Work place: Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Andhra Pradesh, India-522302
E-mail: spandanaklu@gmail.com
Website: https://orcid.org/ 0009-0000-7412-2156
Research Interests:
Biography
Saggurthi Spandana is a researcher and academic affiliated with the Department of Electronics and Communication Engineering at KLEF, Vaddeswaram, India, with a strong focus on RF and analog circuit design, particularly low-noise amplifiers (LNAs) and IoT front-end systems. She has extensive experience with evolutionary and swarm-based optimization techniques such as NSGA-II, PSO, MOPSO, QPSO, and PAES for optimizing LNA performance, and her work also integrates machine learning and deep learning methods, including CNNs and GANs, for automated circuit design and noise analysis. Her research interests span RFIC design, TFET and nanosheet transistors, multi-objective optimization, and AI-based design automation. In addition, she has been involved in digital design using Xilinx tools, working on FPGA-based implementations and digital systems design using the Basys3 board. https://orcid.org/ 0009-0000-7412-2156
By Inturu Bhavani Siva Phanindra Shaik Hasane Ahammad J. Sivavara Prasad Saggurthi Spandana Ahmed Nabih Zaki Rashed
DOI: https://doi.org/10.5815/ijem.2026.03.16, Pub. Date: 8 Jun. 2026
Hand-drawn circuit diagrams must be manually converted into hardware description languages (HDLs) for digital design workflows. This manual conversion is time-consuming and error-prone and there has been little focus on hardware validation along the entire end-to-end circuit design process (such as circuit recognition and code generation). In response to these challenges, we present Sketic-FPGA, an end-to-end machine learning-based automated framework for converting hand-drawn logic circuits into functionally verified implementations on FPGA devices. The Sketic-FPGA system operates in a six-stage pipeline consisting of: adaptive image preprocessing, gate detection using an improved Faster R-CNN with ResNet-50 backbone, topology extraction, synthesis-aware Verilog code generation, automated FPGA implementation using Xilinx Vivado toolchain, and hardware-level validation. The proposed model was trained with 800 annotated samples across eight classes of logic gates, utilizing rotation-aware detection and curriculum learning to improve robustness. When evaluated against a dataset of 200 previously-unseen, test circuits, Sketic-FPGA produced 99.2% detection accuracy and 98.8% classification accuracy. All designs generated with Sketic-FPGA were successfully synthesized and implemented onto actual FPGA hardware, achieving functional correctness across the entire test circuit dataset using LED testing, Integrated Logic Analyzer (ILA) waveform verification, and exhaustive truth-table validation. On average, processing each circuit took 29.4 seconds from start to finish which has reduced the time required for a designer to create a circuit manually. An examination of how long it took students to design a circuit revealed that they spent 67% less time across multiple design iterations. Although we have only demonstrated the effectiveness of our framework on combinational circuits and in a controlled environment, our results indicate that there are many opportunities for rapid prototyping and automated hardware design as well as support for digital educational methods.
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