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Present paper details the design, simulation, and optimization of a waveguide fed linearly polarized omni-directional antenna at millimeter wave frequency. The proposed antenna is λ/4 monopole antenna which is fed by standard rectangular waveguide WR-28. The antenna consists of a radiating metallic pin, circular ground plane, rectangular waveguide and Teflon radome. Finite element method based ANSYS's...
A compact two-port diversity antenna is proposed and experimentally investigated. One of the ports is connected to a microstrip feed, whereas the other port to a coplanar waveguide feed. The radiating elements are semi-circular disc-shaped monopoles rotated around their centres. By shaping the common ground plane, ultra-wide impedance bandwidth is achieved. The measured bandwidths are 2–12 GHz at...
A CPW excited rectangular slot antenna for circular polarization is presented. The feed line is terminated on a circular disc having a slant rectangular slit. Inverted L-shape strips are attached to the ground plane and protrude into the rectangular slot. The measured impedance bandwidth achieved by the antenna is 124 % from 2.4 GHz to 10.2 GHz The measured bandwidth of circular polarization with...
A compact (25.4mm × 25.4mm) coplanar waveguide fed dual band antenna for GSM/Wi-Fi/ WLAN applications is presented in this paper. The proposed antenna has a simple structure which consists of two asymmetric stepped strips, which is printed on a commercially cheap FR4 substrate. It exhibits dualband operations in the range of 1.2–1.9GHz and 3.5–6GHz with satisfactory radiation properties. The threshold...
This paper presents the design of an inscribed square circular fractal antenna with notch having adjustable frequency characteristics. The position and width of the notch band can be adjusted in the entire operating band. A prototype of the antenna has been designed on FR4 substrate dielectric constant 4.3 and thickness h = 1.53 mm with a U-shape slot in coplanar waveguide feed of length L = 11 mm...
This paper presents CPW -fed Square Shaped fractal antenna. The Antenna has been designed on FR4 substrate ??r = 4.3 and thickness 1.53 mm. The antenna has been fabricated and tested using VNA. The experimental result exibihits dual bands i.e. from frequency 0.79 GHz - 2.24 GHz and from frequency 3.53 GHz to 12.29 GHz. This corresponds to 1.45 GHz and 8.76 GHz respectively. The lower end frequency...
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