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Carbon Nanotube based Variable Frequency Patch-Antenna

Researchers at UCI have developed a patch antenna constructed from carbon nanotubes, whose transmission frequency can be tuned entirely electronically. Additionally, the antenna can be made operable in the microwave to visible frequency regime by simply varying the device dimensions and composition.

Embedded Power Amplifier

Researchers at the University of California, Davis have developed an amplifier technology that boosts power output in order to improve data transmission speeds for high-frequency communications.

Absorptive Microwave Bandpass Filters

Researchers at the University of California, Davis have developed absorptive bandpass filters that enable improved passband flatness and good impedance matching both in-band and out-of-band.

Guided-Wave Powered Wireless Sensors

UCLA researchers in the Department of Electrical and Computer Engineering have developed a wirelessly powered, flexible sensor that detects pipe leaks over long distances.

A Battery-Less Wirelessly Powered Frequency-Swept Spectroscopy Sensor

UCLA researchers in the Department of Electrical and Computer Engineering have developed a wirelessly powered frequency-swept spectroscopy sensor.

ScatterMIMO: Enabling Virtual MIMO with Smart Surfaces. ScatterMIMO is a programmable smart surface that contains phase shifters to change the wireless channel

In the last decade, the bandwidth expansion and MIMO spatial multiplexing have promised to increase data throughput by orders of magnitude. However, we are yet to enjoy such improvement in real-world environments, as they lack rich scattering and preclude effective MIMO spatial multiplexing.

BLoc: CSI-Based Accurate Localization for BLE Tags

Bluetooth Low Energy (BLE) tags have become very prevalent over the last decade for tracking applications in homes as well as businesses. These tags are used to track objects, navigate people, and deliver contextual advertisements. However, in spite of the wide interest in tracking BLE tags, the primary methods of tracking them are based on signal strength (RSSI) measurements. Past work has shown that such methods are inaccurate, and prone to multipath and dynamic environments. As a result, localization using Wi-Fi has moved to Channel State Information (CSI, includes both signal strength and signal phase) based localization methods. In indoor environments, BLE tags are the methods of choice. They provide sufficiently long range indoors, are resistant to frequency selective fading and have low power operation. BLE tags are readable by off-the-shelf smartphones and access points, because of their co-existence in the 2.4 GHz Wi-Fi band. BLE tags are, therefore, getting very popular for tracking operations in homes, factory floors, etc. Google’s vision for physical web is based on extensive deployment of BLE beacons. It is in this context that localization for BLE devices becomes crucial. Deep Neural Networks and Convolutional Neural Network techniques to overcome these limitations.

Low Complexity Maximum-Likelihood Decoding of Cyclic Codes

UCLA researchers in the Department of Electrical and Computer Engineering have developed a low complexity decoding algorithm of cyclic codes with better performance and lower latency than current approaches.

Antenna-Co-Designed UWB Impulse Transmitter for Size-Constraint Applications

Researchers in the UCLA Department of Electrical and Computer Engineering have developed an antenna co-design for FCC-regulation-compliant IR-UWB transmitters that can be applied to wearable devices and implantable medical technology.

THz Impulse and Frequency Comb Generation Using Reverse Recovery of PIN Diode

UCLA researchers in the Department of Electrical and Computer Engineering have developed an antenna design procedure that can realize devices with beam scanning at a fixed frequency on a single element antenna.

An Antenna Design Method to Realize Endfire Radiation with Vertical Polarization

Researchers from the UCLA Department of Electrical and Computer Engineering have developed a method to realize endfire radiation with vertical polarization on low-profile and compact resonant antennas, allowing for high selective frequency responses and low energy cost.

A Design Procedure for Single-Element Fixed-Frequency Beam Steering Antenna

UCLA researchers in the Department of Electrical and Computer Engineering have developed an antenna design procedure that can realize large range continuous beam scanning at a fixed frequency on a single element antenna.

Nonreciprocal Reflectarray Antennas based on time-modulation

Researchers at the University of California, Davis have developed nonreciprocal and reconfigurable reflectarray antennas based on time-modulation with demonstrated advantages over the state of the art.

Nonreciprocal And Reconfigurable Phased-Array Antennas

Researchers at the University of California, Davis have developed nonreciprocal and reconfigurable phased-array antennas with demonstrated advantages over competing, current technologies.

Electronic Device and Method for Scheduling for Enhanced Transmission Efficiency Over a Wireless Communication Network

Existing cellular networks assume that interference from neighboring cells is treated as noise and mobile devices are selected (scheduled) to communicate based on performance metrics for each device. When sliding-window coded modulation (SWCM) is used however, the performance metrics depend on those of interfering devices in neighboring cells, and hence scheduling has to be performed simultaneously over multiple cells.

Apparatus and Method For Transmitting Signal Using Sliding-Window Coded Modulation In A Wireless Network

To meet the demand for wireless data traffic having increased since deployment of 4G communication systems, efforts have been made to develop an improved 5G or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a 'Beyond 4G Network' or a 'Post LTE System'.   The 5G communication system is considered to be implemented in higher frequency (mm Wave) bands, e.g., 60GHz bands, so as to accomplish higher data rates. To decrease propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), Full Dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, large scale antenna techniques are discussed in 5G communication systems.   In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud Radio Access Networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), reception-end interference cancellation and the like.   In the 5G system, Hybrid FSK and QAM Modulation (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier(FBMC), non-orthogonal multiple access(NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed.   The sliding-window superposition coding (SWSC) is a coding method capable of reaching a theoretical critical value performance of a physical layer in an additive white Gaussian noise (A WGN) interference environment where a fading is not generated, and thus the SWSC has a high efficiency

Transmitter Localization Without Clock Synchronization

Determining the location of a transmitting party in a communication network normally requires a number of identifying factors. The transmitting party can be located through triangulating their signal, using the signal’s arrival at several receivers to determine the transmission’s origin. One can also determine the location of a receiver by comparing the receipt of multiple transmitter signals; however, in both scenarios the transmitter and receiver must employ clock synchronization and signal time-of-travel information to accurately compute relative localization between the two.   The Global Positioning System is a well-known example of this process, leveraging known time (and synchronizing to that time) and position of each GPS satellite to deduce the location of a receiver.  

Advanced Power Management IC’s for Li-Ion Powered Mobile & IoT Devices

Most modern mobile, wearable, and Internet of Things (IoT) devices utilize Li-ion batteries as power supplies. Since the 2.8-4.2V Li-ion output voltage range is not compatible with the 0.6-1.0V voltage requirements of most system-on-chips (SoCs) implemented in scaled CMOS, a DC-DC converter, typically implemented as a discrete power management integrated circuit (PMIC), is placed between the battery and the load.

Cloud- enabled Wireless pH Monitoring in Laboratory Sample Vials

A team of inventors at UCI have developed a miniaturized, wireless pH sensing system capable of monitoring the pH of laboratory samples in real-time with cloud-enabled connections for data collection. The sensor is designed to fit into the caps of standard sample vials, providing continuous measurements and eliminating the need to open vials during sensing.

Digital Spur Cancellation Of Fractional Frequency Synthesizer

UCLA researchers in the Department of Electrical and Computer Engineering have developed a digital spur cancellation technique for frequency synthesizers used in clock synchronization.

Method Of Creating Scalable Broadband And Tunable Light Emitter At The Nanoscale Using Layered Black Phosphorus

UCLA researchers in the Department of Electrical and Computer Engineering have developed a novel method to create a room temperature stable broadband tunable light emitter at the nanoscale.

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