Recent Trends in Antennas for Modern Wireless Communications
نویسنده
چکیده
The rapid development in wireless communications has demanded multiband or wideband antennas to support wireless communication devices such as smart phones, tablets, laptop computers, radar system, satellite communication, airplane, and unmanned airborne vehicle (UAV) radar. It has also demanded compact wireless devices that allow more space to integrate other electronic components. The aim of this chapter is to provide an idea of current R&D trends and novel approaches in design, analysis and synthesis of broadband, multiband and reconfigurable antennas for the new generation of mobile communication devices, as well as for UWB communications, radars and so on.
منابع مشابه
Antenna Miniaturization Using Fractals (RESEARCH NOTE)
Antenna Miniaturization Using Fractals Richa Garg, AP ECE Deptt., [email protected], J.C.D.C.O.E., Sirsa ABSTRACTThe use of fractal geometry in designing antenna has been a resent topic of interest. Fractal shape has their own unique characteristics that the improved antenna performance can be achieved without degrading the antenna properties. Modern telecommunication system requires antenn...
متن کاملEvaluation of a BIBD Based Directional MAC Protocol for Wireless Ad Hoc Networks
The use of directional antennas in wireless ad hoc networks can significantly improve global performance due to a high spatial channel reuse. Nevertheless, its introduction poses new location dependent problems related to the MAC protocol. In this paper, the Balanced Incomplete Block Design theory has been exploited to develop a new MAC protocol for wireless ad hoc networks using directional ant...
متن کاملFractal-Shaped Reconfigurable Antennas
With the tremendous advancements in wireless communications, there is an increasing demand for miniature, low-cost, easy-to-fabricate, multiband and wideband antennas for use in commercial communications systems. As a part of an effort to further enhance modern communications systems technology, researchers have been studying different approaches for creating novel and innovative antennas. The ...
متن کاملA Survey on Performance Enhancement of MIMO- CDMA Systems
CDMA (Code Division Multiple Access) plays an important role in modern wireless communications. MIMO refers to links with multiple antennas at the transmitter and receiver side. CDMA systems combined with multiple antennas is a promising technique, beyond 3G and 4G wireless communications. MIMO provides spatial diversity, which mitigates the fading. The usage of multiple antennas can significan...
متن کاملSmart antennas for wireless communications pdf
In a majority of currently deployed wireless communication systems, the objective is to sell a product.We describe standard cellular antennas, smart antennas using fixed beams, and adaptive. Wireless communication systems are limited in performance. SIGNALS AND SYSTEMS.The adoption of smart adaptive antenna techniques in future wireless systems is. The main impediments to high-performance wirel...
متن کامل