A5100718225- Radio Frequency Integrated Circuit Design
- Full-Duplex Wireless Communications
- Microwave Engineering and Waveguides
- Biomedical and Engineering Education
- Engineering Education and Curriculum Development
- Banking Sector Performance and Management
- Mechatronics Education and Applications
- Galaxies: Formation, Evolution, Phenomena
- Analog and Mixed-Signal Circuit Design
- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- Astrophysics and Star Formation Studies
- Vehicle emissions and performance
- Photonic and Optical Devices
- Recycling and Waste Management Techniques
- Digital Filter Design and Implementation
- South Asian Studies and Conflicts
- Southeast Asian Sociopolitical Studies
- Wireless Networks and Protocols
- Particle Detector Development and Performance
- Electromagnetic Compatibility and Measurements
- Bluetooth and Wireless Communication Technologies
- Human Rights and Development
- Science and Climate Studies
- Astronomy and Astrophysical Research
Kansas City VA Medical Center
2025
University of Kansas
2025
Samsung (United States)
2024
Healthcare Global Enterprises
2022
Indian Institute of Technology Guwahati
2016-2020
Institute of Technology Management
2018
The Sense Innovation and Research Center
2015
Vellore Institute of Technology University
2015
University at Buffalo, State University of New York
2010-2013
Toshiba (United States)
2010-2013
Input-match, noise figure (NF), in-band (IB) third-order input-referred intercept point (IIP3), out-of-band (OB) IIP3, and power consumption are five crucial performance metrics of a radio frequency (RF) receiver. In typical passive mixer-first receiver, these tightly coupled with each other. this article, second-order baseband noise-canceling (NC) scheme is proposed to break the tradeoffs in an N-path Analytical expressions for input impedance, NF, IB-IIP3, OB-IIP3 NC receiver derived...
Accreting supermassive black holes (SMBHs) frequently power jets that interact with the interstellar/circumgalactic medium (ISM/CGM), regulating star-formation in galaxy. Highly supersonic launched by active galactic nuclei (AGN) a cocoon confines them and shocks ambient medium. We build upon models of narrow conical interacting smooth medium, to include effect dense clouds are an essential ingredient multiphase ISM. The key physical this model is along jet-beam strongly decelerate jet-head,...
This paper presents a frequency-agile in-band full-duplex (FD) receiver based on switched-capacitor continuous-mode vector modulator (VM). The passive VM presented in this provides simultaneous downmixing, attenuation, and phase shifting is used to generate baseband canceler signal for self-interference (SI) cancelation. A prototype FD implemented CMOS 130 nm technology. tunable from 0.1 0.95 GHz. In mode at 900 MHz, the has an effective input-referred third-order intercept power (IIP3) of...
In an effort to increase competition, many countries around the world have changed their economies from monopoly oligopoly. Restructuring of energy sector is considered as a key initiative obtain consumer benefits and social welfare. A power generating company has opportunity maximize profit in electricity market through selling competitive prices under incomplete information other competing generators. day-ahead market, (GENCO) sell at optimal bid prices. this paper problem finding clearing...
Previous works on the "analysis of passive mixer-first receivers" studied effect mixer switch non-idealities linearity and noise figure (NF) receiver. In this work, impact baseband trans-impedance amplifier (TIA) NF an N-path receiver with input match is in detail. It shown that based choice feedback resistance transconductance values used shunt-feedback TIA, can operate one two possible regimes operation: either a noise-limited regime or linearity-limited regime. The receivers designed to...
This paper presents a widely tunable balanced-to-unbalanced (balun) bandpass filter (BPF). The proposed balun uses two 2-port N-path BPFs with embedded quadrature phase shifting to achieve the single-ended differential conversion. Analytical expressions for in-band (IB) (DS) and (SD) voltage gains are derived validated. A prototype is implemented in CMOS 65 nm technology it occupies an active area of ≈ 0.7 mm2. Post-layout simulations show common mode rejection 50 dB during DS operation....
We describe a custom multiple-module multiplexer integrated circuit (MMMIC) that enables the combination of discrete Electron multiplying charge coupled devices (EMCCD) based imaging modules to improve medical systems. It is highly desirable have flexible systems provide high spatial resolution over specific region interest (ROI) and field view (FOV) large enough encompass areas clinical interest. Also, such should be dynamic, i.e. able maintain specified acquisition bandwidth irrespective...
A microring-assisted Mach-Zehnder interferometer has been studied. The structure demonstrates better extinction ratio, eye opening and bandwidth than a single microring modulator. of the ring-assisted can be further tailored by controlling amount light coupled to each arms. 7 dB improvement in ratio over that standalone micro-ring device is observed for 7.54 µm ring radius when operated over-coupled regime at around 1310 nm wavelength.
A high resolution (up to 11.2 lp/mm) x-ray detector with larger field of view (8.5 cm × 8.5 cm) has been developed. The is a 2 array individual imaging modules based on EMCCD technology. Each module outputs frame size 1088 1037 pixels, each 12 bits. frames from the 4 are acquired into processing computer using one two techniques. first uses CameraLink communication channels carrying information modules, second application specific custom integrated circuits, Multiple Module Multiplexer...
Present day treatment for neurovascular pathological conditions involves the use of devices with very small features such as stents, coils, and balloons; hence, these interventional procedures demand high resolution x-ray imaging under fluoroscopic to provide capability guide deployment fine endovascular devices. To address this issue, a detector based on EMCCD technology is being developed. The field-of-view enlarged using fiber-optic taper so that an effective pixel size 37 µm giving it...
Recent advances in passive mixer-first receivers enhanced the frequency-blocker tolerance of radio-frequency (RF) receivers. These receiver architectures are also extended to Multi-Input Single-Output (MISO) The current state-of-art Multi-Output (MIMO) still use a low-noise amplifier (LNA) as first block, thus have low tolerance. This paper presents Butler-matrix based <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathrm{4} \times...
This paper presents a transformer-less duplexer based on 2-port N-path bandpass filters (BPFs). The proposed consists of two quarter-wavelength transmission lines, and an balun BPF which provides out-of-band (OOB) blocker support for the receiver. A 0.45-0.65 GHz is implemented in CMOS 65 nm technology. occupies active area ≈ 0.7 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . In post-layout simulations, has > 55 dB...
In the Global scenario, a variety of wireless access networks are available. Heterogeneous Wireless Networks is an integration two different (Cellular and WLAN). When connections need to migrate between heterogeneous networks, vertical handoff required provide best performance better QoS. With reference VHO, there acute develop algorithm for Mission Critical Management thus improving network performance. During disaster management operations, possibility failure in connectivity...
This paper presents an alternative approach to design reconfigurable mixed signal distributed arithmetic (DA) based finite impulse response (FIR) filter. The proposed architecture is on the use of normal CMOS transistor for various computational blocks involved in filter design. To maintain reconfigurability, electrically erasable programmable read only memory (EEPROM) potentiometer (POT) also employed that stores analog weights. Moreover, weights are separately added last cycle...