Current mode filter structure based on dual output transconductance ampifiers

1996 ◽  
Vol 32 (1) ◽  
pp. 25 ◽  
Author(s):  
B. Al-Hashimi
Keyword(s):  
Current Mode ◽  
Filter Structure

HIGH-ORDER MULTIPLE-MODE AND TRANSADMITTANCE-MODE OTA-C UNIVERSAL FILTERS

2012 ◽  
Vol 21 (05) ◽  
pp. 1250048 ◽  
Author(s):  
CHEN-NONG LEE
Keyword(s):  
Current Mode ◽  
High Order ◽  
Point Of View ◽  
Chip Area ◽  
Operational Transconductance Amplifiers ◽  
Filter Structure ◽  
Multiple Mode ◽  
Input Signals ◽  
Theoretical Predictions ◽  
Low Sensitivity

This paper presents two new high-order OTA-C universal filters. The first proposed filter structure employs n + 3 operational transconductance amplifiers (OTAs) and n grounded capacitors, which can realize nth-order multiple-mode (including voltage, current, transadmittance, and transimpedance modes) universal filtering responses (lowpass, highpass, bandpass, bandreject, and allpass) from the same topology. Since the OTA has high input and output impedances, it is very suitable for transadmittance-mode circuit applications. Therefore, a new high-order transadmittance-mode OTA-C universal filter structure using the minimum components is introduced. The second proposed filter structure uses only n + 1 OTAs and n grounded capacitors, which are the minimum components necessary for realizing nth-order transadmittance-mode universal filtering responses (lowpass, highpass, bandpass, bandreject, and allpass) from the same topology. This represents the attractive feature from chip area and power consumption point of view. Moreover, the two new OTA-C universal filters still enjoy many important advantages: no need of extra inverting or double-type amplifiers for special input signals, using only n grounded capacitors, no need of any resistors, cascadably connecting the former voltage-mode stage and the latter current-mode stage, and low sensitivity performance. H-Spice simulations with TSMC 0.35 μm process and ±1.65 V supply voltages are included and confirm the theoretical predictions.

Editorial. Current-mode analogue signal processing

1990 ◽  
Vol 137 (2) ◽  
pp. 61 ◽  
Author(s):  
Chris Toumazou ◽  
John Lidgey ◽  
Brett Wilson
Keyword(s):  
Signal Processing ◽  
Current Mode ◽  
Analogue Signal

New Approach for IIR Adaptive Lattice Filter Structure Using Simultaneous Perturbation Algorithm

2010 ◽  
Vol 130 (4) ◽  
pp. 422-429
Author(s):  
Jorge Ivan Medina Martinez ◽  
Kazushi Nakano ◽  
Kohji Higuchi
Keyword(s):  
New Approach ◽  
Lattice Filter ◽  
Filter Structure

DC to Single-Phase AC Grid Connected Inverter with Boost Type Active Buffer Circuit Operated in Discontinuous Current Mode

2018 ◽  
Vol 138 (5) ◽  
pp. 453-462
Author(s):  
Jun-ichi Itoh ◽  
Tomokazu Sakuraba ◽  
Hoai Nam Le ◽  
Hiroki Watanabe ◽  
Keisuke Kusaka
Keyword(s):  
Single Phase ◽  
Current Mode ◽  
Grid Connected Inverter
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