scholarly journals Switchable Electromagnetic Bandgap Surface Wave Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Qiang Bai ◽  
Kenneth L. Ford ◽  
Richard J. Langley
Keyword(s):  
Surface Wave ◽  
Radiation Pattern ◽  
Normal Mode ◽  
Patch Antenna ◽  
Wave Mode ◽  
Microstrip Patch Antenna ◽  
Electromagnetic Bandgap ◽  
Microstrip Patch ◽  
Wave Antenna

This paper presents a novel switchable electromagnetic bandgap surface wave antenna that can support both a surface wave and normal mode radiation for communications at 2.45 GHz. In the surface wave mode, the antenna has a monopole-like radiation pattern with a measured gain of 4.4 dBi at ±49° and a null on boresight. In the normal mode, the antenna operates like a back-fed microstrip patch antenna.

scholarly journals Performance Comparison of Swastika and Rectangular Shaped Microstrip Patch Antenna

2018 ◽  
Vol 1 (1) ◽  
pp. 11-14
Author(s):  
Suroj Burlakoti ◽  
Prakash Rai
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Performance Comparison ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch

In this paper, Microstrip patch antennas with rectangular and swastika shape of patch are designed and its performance parameters are compared with each other. Rectangular and Swastika shaped patch are considered in this paper with common rectangular ground plane. The antenna is simulated at 2.4 GHz using HFSS simulation software. This work mainly includes modification of antenna patch to improve the antenna parameters. The parameters of antenna such as Return loss, VSWR Bandwidth and radiation pattern are compared using simulation. The performance of Swastika shaped antenna was found to be better than rectangular shaped microstrip patch antenna with improved Return Loss, VSWR, Bandwidth and Radiation Pattern.

scholarly journals Effects of dielectric substrate material microstrip antenna for limited band applications

2021 ◽  
Vol 2070 (1) ◽  
pp. 012124
Author(s):  
Ravi Shankar Saxena ◽  
S Kavitha ◽  
Ashish Singh ◽  
Anurag Mishra
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Dielectric Substrate ◽  
Substrate Material ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Dielectric Constants ◽  
Dual Frequency ◽  
Microstrip Patch

Abstract In this paper, an analysis of dual frequency resonance antenna is achieved by OM-shape microstrip patch antenna. The proposed antenna is analyzed using IE3D simulation software. The analysis of proposed structure is done by varying the dielectric constants and height of the substrate as well as gain and radiation pattern of the antenna is obtained. It observed that on varying the dielectric substrate the effect on proposed antenna is very effective.

scholarly journals Dual Frequency Electronically Controlled Radiation Beam Reconfigurable slotted Antenna for Detection of a Stationary or Nonstationary Target

2020 ◽  
Vol 70 (5) ◽  
pp. 486-492
Author(s):  
Manoj Kumar Garg ◽  
Jasmine Saini
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Dual Frequency ◽  
Radiation Beam ◽  
Pin Diodes ◽  
Stationary Target ◽  
Scanning Rate ◽  
Microstrip Patch ◽  
Slotted Antenna

A dual-frequency and radiation pattern reconfigurable microstrip patch antenna for detecting a stationary as well as a non-stationary target is described. Six angular patches, that collectively form a circular shape, are used. All the six patches radiate one by one after a fixed interval of time and their feed controlling is done by six PIN diodes. The switching of PIN diodes is controlled by an embedded biasing network. This antenna provides radiation beam scanning characteristics. It gives the main lobe scanning at every 60o clockwise (or anticlockwise) continuously by applying a signal to patches one by one. The purpose of introducing the slot is to get the radiation pattern in the desired direction since by changing the length, width, and position of the slot, the direction of the radiation pattern can be controlled. The slotted antenna operates in a C band with two frequencies 4.21 GHz and 4.82 GHz and provides a radiation pattern, 90o apart from each other. The scanning rate of 0.6 deg/ms is obtained; however, the scanning rate can be changed with the help of ATMEGA 2560 microcontroller. This compact Microstrip patch antenna can be widely used for short-range applications i.e. ground surveillance radar, missile control, mobile battlefield surveillance for military and many other applications in a modern wireless communication system. The designed antenna along with the switching application will be able to track the stationary as well as a non-stationary target.

Microstrip Patch Antenna

2020 ◽  
pp. 178-193
Author(s):  
Kim Huat Yeap
Keyword(s):  
Wireless Communication ◽  
Transmission Line ◽  
Radiation Pattern ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Patch Antennas ◽  
Dual Frequency ◽  
Transmission Line Model ◽  
Communication Industry ◽  
Microstrip Patch

This chapter elaborates in detail on the microstrip patch antenna, which is widely utilized in the receivers of radio telescopes, as well as in the wireless communication industry today. Several models have been developed to analyze and design the patch antennas. The three most common ones are the transmission line model, the cavity model, and the Method of Moments model. Apart from this, the important parameters used in characterizing the patch antenna are also covered, which are its gain, efficiency, directivity, radiation pattern, return loss, bandwidth, and polarization. This is followed by the introduction of the radiation regions, which are basically classified as the Fresnel region and the Fraunhofer region. Finally, the dual-frequency microstrip patch antenna is introduced. Three popular approaches adopted for the design are orthogonal-mode polarization, multi-layer patching, and reactive loading.

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