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Microstrip patch antenna has small size, low cost, easy in construction and provides high performance over wide band of frequencies. Here, a new approach for designing a very small size bow shaped microstrip patch antenna has been proposed. The proposed bow shape microstrip patch antenna having Benzocyclobutene as a substrate has good resonant frequency (4.35 GHz). Also, the size is reduced more than...
Antenna size reduction is one of the major problems in wireless communication devices. For this process many design topologies have been proposed. Some of thern are capacitive loaded monopole antenna, (PIFA) planar inverted-F antenna, low profile multi element miniaturized monopole antenna (LMMMA) and Inductively Coupled Capacitively Loaded Momopole antenna (ICCLMA). The existing antenna techniques...
This paper presents a multiband planar inverted F antenna for mobile handset applications. The novel idea of meandering technique is introduced into the conventional rectangular patch antenna for higher GSM frequency. The proposed antenna features rectangular patch antenna for GSM (880–960MHz) band and meandering slot for DCS (1710–1880MHz) and GSM (1710–1880MHz) bands. The impedance bandwidth of...
This paper presents a multi-fractal antenna operating in ultra wide band range for WLAN and WiMAX applications. The novel idea of multi-fractal geometry is introduced into the conventional triangular patch antenna with microstrip feed. The addition of Koch and Sierpinski fractal techniques gives rise to better impedance bandwidth and return loss characteristics. The proposed antenna exhibits resonant...
In this paper a planar monopole antenna with DGS have been presented for enhancing the bandwidth along with an U-slot for obtaining band notch characteristics. A circular patch antenna of radius 6mm has been placed over FR4 substrate with 5mm ground plane on the back side. The antenna operates in UWB with VSWR<2 from 4.1GHZ to 11.65GHz. There is an U-shaped slot in the patch which is used to remove...
In this paper, a cosecant squared shaped beam pattern is synthesized from a uniformly spaced but nonuniformly excited linear antenna array where the uniform spacing of the array elements is considered as half of the desired signal wavelength. The shaped beam pattern is synthesized for the angular beam width of 32° by reducing the side lobe level (SLL) to −20.06 dB and almost without any ripple in...
In this work, the effectiveness of a relatively newly developed optimization algorithm, artificial bee colony (ABC) algorithm has been employed to synthesize uniformly excited, non-uniformly spaced, symmetrical linear arrays. ABC is used to reduce the side lobe level (SLL) of uniformly excited linear antenna arrays by taking the element spacing as the optimization parameters. The effectiveness of...
There is an increasing interest in military domain for wearable antennas. This paper presents the development and computation of wearable antenna which are structured into clothing. A compact Coplanar Waveguide fed (CPW) monopole antenna with dual band operation suitable for radar application is investigated. The antenna comprises the shape of a L-I-inverted L shape. By selecting the dimensions optimally...
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