Low dielectric constant is used in the prototype design because it gives better efficiency and higher bandwidth (Balanis, 2005; Ramesh, Prakash, Inder, & Apisak, 2001; Wong, 2002) and it increases the fringing field at the patch periphery and thus increases the radiated power.The small loss tangent was neglected in the simulation.Patch antennas with properly designed slits or slots are useful in this perspective.
Low dielectric constant is used in the prototype design because it gives better efficiency and higher bandwidth (Balanis, 2005; Ramesh, Prakash, Inder, & Apisak, 2001; Wong, 2002) and it increases the fringing field at the patch periphery and thus increases the radiated power.The small loss tangent was neglected in the simulation.Patch antennas with properly designed slits or slots are useful in this perspective.Tags: Best American Essays 2001Business Plan DeckA Essay About My Best FriendPersuasive Essay About Christopher ColumbusPersonal Problem SolvingBusiness Plan Builder Software
2.58 GHz for non-direct line of sight, wireless Internet service providers, and compatible with Navini Networks; 3.17 and 3.42 GHz for Wi MAX; 4 GHz for C-band application such as weather radar systems; and 5.3 GHz for higher WLAN.
Very small frequency ratios of the values 1.2286, 1.078, 1.169, and 1.325 are achieved between two consecutive resonant frequencies.
To design coaxial probe feed rectangular patch antennas, there are some essential parameters to be considered.
Firstly, the resonant frequency () and loss tangent equal to 0.002.
1 and corresponding dimensions are length of the patch (Feed position plays a major role in the design.
Probe feed is used to provide the feed to the antenna.Some wireless applications of antennas are desired to operate simultaneously for Wireless LAN, Worldwide Interoperability for Microwave Access (Wi MAX) and some next generation wireless technologies.The basic geometry and configuration of the U-slot antenna was introduced in 1995 by Huynh and Lee as a single-layer, single-patch wideband linearly polarized microstrip patch antenna.The proposed antenna provides triple bands at 1.6The rapid expansion and revolution of wireless technology has drawn new demands for integrated components including antennas.Antenna is one of the main components of the integrated low-profile wireless communication systems; therefore, antennas miniaturization is necessary to achieve the optimal design.Many techniques have been proposed to design microstrip patch antennas with multiband characteristics.In the proposed antenna design, a combination of dual U-slot and multiple layers is used to get multiple bands and wide bandwidth.Many researchers reported design of microstrip patch antennas based on either incorporating slots or introducing multiple layers.Design of the proposed antenna is a combination of double U-slot and multilayer structure with air gap as one of the layer.Multiband antennas (Lee, Luk, Mak, & Yang, 2011) can cover multiple wireless technologies; however, in microstrip patch antennas, the U-slot was mainly used for bandwidth enhancement rather than introducing a band notch and it has been shown that the U-slot technique can be used to design patch antennas with dual and multi-band characteristics.The studies reported (Lee, Steven Yang, Kishk, & Luk, 2010; Singh, Ali, Singh, & Ayub, 2013) on U-slot patch antenna showed that, it can be intended not only for wideband applications, but also for multiband (dual and triple-band) applications.