About

Ridha Kamoua is an Associate Professor and Undergraduate Program Director at the Department of Electrical and Computer Engineering at Stony Brook University. His research focuses on solid-state devices and circuits, microwave devices, and integrated circuits. His work involves the development and analysis of electronic components and systems, contributing to advancements in microwave and solid-state electronics. As a faculty member, he is engaged in teaching and mentoring students, as well as conducting research that supports the department's mission to innovate in electrical engineering.

Research topics

• Optoelectronics
• Materials science
• Computer science
• Physics
• Electrical engineering

Selected publications

• Scattering assisted injection based injectorless mid infrared quantum cascade laser

  Journal of Applied Physics · 2014-06-05 · 3 citations

  articleSenior author

  An injectorless five-well mid infrared quantum cascade laser is analyzed which relies on phonon scattering injection in contrast to resonant tunneling injection, which has been previously used for injectorless designs. A Monte Carlo based self-consistent electron and photon transport simulator is used to analyze the performance of the analyzed design and compare it to existing injectorless designs. The simulation results show that the analyzed design could greatly enhance the optical gain and the characteristic temperatures of injectorless quantum cascade lasers (QCLs) which have typically been hindered by low characteristic temperatures and significant temperature related performance degradation. Simulations of the analyzed device predict threshold current densities of 0.85 kA/cm2 and 1.95 kA/cm2 at 77 K and 300 K, respectively, which are comparable to the threshold current densities of conventional injector based QCLs.

  PublisherDOI

• Personal asset tracking

  2013-05-01 · 2 citations

  articleSenior author

  We aim to design and provide a compact security system for keeping track of personal belongings or assets. If a registered asset is out of a range of 5 feet, the monitoring system will alert the user. The tracking system is mainly composed of a mobile transmitting module and a receiving module carried by a person. Personal objects (such as passport, mobile phones, laptops and portable devices) are attached with the transmitting module and a receiving module is used to track and secure different objects. The transmitting module consists of encoding circuit and wireless transmitting circuit. And the receiving module is composed of receiving, decoding and alert circuits. In addition, the personal asset tracking system can identify the item and the time when it was lost.

  PublisherDOI

• Sleep apnea diagnostic device

  2011-05-01 · 1 citations

  articleSenior author

  Sleep apnea is a disorder in which people are unable to breathe while they are sleeping. The goal of this project is to design a medical device that can be used as a diagnostic tool for preliminary diagnosis of sleep apnea. The signals measured will be the respiratory rate measurement, the oxygen concentration in blood and chest oscillations. The system architecture will be divided into 5 parts, the microcontroller, the external communications, data storage, power management, and signal conditioning part. The data stored will be transmitted wirelessly to a clinic's office. The physician can interpret the data received from the medical device the next morning and conclude what the patient's condition is. There will be sensors designed to measure airflow, temperature and oxygen level. The design for the airflow and temperature measurements will be made through a Wheatstone Bridge circuit using thermistors. To measure the saturation of oxygen in the blood, a pulse oximetry technique will be used. Also, to measure chest oscillations, an accelerometer will be used. The sleep apnea diagnostic device will be available at a low cost and can be administered at home, so patients can afford to purchase it. The device will also reduce costs for the patient because the patient does not have to pay for an overnight stay at the clinic to determine if he or she has sleep apnea. High costs may occur if the doctor decides the patient needs further tests, but for patients who do not have sleep apnea, however think they are inflicted with the disorder, will not have to pay for an expensive one night stay at the clinic.

  PublisherDOI

• Eagle O: A semi-autonomous robot

  2011-05-01

  articleSenior author

  Autonomous robots have many applications in manufacturing industry, space exploration, defense research, etc. The goal of this project, codenamed Eagle O, is to build a semi-autonomous robot. Robots can have autonomous characteristic to varying degrees. Eagle O is being developed with semi-autonomous characteristics. A control system is being implemented for directing the robot using a remote machine. Having semi-autonomous characteristics, Eagle O can direct itself in hazardous situations. Other key characteristic include following a light source for navigation purposes, autonomously traversing in hazardous conditions, and capturing physical data in real-time mode. The other goal behind Eagle O project is to develop a model for space exploration robots. It is very unlikely Eagle O robot will be operated in space.

  PublisherDOI

• Wireless health monitoring system

  2010-05-01 · 25 citations

  article

  Rapid advances in wireless communication devices and systems had and continue to have a significant impact on the healthcare industry. One important application is to monitor patient's health status anytime and anywhere without restricting the patient's movement as a result of being tied down through cables to monitoring equipment. Through the miniaturizations of sensors and the use of wireless interface to transmit the data recorded by the sensors, health care monitoring can be extended beyond the hospital confines. This is regarded as a core technology for deployment of ubiquitous healthcare in home and mobile application with the potential of reducing the cost of health care as the physician is able to monitor the patient's progress without the inconvenience and expense of hospitalization. The proposed design focuses on the development of a wireless health monitoring prototype system with the initial emphasis on measuring the electrical activity of the heart. One application of such a device would be in the monitoring of the elctrocardiogram (EKG) activity in sleep apnea patients. Two types of wireless heart monitors for indoor use and outdoor use will be considered. The prototype is composed of three main parts: microprocessor, sensor, and radio. The Microprocessor is the central control unit of the entire system. Sensors are used to measure the patient's health indicators and convert that information to electrical data. The Radio is used to transmit the data that has been processed by the control unit. One of the paramount considerations in the design is to make the device very compact and portable as well as to minimize power consumption. Tradeoffs between power and communication range need to be considered carefully. The MSP430 microprocessor from Texas Instruments is selected. It is built around a 16-bit CPU and designed for low cost, and specifically, low power embedded applications. Similarly, a low power radio transceiver will be selected and power management features will be included.

  PublisherDOI

• A reliable and efficient power harvesting system in CMOS for bio-implantable devices

  2009-12-01 · 1 citations

  articleOpen accessSenior author

  This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.

  PublisherDOI

• Enhancing user experience at museums using smart phones with RFID

  2009-05-01 · 16 citations

  articleSenior author

  With the advancement in cell phone technologies and its increased use as a multimedia platform, we can extend its application to enhance the experience of museum visitors. Smart phones can be used to provide full personalized multimedia presentations in a museum environment. This design proposal is aimed at increasing museum visitors and, boosting profits, and greatly reducing maintenance costs for museum operators. We propose a new technique to interface a museum's artifact specific multimedia files on the network to smart phones. Our design offers an RFID based interface that can be used for educational purposes in museums or conference settings. The design aims at the interaction between the user and specific artifacts by providing additional data sent wirelessly through the museum or conference database to a portable device such as the Motorola Q smart phone. The smart phone will contain the RFID reader and a tag that will store its MAC address. A central RFID reader will be used to provide Internet access to each user by scanning the MAC address on the smart phone tag and allowing wireless access for it. The RFID reader on the smart phone will read the tags embedded in the artifacts and corresponding data will be fetched from the network and transmitted to the device via WiFi or other wireless technologies, such as Bluetooth. We will first demonstrate the functionality of our design using an RFID reader interfaced with a laptop, which has wireless Internet connectivity. Different tags will be used as artifact identifiers and appropriate information from the Internet will be obtained and displayed on the laptop. This will include programming the reader to retrieve data matched to the artifact. The next step in the design would be to implement it using the MC9090, which is a handheld mobile device with an integrated RFID reader and WiFi. The program for the design implementation will be loaded on this device and the system functionality will be verified.

  PublisherDOI

• RFID for personal asset tracking

  2009-05-01 · 13 citations

  articleSenior author

  The proposed mobile device uses radio frequency identification (RFID) to keep track of registered objects that are within range of the user. The goal is to provide a new security solution for keeping belongings that are carried around. The device consists of a mobile RFID reader and a control program with a graphical user interface. The assets are attached with RFID tags with unique identifiers for each tag by using EPC Gen2. The graphic interface allows the user to create a catalog of objects that are to be kept track of Personal items such as keys, wallets, passports, jewelry, watches, glasses, medicine, portable flash drives, electronic devices (cell phone, PDAs, laptops, mp3 players, calculators) can be tracked using this system. The first phase of this project is to demonstrate how the assets will be tracked. Objects are tracked using a WJM3000 RFID reader. Motorola's MC9090 mobile computer will be used for the interface. In order for this device to be useful in practice, the assets need to be tracked in any direction from the reader with a range of at least 1.5 meters. The benefits of having such a device is that the user can be notified if the object is lost, the time the object was lost, and the identity of the object that was lost. The demonstration of such a device becomes much more useful when it is combined with a Global Positioning System (GPS) receiver. A GPS receiver can be used to keep record of where the RFID reader is when the assets are detected. This combination of the RFID reader and GPS receiver gives the user information on where the object was last detected. If the object was lost and not stolen, the object can be retrieved by going to where the RFID reader last detected the object.

  PublisherDOI

• A low-power low-data-rate neural recording system with adaptive spike detection

  2008-08-01 · 11 citations

  article

  A design of small, low-power, low-data rate, wireless 32-channel neural recording system for small animal head-stage is presented. A neural pre-amplifier has low-input-referred-noise of 1.95μV <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rms</inf> and consumes 53.6μW. To enable digital telemetry with optimized bandwidth under size and power constraint for small-animal headstage, we propose to separately record spikes and local-field potentials. An adaptive spike detector using absolute value algorithm accompanied with 7th-order all-pass delay filter provides accurate on-chip acquisition of spike waveform in duration of 2ms. A low-power 10-bit and 5-bit resolution A/D converters running at 22Ksamples/s for active spikes and 200samples/s for local field potential, respectively, can be integrated with the proposed system. Using adaptive bandwidth control, we achieve reduction of data-rate up to seven times which provides compatibility to 1Mbps Ultra Low Power Bluetooth technology. Total power consumption of single channel excluding ADCs is 109.58μW in 3.3V power supply.

  PublisherDOI

• Low-Power Low-Noise Neural Amplifier in 0.18&amp;#x003BC;m FD-SOI Technology

  2007-05-01 · 5 citations

  article

  For recording of neural signals from large population of neurons, stringent constraints are imposed on the design of neural amplifiers. We have designed neural amplifier in FD-SOI technology in order to achieve lower power consumption, smaller area, and better noise efficiency factor compared to the standard bulk processes. A symmetric pseudo resistor was realized with resistances on the order of 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">15</sup> Ω, enabling a low cut-off frequency of 0.6mHz. The designed neural amplifier occupies an area of 0.004mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , with simulated performance demonstrating an input-referred noise of 3.07μV <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rms</sub> and a power consumption of 6μW.

  PublisherDOI

Recent grants

• NUE: Introducing Nanoscale System Design into the Undergraduate Electrical and Computer Engineering Curriculum

  NSF · $106k · 2004–2007

Frequent coauthors

• H. Eisele

  University of Leeds

  21 shared

• G.I. Haddad

  10 shared

• J.R. East

  4 shared

• G.I. Haddad

  4 shared

• M.E. Sherwin

  Northrop Grumman (United States)

  4 shared

• Donghwi Kim

  4 shared

• G.O. Munns

  Medtronic (United States)

  4 shared

• Mira Naftaly

  National Physical Laboratory

  3 shared

Labs

• Electrical and Computer EngineeringPI

Education

• Ph.D., Electrical Engineering

  University of California, Los Angeles

  1996

• M.S., Electrical Engineering

  University of California, Los Angeles

  1992

• B.S., Electrical Engineering

  University of California, Los Angeles

  1990