) beamforming method that provides enhanced
selectivity (interference rejection) for the same number of antennas compared to …

Single transistor RC‐only second‐order allpass filters

BJ Maundy, AS Elwakil, L Belostotski… - … Journal of Circuit …, 2020 - Wiley Online Library
In this letter, all possible single transistor RC‐only second‐order allpass filters obtainable
from a four impedance common‐source topology are reported. It is shown that there are only …

Single transistor active filters: What is possible and what is not

AS Elwakil, BJ Maundy - … Transactions on Circuits and Systems I …, 2014 - ieeexplore.ieee.org
This paper systematically investigates the design of single transistor second-order active
filters out-lining all possible architectures and possible impedance settings using an …

6-GHz all-pass-filter-based delay-and-sum beamformer in 130nm CMOS

P Ahmadi, MH Taghavi, L Belostotski… - 2014 IEEE 57th …, 2014 - ieeexplore.ieee.org
A broadband RF delay-and-sum (DAS) beamformer, which employs wide-band CMOS all-
pass filters for achieving the desired time delays, is discussed in this work. The use of all …

CMOS first-order all-pass filter with 2-Hz pole frequency

A Paul, J Ramírez-Angulo… - … Transactions on Very …, 2018 - ieeexplore.ieee.org
A CMOS fully integrated all-pass filter with an extremely low pole frequency of 2 Hz is
introduced in this paper. It has 0.08-dB passband ripple and 0.029-mm 2 Si area. It has 0.38 …