Md. Imtiaz KamrulUniversity of Alabama | UA · Department of Electrical and Computer Engineering
Md. Imtiaz Kamrul
Doctor of Philosophy
I am currently involved as a Graduate Research Associate at the University of Alabama.
About
14
Publications
15,951
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35
Citations
Introduction
Currently, I'm pursuing my PhD and working as a Graduate Research Assistant at the University of Alabama, focusing on the design of mmWave and microwave wireless systems, advanced antenna technology, and electromagnetic-wave imaging systems. Backed by my prior experience as a Research Assistant at the Seoul National University of Science and Technology, where I honed my expertise in millimeter wave and material characterization. I'm committed to pushing the boundaries of wireless communication.
Additional affiliations
November 2018 - present
Education
August 2023 - December 2028
March 2021 - February 2023
March 2014 - November 2018
Field of study
- Electronic and Telecommunication Engineering
Publications
Publications (14)
This paper proposed a low-profile and compact miniaturized Vivaldi antenna for a non-invasive, rapid, non-ionizing, and cost-effective microwave imaging system. This antenna incorporates both the open and closed slots to provide broad impedance matching from 3.32–8.71 GHz. The low-cost FR4 38.5×47.45×0.8 mm3 is used as a substrate. The antenna show...
The paper proposes a broadband design and measurement of insertion loss (IL) based on direct metallized polyimide for Flexible Copper-Clad Laminate (FCCL), a crucial foundational material for a variety of applications such as mobile devices, wearable electronics, and point-of-biosensors. We designed a grounded coplanar waveguide transmission line a...
The technological trend of replacing the existing ceramic antenna and coaxial cable with the flexible PCB (FPCB)
and feed line integrated module has recently attracted much attention. Several studies have been done to
improve the insertion loss of the FPCB, e.g., an attempt to develop a lower insertion loss than the conventional
FPCB with an adhesi...
Nowadays high-frequency bands including microwave and mmWave bands have created a lot of opportunities through a wider band rather than the existing commercial frequency band. It can provide very high data rates of Gbps class to accommodate various applications requiring very high throughput. However, due to the characteristics of higher frequency,...
The demand for flexible PCBs has also steadily increased in recent years. The primary material of flexible substrates is flexible copper-clad laminates (FCCLs). We investigated the properties of FCCL substrates made of polyimides, as well as the insertion loss of the CPW Ground Microstrip transmission line using a TRL (Thru-Reflect-Line) calibratio...
Due to the extensive use of lower frequency bands & huge demand of large bandwidth in satellite communications, engineers need to use the higher frequency bands such as Ku to Ka bands. However, the rain attenuation is severe in these bands. Before installing an earth station, the estimation of the rain attenuation is a prerequisite task to know the...
With the impetuous improvement of cyber intelligence and networking technology, cybersecurity becomes an important area of research. Domain name system (DNS) has been an essential aspect of cyber security and a crucial part of internet services. The nameservers are responsible for the functionality and safety of their corresponding domain names. Bu...
Surveillance is the monitoring of the behavior, activities or other changing information whereas security means the state of being protected from harmful activities. Nowadays proper surveillance security is considered as a challenging issue in the world and security has become a major concern from real life to virtual life. Tech-giants are implemen...
Breast cancer is a deadly disease for women and it is one of the rapidly increasing diseases of the world. To prevent the diseases, it should be detected at a very primary stage. Researchers completed many researches to detect the cancer cell accurately. Among these researches, Circular Patch Antenna, Ultra Wideband (UWB) Antenna and Microstrip Pat...
Questions
Questions (18)
I am interested in visualizing the fringing field effects at the antenna ends. Are there any specific visualization options in HFSS that can highlight the fringing fields?
Any tips would be much appreciated!
I've attached a photo of two models. Model 1 does not have a slot, whereas model 2 does. If you look at both of these models' radiation patterns after adding a slot, the radiation pattern in the xz plane or phi=90 appears asymmetric! There is no form of asymmetric behavior without a slot!
How would you explain the asymmetric radiation pattern in the H-plane for a coplanar Vivaldi antenna?
𝐇𝐞𝐫𝐞'𝐬 𝐭𝐡𝐞 𝐡𝐚𝐫𝐬𝐡 𝐭𝐫𝐮𝐭𝐡 𝐚𝐛𝐨𝐮𝐭 𝐭𝐡𝐞 𝐑𝐨𝐥𝐞 𝐨𝐟 𝐒𝐢𝐦𝐮𝐥𝐚𝐭𝐢𝐨𝐧 𝐓𝐨𝐨𝐥𝐬 𝐢𝐧 𝐀𝐧𝐭𝐞𝐧𝐧𝐚 𝐃𝐞𝐬𝐢𝐠𝐧:
they're the backbone of true innovation and efficiency!
Simulation tools act like silent superheroes, allowing engineers try hundreds iterations of one possible design, and avoid the need for endless physical prototypes.
I am sure that with proper simulation 90% of designs can get by with only ONE prototype round, significantly saving time and budget.
🔷 Let me know what simulation software you use in your work, what are pros/cons?
How can I improve the S11 of a Vivaldi antenna to less than -20dB for 5-9 GHz bandwidth? The material is FR4, so what can I include here to improve the geometry?
Why is the radiation pattern not oriented to the 0 degree? I got this raditaion pattern after simulation, but I wonder to know that why is the radiation pattern not oriented to the 0 degree instead of 90 dgree?
Is there a simple way to calculate the impedance of a coplanar Vivaldi antenna?
Is there anyone who can help me in finding the appropriate template for this Elsevier journal?
I'd like to address one of my concerns regarding multiline TRL calibration. After calibrating a frequency, I occasionally did not get the expected result. If you look at my attachment, you'll notice that after calibration in some frequency ranges, it shows a sharp curve above 0dB (sometimes).
Is there anyone who can say me why this type of error occurred?
I am trying to design a CPW-GCPW tapered transition. Can anyone recommend a book or a reference for these types of transition structures? (Like how to calculated the tapered length etc.)
My computer suddenly restarted itself. Then I can't read/open my most recent working project? Is it possible to read/open it?
It is very important to open this file. I've attached a screenshot of the error.
Thank you in advance..
I've included an example picture. Is this transition followed by Quarter Wave transfer rules? or, Can anyone assist me in properly identifying this transition section?
If we connect the top and ground metal layers with a lot of Via, will the parasitic capacitance increase or decrease? As far as I know, it will reduce resistance.
