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Circuits and Systems (CS) is an international journal dedicated to the latest advancements in circuits and systems. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of circuits and…
Sheikh Ajaz Bashir, Nisar Ahmed Shah
Integrated filter circuit design resulted in desire for replacement of Inductors by active elements like Operational Amplifiers which led to the introduction of active filters. Active filter design has evolved over a period of time. Starting with OP AMPs, we…
Palaniandavar Venkateswaran, Rabindranath Nandi, Sagarika Das
Using the new building block Multiplication-Mode Current Conveyor (MMCC), some inverting/non-inverting type integrator and differentiator designs are presented, wherein the time constant (τ) is tuned electronically. The MMCC is implemented by a readily availa…
Aazar Saadaat Kashi, Mahmoud Kamarei, Mohsen Javadi
A method to predict intermodulation (IM) products of two tone test based on Amplitude to amplitude (AM-AM) and amplitude to phase (AM-PM) diagrams of power amplifier is proposed in this paper. An RF power amplifier is mathe-matically modeled by a power series…
Hiroshi Makino, Naoya Okada, Tetsuya Matsumura, Koji Nii, Tsutomu Yoshimura, Shuhei Iwade, Yoshio Matsuda
An accelerated evaluation method for the SRAM cell write margin is proposed using the conventional Write Noise Margin (WNM) definition based on the “butterfly curve”. The WNM is measured under a lower word line voltage than the power supply voltage VDD. A low…
Vladimir L. Lanin
Processes of high-frequency (HF) heating are examined and its parameters for the soldering of electronic modules are optimized. The advantages of HF heating are the following: selectivity by skin-effect; high density of energy; process- ing in any environment…
Wagah F. Mohammed, Omar Daoud, Munther Al-Tikriti
One of the most promising solar cell devices is cadmium telluride (CdTe) based. These cells however, have their own problems of stability and degradation in efficiency. Measurements show that CdS/CdTe solar cell has high series resistance which degrades the p…
Nizar Zrigui, Lahbib Zenkouar, Seddik Bri
The mobile communication (radio, mobile, satellite telephony…) insert band filters which are required to comply with stringent pass-band characteristics concerning the selectivity, the group delay, the insertion losses and the mass and volume. The mass and vo…
Yousif Al Mashhadany, Semeh Jassam, Amead Sami, Hebaa Nassar
The recent rapid development of electronics and continual increase of the complexity and variety of electronic circuits (chips, packets, micro- and embedded systems) creates a demand for viable test and diagnostic methods. These recent developments have led t…
Assim Sagahyroon, Jamal Abdalla
The increase in issue width and instructions window size in modern processors demand an increase in the size of the register files, as well as an increase in the number of ports. Bigger register files implies an increase in power consumed by these units as we…
Kavuri Kasi Annapurna Devi, Norashidah Md. Din, Chandan Kumar Chakrabarty
This paper presents an optimization of the voltage doubler stages in an energy conversion module for Radio Frequency (RF) energy harvesting system at 900 MHz band. The function of the energy conversion module is to convert the (RF) signals into direct-current…
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Circuits and Systems (CS) is an international journal dedicated to the latest advancements in circuits and systems. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of circuits and… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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