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WIRELESS COMMUNICATION SYSTEMS

It has already been over more than a hundred years since Maxwell's predictions of the electromagnetic wave presence and experiments by Hertz. Needless to say, contemporary information and communication technology (ICT), especially microwave wireless communication technology, has a direct and indirect impact on our lives at present. In other words, this technology area consists of many fields, element and system technologies and finding increased applications along with other technological advancements in electronics.

Our Wireless Technology experts are focussing on novel areas of antenna designing and Microwave communication which may change many existing technological concepts in near future. We are now concentrating on the following areas:

MAIN RESEARCH AREAS

RFID Technology

Radio Frequency Identification (RFID) is a technology that uses radio waves to passively identify a tagged object. It is used in several commercial and industrial applications, from tracking items along a supply chain to keeping track of items checked out of a library. The system has two basic parts: tags and readers. The reader gives off radio waves and gets signals back from the RFID tag, while the tag uses radio waves to communicate its identity and other information.

We are concentrating on the research to enhance the performance of RF ID. We are also supplying RF ID tags and readers for various commercial applications as per the customer requirement.

RF Energy Harvesting

Radio Frequency Energy Harvesting (RFEH) is an energy conversion technique employed for converting energy from the Electromagnetic (EM) waves into the electrical domain (i.e., into voltages and currents). RF Energy Harvesting holds vast potential for replacing batteries or increasing their lifespans. Currently, batteries power a majority of low-power remote sensor devices and embedded equipment. In fact, batteries have finite lifespans and require periodic replacements. By applying power harvesting technologies, devices and equipment can become self-sustaining with respect to the energy required for operation, thereby obtaining an unlimited operating lifespan. Thus, the demand for power maintenance will become negligible.

Electromagnetic energy is abundant in space and can be retrieved without limit. Electromagnetic waves come from a variety of sources such as satellite stations, wireless internet, radio stations, and digital multimedia broadcasting. A radio frequency power harvesting system can capture and convert electromagnetic energy into a usable direct current (DC) voltage. The key units of an RF power harvesting system are the antenna and rectifier circuit that allows the RF power or alternating current (AC) to be converted into DC energy. We are much focussing on the efficient realization of RF Energy Harvesting Systems and thereafter its commercialization.

Wearable Antennas

Wearable antennas have gained much attention in recent years due to their attractive features and possibilities in enabling lightweight, flexible, low cost, and portable wireless communication and sensing. Such antennas need to be conformal when used on different parts of the human body, thus need to be implemented using flexible materials and designed in a low profile structure. Ultimately, these antennas need to be capable of operating with minimum degradation in proximity to the human body. Such requirements render the design of wearable antennas challenging, especially when considering aspects such as their size compactness, effects of structural deformation and coupling to the body, and fabrication complexity and accuracy.

We are taking up those challenges and investigating much on the design and development of wearable Antennas.

Millimeter Wave Antennas

With the explosion of video content, people want to remain glued to their screens. However, low internet speeds often play the spoilsport. As a result, users demand faster data transmission and more reliable network services from the telecom carriers. This demand has laid the foundation for 5G, the next generation of communications technology. Although 5G is still in its preliminary stage, the entire industry is working together to determine its final form.

Millimeter waves, also known as extremely high frequency (EHF), is a band of radio frequencies that is well suited for 5G networks. Compared to the frequencies below 5 GHz previously used by mobile devices, millimeter wave technology allows transmission on frequencies between 30 GHz and 300 GHz. So far, only radar systems and satellites use millimeter waves. But, the use of millimeter wave frequencies to connect mobile users to nearby base stations is an entirely new approach. Our expert research team is focussing much on the development of Millimeter Wave Antennas.