Summary
International Symposium on Antennas and Propagation
2010
Session Number:2WB1
Session:
Number:2WB1-5
Bidirectional Antenna on Flambeau-Shape
Watcharaphon Naktong, Boonchai Kaewchan, Apirada Namsang, Amnoiy Ruengwaree,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Presently, GPR system has brought to apply widely in several types of work. Mostly, it is used to investigate with no damage cause such as objects exploring, underground gas pipes, underground tank, tree root, electric cable and waste water pipe which those objects may be destroyed if there is the digging operation in that area surface without prior investigation. The antenna used in GPR system according to FCC standard has set the antenna into 2 lengths which are the low antenna lower than 960 MHz and the high length will set at antenna 3.1 - 10.6 GHz [1-2]. Besides as stated, UWB (Ultra-wideband) was also brought to apply in wireless communication by technology standard IEEE 802.15.3a [3], which is the new technology of communication that becomes very popular because of its wide bandwidth [4], so that the transmitting of large amount of information is enhanced with high speed. For GPR system and wireless communication according to IEEE 802.15.3a standard, the important equipment that makes both systems work effectively is the antenna that response to the 3.1 - 10.6 GHz frequency range and another part that help to support an antenna for good transmitting. The input signal that feeds to CPW-fed can be done in several ways. But one way that popular applied is Coplanar Waveguide (CPW) technique that is found low loss in the form of wave distribution and no via-hole for linking to ground in order to a ground antenna is on the same side[5]. Another good point of CPW-fed is the matching impedance can be done easily so, there was the research and application of CPW-fed technique with a monopole antenna to reduce the size of antenna [6-8]. This research presents the new form of a monopole antenna with CPW feed-line as the idea in [9-12] to apply the new structure of a Flambeau-shape antenna. The CST program is used for optimized the proposed parameters to have the most effectiveness.