Publication detail

Pole Frequency and Pass-Band Gain Tunable Novel Fully-Differential Current-Mode All-Pass Filter

HERENCSÁR, N. JEŘÁBEK, J. KOTON, J. VRBA, K. MINAEI, S. GÖKNAR, I. C.

Original Title

Pole Frequency and Pass-Band Gain Tunable Novel Fully-Differential Current-Mode All-Pass Filter

Czech Title

Pole Frequency and Pass-Band Gain Tunable Novel Fully-Differential Current-Mode All-Pass Filter

English Title

Pole Frequency and Pass-Band Gain Tunable Novel Fully-Differential Current-Mode All-Pass Filter

Type

conference paper

Language

en

Original Abstract

In this paper, a new realization of a fully-differential (F-D) first-order all-pass filter (APF) operating in current mode (CM) is presented. In the proposed F-D CM APF a single adjustable current amplifier (ACA) and two current followers (CFs) with non-unity gain are used as active building blocks. Considering the input intrinsic resistance of CFs as useful active filter parameter, the proposed filter employs only a floating capacitor as external passive component. The pole frequency of the proposed resistorless circuit can be tuned via mutual change of input intrinsic resistance of CFs while the filter pass-band gain by means of gain of ACA. The theoretical results are verified by SPICE simulations, where TSMC 0.18 μm level-7 SCN018 CMOS process parameters were used.

Czech abstract

In this paper, a new realization of a fully-differential (F-D) first-order all-pass filter (APF) operating in current mode (CM) is presented. In the proposed F-D CM APF a single adjustable current amplifier (ACA) and two current followers (CFs) with non-unity gain are used as active building blocks. Considering the input intrinsic resistance of CFs as useful active filter parameter, the proposed filter employs only a floating capacitor as external passive component. The pole frequency of the proposed resistorless circuit can be tuned via mutual change of input intrinsic resistance of CFs while the filter pass-band gain by means of gain of ACA. The theoretical results are verified by SPICE simulations, where TSMC 0.18 μm level-7 SCN018 CMOS process parameters were used.

English abstract

In this paper, a new realization of a fully-differential (F-D) first-order all-pass filter (APF) operating in current mode (CM) is presented. In the proposed F-D CM APF a single adjustable current amplifier (ACA) and two current followers (CFs) with non-unity gain are used as active building blocks. Considering the input intrinsic resistance of CFs as useful active filter parameter, the proposed filter employs only a floating capacitor as external passive component. The pole frequency of the proposed resistorless circuit can be tuned via mutual change of input intrinsic resistance of CFs while the filter pass-band gain by means of gain of ACA. The theoretical results are verified by SPICE simulations, where TSMC 0.18 μm level-7 SCN018 CMOS process parameters were used.

Keywords

all-pass filter; current-mode; current follower; adjustable current amplifier; fully-differential filter; tunable filter

RIV year

2015

Released

27.05.2015

Location

Lisbon, Portugal

ISBN

978-1-4799-8391-9

Book

Proceedings of the IEEE International Symposium on Circuits and Systems (ISCAS)

Pages from

2668

Pages to

2671

Pages count

4

BibTex


@inproceedings{BUT117500,
  author="Norbert {Herencsár} and Jan {Jeřábek} and Jaroslav {Koton} and Kamil {Vrba} and Shahram {Minaei} and Izzet Cem {Göknar}",
  title="Pole Frequency and Pass-Band Gain Tunable Novel Fully-Differential Current-Mode All-Pass Filter",
  annote="In this paper, a new realization of a fully-differential (F-D) first-order all-pass filter (APF) operating in current mode (CM) is presented. In the proposed F-D CM APF a single adjustable current amplifier (ACA) and two current followers (CFs) with non-unity gain are used as active building blocks. Considering the input intrinsic resistance of CFs as useful active filter parameter, the proposed filter employs only a floating capacitor as external passive component. The pole frequency of the proposed resistorless circuit can be tuned via mutual change of input intrinsic resistance of CFs while the filter pass-band gain by means of gain of ACA. The theoretical results are verified by SPICE simulations, where TSMC 0.18 μm level-7 SCN018 CMOS process parameters were used.",
  booktitle="Proceedings of the IEEE International Symposium on Circuits and Systems (ISCAS)",
  chapter="117500",
  doi="10.1109/ISCAS.2015.7169235",
  howpublished="online",
  year="2015",
  month="may",
  pages="2668--2671",
  type="conference paper"
}