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A novel frequency reconfigurable microstrip patch antenna with circular slot is presented in this paper. In the predictable design, there is a two diode are introduced with circular slot on the patch to produces four reconfigurable different frequency bands at 19.49 GHz, 19.56 GHz, 19.62 GHz and 20.27 GHz, respectively. The antenna is designed on FR-4 substrate with permittivity and thickness 4.1,...
A novel design technique of parabolic shape ground plane directional ultra-wideband (UWB) with circular patch antenna for airborne radar system is being presented here. The feed for the proposed directional ultra-wideband antenna is given by microstrip line and T-slots are inserted diagonally at the corners of parabolic ground plane in order to increase the directivity. The simulation analysis of...
In this paper, a novel design of square patch antenna with a switchable polarization sense. The propose structure is reconfigurable patch antenna with polarization states being switched among linear polarization (LP), left-hand circular polarization (LHCP) and right-hand circular polarizations (RHCP). This antenna structure has four L-shaped slots on the ground plane, and the Circular Polarization...
In this paper, a novel design of an Octagonal shape micro strip patch antenna with switchable slots (PASS)structure is proposed to achieve polarization diversity. Two orthogonal slots are incorporated into the patch and two p-i-ndiodes are utilized to switch the slots on and off. By turning the diodes on or off, this antenna can radiate with linear and circular polarization, either right hand circular...
Micro strip patch antennas are strong candidates for use in many wireless communications applications. In this paper, the design, optimization and simulation of a dual-band modified U-slot micro strip patch antenna for WiMAX/WLAN application is presented. It operates on 2.45-2.57 GHz and 5.1-5.4 GHz bands. Radiating patch lies on the Rogers RT/duroid 5880 substrate which is having low dielectric constant...
This paper presents a novel square microstrip patch on the hybrid substrate that includes a square an unbiased ferrite ring in the Rogers TMM4 substrate, initially at a distance of the one-quarter of the free space wavelength from the edges of patch. Using CST Microwave studio, the results of the patch antenna above a conventional substrate (i.e., Rogers TMM4 substrate without any ferrite ring) and...
To overcome the challenges of multi-frequency applications a dual band microstrip patch antenna mounted over a FR4 substrate is proposed in this paper. The proposed antenna design is simulated on electromagnetic (EM) simulation software using FR-4 substrate with dielectric constant of 4.54 and thickness of 1.6 mm. The antenna has a compact structure with total size of 58×65 mm2. The proposed antenna...
The micro strip patch antenna is the most preferred for low cost and compact design. The proposed antenna design is simulated using FR-4 substrate with dielectric constant of 4.54 and thickness of 1.60mm on electromagnetic (EM) simulation software. The antenna designed has a compact structure with a total size of 60x60mm square. The bandwidth of micro strip patch antenna is enhanced by replacing a...
A frequency reconfigurable octagonal shaped patch antenna is designed and its properties are studied. In this paper, a micro strip patch antenna. In this antenna design patch of the antenna is separated into three parts by cutting the open ended L-slot on the both side of the patch. Here four PIN diodes are used for the operation. When the diode D1 and D3 is on than the antenna works on the frequency...
Periodic structures can help in improving the micro strip patch antenna performance by using their unique properties. The designed antenna has a compact structure with a total size of 60x60mm2. This antenna design is simulated using FR-4 substrate with dielectric constant of 4.1 and thickness of 1.50mm on electromagnetic (EM) simulation software. By placing the square shaped unit cells in circular...
In this paper, a novel frequency reconfigurable antenna design and development is proposed for wireless devices. In the proposed design, a rectangular patch antenna with square slot using two PIN diodes at the centre frequency 10 GHz was designed and simulated frequency reconfiguration is achieved in the frequency range of 10-10.5 GHz and the measured results shows the same effect in the frequency...
Recent developments in the wireless communication industry continue to drive the requirements for small, compatible, and affordable reconfigurable antennas. To overcome the challenges of multi-frequency operation a new scheme of frequency reconfiguration is proposed. In the proposed design a rectangular patch antenna with slots at the centre frequency 10 GHz that can be reconfigured in the frequency...
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