ABIDI Projects
GSME-FAST Oman-2 IC Block Diagram
GSME-FAST Oman-2 IC Block Diagram (Detailed)
FM Radio Receiver
An FM radio receiver capable of receiving and demodulating 1GHz FM radio signals was designed using the Cadence Virtuoso environment and the TSMC 65nm process. The receiver consists of key components such as an antenna, low noise amplifier (LNA), mixer, band pass filter, and demodulator.
Tunable Multiband (875-925MHz) PLL for Multi-Channel Radio Receiver
We analyzed the phase noise characteristics of a Phase-Locked Loop (PLL) system, focusing on the effects of loop bandwidth and noise sources like reference noise and VCO noise. Our results showed phase noise improvements at various frequencies (900 MHz, 920 MHz, and 932 MHz), with phase noise decreasing as control voltage increased, validating the PLL's efficiency in minimizing noise close to the carrier.
50MHz Sample ADC for Radio Digitization
A 25 MSPS (Million Samples Per Second) 8-bit two-stage flash ADC is designed for efficiency, with a 33 MSPS rate to handle 1-10 MHz baseband signals. The two-stage approach divides the conversion between two ADCs: a coarse ADC resolves the most significant bits (MSBs) and generates a reference voltage via a DAC.
AI-Based Voice Recognition of Multi-Channel Radio
A voice recognition system for reciting the Holy Quran, trained to distinguish between two different reciters. Four classifiers were evaluated, with Linear SVM chosen as the best performer. Experiments showed a direct correlation between the number of input samples and accuracy; a sample size of 8192 yielded an accuracy of 98.35%.
Baseband Processor for Multi-Channel Radio
A digital baseband processor featuring components such as a counter-based demodulator, down sampler, FIR filter, resistor string-based DAC, and two-stage OP-AMP. Key performance outcomes include a filter with a 24 kHz cut-off frequency, DAC results showing an SNR of 42.47 dB and ENOB of 6.72 bits, and successful down sampling to reduce frequency to 200 kHz.
CMOS LDO, Rectifier, and Band Gap Reference Based Power Management (PMIC)
A compact and reliable power supply system that adjusts output voltage and converts AC to DC. The system comprises three key components: an active rectifier for AC-to-DC conversion, a band-gap reference (BGR) that provides a temperature-independent voltage, and a low-dropout voltage regulator (LDO) that maintains a steady output voltage for on-chip circuits.
Sensor and ADC based Data Acquisition Circuit
An on-chip temperature, voltage, and current sensor, integrated with an ADC-based data acquisition circuit. The sensor system, implemented in 65nm CMOS technology, provides high-precision measurements for a wide range of parameters. The 8-bit ADC enables accurate conversion of analog signals to digital, achieving an ENOB of 6.2, an SFDR of 44.07 dBc, and an SNR of 39.59 dB.
Arbiter and Data Controller
An Arbiter and Data Controller for a GSME tapeout project, designed to efficiently manage and control data flow within systems. Key components include a 4x1 Multiplexer (MUX) for input selection, a First-In-First-Out (FIFO) memory for data storage, an LCD driver to display information, and optional interfaces such as SPI (Serial Peripheral Interface).
Approximate Computing Engine
Designed to address the increasing demand for high-speed and energy-efficient computing, particularly in AI applications. By allowing for small approximations or errors in computations, these engines reduce power consumption and improve processing speed, making them valuable for tasks that do not require perfect precision.