Modified Koch curve broadband fractal antenna for spectrum sensing in cognitive radio

2020 ◽  
pp. 1-7
Author(s):  
Monika Aggarwal ◽  
Amar Partap Singh Pharwaha
Keyword(s):  
Cognitive Radio ◽  
Radiation Pattern ◽  
Spectrum Sensing ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Fractal Antenna ◽  
Design And Development ◽  
Koch Curve ◽  
Efficient Operation ◽  
Microstrip Patch

Abstract This paper presents the design and development of broadband modified Koch curve microstrip patch antenna with multiband characteristics for spectrum sensing in cognitive radio applications. The proposed spectrum sensing antenna is designed specifically for its efficient operation in the spectrum (1.683–3.05, 4.246–9.714, and 11.25–18 GHz) specified for L, S, C, X, Ku with broadband characteristics and omnidirectional radiation pattern. The validity of the proposed shape is proved by having a comparison with other fractal shapes available in the literature.

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.

Design and Development of Compact Microstrip Patch Antenna for Wireless Applications

2017 ◽  
Vol 6 (3) ◽  
pp. 1
Author(s):  
R. Nagendra ◽  
T. Venkateswarulu
Keyword(s):  
Patch Antenna ◽  
Impedance Matching ◽  
Characteristic Impedance ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Design And Development ◽  
Wireless Applications ◽  
Composite Patch ◽  
Microstrip Patch ◽  
Operating Band

In this paper, a novel dual band microstrip patch antenna based on composite patch antenna and radiating part. By selecting a suitable offset feed position, it is feasible to provide 50Ω characteristic impedance and thus making better impedance matching. The proposed antenna has been improved broader bandwidth by using RT Duroid substrate. The radiating part is plays a important role in creating a lower operating band (2.45 GHz) in addition to achieve miniaturization. The proposed antenna has to be fabricated with RT / Duroid substrate and dimensions of 19 × 22 × 0.8 mm. The measured -10 dB bandwidth of 200 MHz at 2.45 GHz and 990 MHz at 5.45 GHz, which is quite useful for Industrial, Scientific and Medical (ISM) and WLAN applications. 

scholarly journals Design and Development of Circular Polarized Conformal Microstrip patch Antenna

2019 ◽  
Vol 9 (2S3) ◽  
pp. 106-109
Keyword(s):  
Parametric Study ◽  
Patch Antenna ◽  
Beam Width ◽  
Conformal Structure ◽  
Microstrip Patch Antenna ◽  
Design And Development ◽  
Conformal Antenna ◽  
Microstrip Patch ◽  
Half Power ◽  
Microstrip Feed

This paper presents broadband circular polarized conformal antenna with a square patch for on-board applications. The substrate is located in between patch and the ground. A novel Circular polarized square patch with microstrip feed with two truncated corners with conformal structure is designed. Using a parametric study on the effect of the position of feed, the antenna parameters VSWR bandwidth, half power beam width and polarization of antenna are analysed. Finally fabrication of conformal square patch on 2.2 dialectic substrate and measured results are discussed.

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.

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