A Bandpass Filter Incorporated Into the Inductor Current Feedback Path for Improving Dynamic Performance of the Front-End DC–DC Converter in Two-Stage Inverter

This article presents a new topology for implementing an electronically tunable bandpass filter using the current-feedback operational amplifier. The electronic tuning of the center frequency of the proposed circuit is achieved using an externally connected voltage amplifier in the feedback path without disturbing the constituents of the filter itself, that is a shadow filter. The proposed circuit can be used for developing an undergraduate experiment which illustrates the operation of bandpass filter and the electronic control of its center frequency using the concept of shadow filter. Experimental results obtained using the AD844 current-feedback operational amplifier are included.

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Second harmonic current reduction and dynamic performance improvement in the two-stage inverters: An output impedance perspective

2014 IEEE Energy Conversion Congress and Exposition (ECCE) ◽

10.1109/ecce.2014.6953531 ◽

2014 ◽

Author(s):

Li Zhang ◽

Xinbo Ruan ◽

Xiaoyong Ren

Keyword(s):

Performance Improvement ◽

Second Harmonic ◽

Dynamic Performance ◽

Output Impedance ◽

Harmonic Current ◽

Two Stage ◽

Current Reduction

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Unitary vs. Resistive Feedback in CMOS Two-Stage Indirect Current Feedback Instrumentation Amplifiers

2020 27th IEEE International Conference on Electronics, Circuits and Systems (ICECS) ◽

10.1109/icecs49266.2020.9294807 ◽

2020 ◽

Author(s):

Israel Corbacho ◽

Juan M. Carrillo ◽

Jose L. Ausin ◽

Miguel A. Dominguez ◽

J. Francisco Duque-Carrillo

Keyword(s):

Two Stage ◽

Current Feedback ◽

Resistive Feedback

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Second Harmonic Current Reduction in Front-End DC−DC Converter for Two-Stage Single-Phase Photovoltaic Grid-Connected Inverter

IEEE Transactions on Power Electronics ◽

10.1109/tpel.2018.2877590 ◽

2019 ◽

Vol 34 (7) ◽

pp. 6399-6410 ◽

Cited By ~ 7

Author(s):

Shiqi Kan ◽

Xinbo Ruan ◽

Hao Dang ◽

Li Zhang ◽

Xinze Huang

Keyword(s):

Single Phase ◽

Second Harmonic ◽

Harmonic Current ◽

Two Stage ◽

Front End ◽

Grid Connected Inverter ◽

Current Reduction

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An LTCC Based Filter and Front End Module using Heterogeneous Dielectrics

Journal of Microelectronics and Electronic Packaging ◽

10.4071/1551-4897-3.3.129 ◽

2006 ◽

Vol 3 (3) ◽

pp. 129-135 ◽

Cited By ~ 1

Author(s):

Jun Chul Kim ◽

Dongsu Kim ◽

Hyun Min Cho ◽

Jong Chul Park ◽

Nam Kee Kang

Keyword(s):

Power Amplifier ◽

Bandpass Filter ◽

Wave Length ◽

Signal Delay ◽

Ceramic Substrates ◽

Front End ◽

Quarter Wave ◽

Front End Module ◽

Signal Delay Time ◽

Shunt Capacitor

This paper presents a multi-layered bandpass filter (BPF) and a power amplifier module (PAM) integrated with a SAW duplexer based on heterogeneous ceramic substrates. The heterogeneous substrates are composed of two different ceramic layers with εr = 7.4 and 17.5 in order to take advantage of their own properties. In the PAM substrate, a DC blocking capacitor and a shunt capacitor for an output matching network of a power amplifier are embedded with a material of εr = 17.5 to reduce occupied areas of the capacitors. On the other hand, a quarter-wave-length stripline and RF chokes are realized with a material of εr = 7.4 to reduce signal delay time. In the multi-layered BPF, a coupled stripline and a high shunt capacitor are embedded with materials of εr = 7.4 and 17.5, respectively, resulting in improved spurious characteristics.

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