Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter
This paper describes the design of a current-mode single-input multiple-output (SIMO) universal filter based on the log-domain filtering concept. The circuit is a direct realization of a first-order differential equation for obtaining the lossy integrator circuit. Lossless integrators are realized b...
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Format: | Article |
Language: | English |
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Spolecnost pro radioelektronicke inzenyrstvi
2013-06-01
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Series: | Radioengineering |
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Online Access: | http://www.radioeng.cz/fulltexts/2013/13_02_0474_0484.pdf |
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author | P. Prommee K. Dejhan |
author_facet | P. Prommee K. Dejhan |
author_sort | P. Prommee |
collection | DOAJ |
description | This paper describes the design of a current-mode single-input multiple-output (SIMO) universal filter based on the log-domain filtering concept. The circuit is a direct realization of a first-order differential equation for obtaining the lossy integrator circuit. Lossless integrators are realized by log-domain lossy integrators. The proposed filter comprises only two grounded capacitors and twenty-four transistors. This filter suits to operate in very high frequency (VHF) applications. The pole-frequency of the proposed filter can be controlled over five decade frequency range through bias currents. The pole-Q can be independently controlled with the pole-frequency. Non-ideal effects on the filter are studied in detail. A validated BJT model is used in the simulations operated by a single power supply, as low as 2.5 V. The simulation results using PSpice are included to confirm the good performances and are in agreement with the theory. |
first_indexed | 2024-04-12T12:44:19Z |
format | Article |
id | doaj.art-88679997b8ca46c299872c4949c25f85 |
institution | Directory Open Access Journal |
issn | 1210-2512 |
language | English |
last_indexed | 2024-04-12T12:44:19Z |
publishDate | 2013-06-01 |
publisher | Spolecnost pro radioelektronicke inzenyrstvi |
record_format | Article |
series | Radioengineering |
spelling | doaj.art-88679997b8ca46c299872c4949c25f852022-12-22T03:32:41ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122013-06-01222474484Single-input Multiple-output Tunable Log-domain Current-mode Universal FilterP. PrommeeK. DejhanThis paper describes the design of a current-mode single-input multiple-output (SIMO) universal filter based on the log-domain filtering concept. The circuit is a direct realization of a first-order differential equation for obtaining the lossy integrator circuit. Lossless integrators are realized by log-domain lossy integrators. The proposed filter comprises only two grounded capacitors and twenty-four transistors. This filter suits to operate in very high frequency (VHF) applications. The pole-frequency of the proposed filter can be controlled over five decade frequency range through bias currents. The pole-Q can be independently controlled with the pole-frequency. Non-ideal effects on the filter are studied in detail. A validated BJT model is used in the simulations operated by a single power supply, as low as 2.5 V. The simulation results using PSpice are included to confirm the good performances and are in agreement with the theory.www.radioeng.cz/fulltexts/2013/13_02_0474_0484.pdfLog-domain filteringvery high frequencylow-voltageelectronically-controlleduniversal filter |
spellingShingle | P. Prommee K. Dejhan Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter Radioengineering Log-domain filtering very high frequency low-voltage electronically-controlled universal filter |
title | Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter |
title_full | Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter |
title_fullStr | Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter |
title_full_unstemmed | Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter |
title_short | Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter |
title_sort | single input multiple output tunable log domain current mode universal filter |
topic | Log-domain filtering very high frequency low-voltage electronically-controlled universal filter |
url | http://www.radioeng.cz/fulltexts/2013/13_02_0474_0484.pdf |
work_keys_str_mv | AT pprommee singleinputmultipleoutputtunablelogdomaincurrentmodeuniversalfilter AT kdejhan singleinputmultipleoutputtunablelogdomaincurrentmodeuniversalfilter |