Study of an Ultrawideband Omnidirectional Rolled Monopole Antenna With Trapezoidal Cuts

Dual Port Ultra Wideband Antennas for Cognitive Radio and Diversity Applications

“…The design of low profile, easy to construct antennas in a limited space with good radiation characteristics is a challenging task for antenna engineers. The planar antennas are very attractive mainly because of their interesting physical features such as simple structure, compactness and low manufacturing cost [5,6]. However, the requirements such as via-hole connection in probe-fed antennas, larger ground plane size in microstrip fed designs and precise alignment between layers in multilayer configurations result in increased system complexity.…”

Bandwidth Enhancement of Compact Monopole Antennas for Application in UWB Communication System

“…Because of the ultra-wideband property, UWB technology has many benefits, which are high data rate (> 100 Mb/s), low power consumption, compact, low cost, tremendous immunity to multipath interference and less hardware complexity. The UWB antennas anticipated in the open literature mainly focus on the slot and monopole antenna [2]- [5]. Wide slot antennas have an attractive property of providing a wide operating bandwidth.…”

Ultra-Wideband Omnidirectional Top-Loaded Rolled Planar Monopole Antenna with Truncated Conical Ground-Plane

“…A bi-arm rolled monopole resulting in a planar monopole antenna for UWB communication systems needs a trade-off between the system gain and omni-directivity, and it has an impedance bandwidth of 40% (Chen, 2005). A rolled monopole antenna (Wu & Kishk, 2008) provides about 132% of impedance bandwidth from 3.65 to 17.8 GHz and a stable, nearly omnidirectional gain over the ultra-wide bandwidth. Other antennas, such as the infinite biconical antenna and infinite monocone antenna, are omnidirectional and frequency independent, but these antennas are very large in size.…”