Vahideh Shirmohamadli

Vahideh Shirmohamadli
Simon Fraser University · School of Mechatronic Systems Engineering

Ph.D. Candidate

About

17
Publications
1,233
Reads
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113
Citations
Citations since 2017
7 Research Items
106 Citations
201720182019202020212022202305101520
201720182019202020212022202305101520
201720182019202020212022202305101520
201720182019202020212022202305101520
Additional affiliations
September 2019 - present
Simon Fraser University
Position
  • Research Assistant
September 2015 - June 2019
Khaje Nasir Toosi University of Technology
Position
  • Research Assistant
February 2015 - May 2015
University of Guilan
Position
  • Teacher Assistant
Description
  • Electronics III Laboratory
Education
September 2019 - September 2023
Simon Fraser University
Field of study
  • Mechatronic Systems Engineering
September 2013 - September 2015
University of Guilan
Field of study
  • Electrical and Electronics Engineering
September 2010 - June 2013
University of Guilan
Field of study
  • Electrical and Electronics Engineering

Publications

Publications (17)
Article
The statistical processing of sensor data using conventional digital computers is inefficient in terms of time, energy usage, and communication bandwidth, among others. Therefore, new approaches are sought to create context and make sense of the sensor data using special‐purpose computers that excel in specific computation tasks. Herein, the requir...
Article
The developments in microsensor fabrication over the past few decades have contributed to the availability of a wide range of sensors with varying degrees of performance and cost. Many of the recent waves of technological developments such as the Internet-of-Things or wearables rely on such sensors. With the increasing availability of on-board and...
Article
This paper is to demonstrate an efficient cell capture assay based on employing patterned highly vertical zinc oxide (ZnO) nanorods. Hydrophilic properties of ZnO nanorods, as well as nano topographic nature of the outer surface of cells were exploited as separation mechanism. MCF-7 and MDA-MB-231 breast cancer cell lines were captured on the patte...
Article
In this paper, a microfluidic device is introduced based on direct current (dc) dielectrophoresis for the separation of circulating tumor cells from normal blood cells. Differential sidewall electrodes are designed inside the channel and two middle-channel outlets are located after the end of the electrodes, which are assigned to collect the normal...
Article
This paper deals with mathematical modeling of the particle trajectory inside a microfluidic device based on the application of DC Dielectrophoresis (DEP). The proposed device is designed to separate the breast cancer cell lines (e.g. MDA-MB-231 and MCF-7) from normal blood cells in the specific outlets. A complementary mechanism is employed in the...
Conference Paper
This paper deals with a comprehensive study and comparison on the conventional linear-assisted converter and a new structure named, LDO-assisted converter based on a new class-AB LDO regulator instead of the conventional linear one, in terms of efficiency, output ripple, and load transient response. The new structure reduces difference between inpu...
Conference Paper
In this paper, a new structure based on linear-assisted DC-DC buck converter principle is proposed. Using a segmented LDO regulator instead of the conventional linear one in the hybrid scheme, reduces the difference between input and output voltages and also the switching frequency of the buck converter, while the circuit provides a lower output ri...
Conference Paper
This paper presents an output-capacitorless low-dropout (LDO) regulator based on improved flipped voltage follower power stage for use in power management circuits. A new error amplifier (EA) structure, named as gain-bandwidth enhanced EA, is embedded in the LDO regulator. The LDO regulator is designed for the input and output voltages of 1.2 V and...
Conference Paper
In this paper, a new structure based on linear-assisted DC-DC buck converter principle is proposed. Using a new class-AB LDO regulator instead of the conventional linear one (based on a push-pull output stage) in the hybrid scheme, reduces the difference between input and output voltages and also the switching frequency of the buck converter. Thus,...
Article
This paper proposes the use of double-frequency (DF) buck converter architecture consisting of a merged structure of high and low frequency buck cells as a candidate topology for envelope elimination and restoration (EER) applications and integrated power supply of RF power amplifiers (RFPA) to obtain favorable tradeoffs in terms of efficiency, swi...
Article
A new ultra-wideband common gate low noise amplifier (LNA) for 3–6 GHz WLAN and WPAN applications is presented in which a current reused noise canceling structure utilized in the first stage not only provides a suitable noise performance, but also enhances the linearity characteristics of the LNA in a power efficient manner needed by WLAN/WPAN appl...
Article
In this paper, an ultra-wideband (UWB) CMOS low noise amplifier (LNA) utilizing an active inductor-based input matching network is presented. The proposed 0.18 µm CMOS LNA consists of three stages; a gm-boosted common-gate input stage, a common-source gain stage, and an output buffer. Designed in the 3.1–10.6 GHz UWB frequency range, the proposed c...
Article
This article presents a low quiescent current output-capacitorless quasi-digital complementary metal-oxide-semiconductor (CMOS) low-dropout (LDO) voltage regulator with controlled pass transistors according to load demands. The pass transistor of the LDO is segmented into two smaller sizes based on a proposed segmentation criterion, which considers...
Conference Paper
The use of dual-frequency (DF) buck converter architecture consisting of a merged structure of high and low frequency buck cells is presented as a candidate topology for integrated power management to obtain favorable tradeoffs in terms of efficiency, switching ripple, and bandwidth. It is shown that having two degrees of freedom in designing the D...

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