scholarly journals A New Diminutive Octa Polarization Reconfigurable Circular Patch Antenna

2020 ◽  
Vol 9 (6) ◽  
pp. 775-779
Keyword(s):  
Circular Polarization ◽  
Patch Antenna ◽  
Prototype Model ◽  
Rf Switch ◽  
Left Hand ◽  
Circular Patch ◽  
Compact Size ◽  
Circular Patch Antenna ◽  
Polarization States ◽  
The Right

This proposes a new diminutive octa polarization reconfigurable circular patch antenna design. This new antenna can operate in eight different polarizing states (6 different angles of linear polarization and 2 circular polarization states) with the help of a reconfigurable probe feed network. The antenna comprises of a circular layer of radiation with four equally spaced slits at the boundary of the circular patch to obtain size reduction. The bias voltages of six pairs of PIN diodes are interval between each state. A 3 dB hybrid coupler and a RF switch are used to produce reconfiguration between circular polarization states of the right and left hand. The proposed antenna was designed using CST microwave studio, fabricated as a prototype model and tested which produces desired values for various parameters of antenna including compact size. The designed antenna operates within 2.4-2.5 GHz frequencies suitable for wireless applications

POLARIZATION RECONFIGURABLE ANTENNA THROUGH SWITCHABLE CPW FEEDING STRUCTURE

2015 ◽  
Vol 77 (10) ◽  
Author(s):  
Mohamed Nasrun Osman ◽  
Mohamad Kamal A. Rahim ◽  
Mohd Fairus Mohd Yusoff ◽  
Mohamad Rijal Hamid ◽  
Huda A. Majid ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Patch Antenna ◽  
Planar Waveguide ◽  
Phase Delay ◽  
Reconfigurable Antenna ◽  
Left Hand ◽  
Circular Patch ◽  
Quarter Wavelength ◽  
Circular Patch Antenna ◽  
Feeding Structure

This paper presents the polarization reconfigurable circular patch antenna. The reconfigurability feature is realized through the alteration of the feeding network. The antenna consists of a circular patch as a radiator, and orthogonally fed by a co-planar waveguide (CPW) slotline which terminated with tapered transformer. The CPW slotline are interconnected with quarter wavelength phase delay slotline. Eight switches are placed at the CPW transmission slotline, to either activate or deactivate the phase delay slotline. Consequently, depending on the switch configurations, the polarization can be altered to the desired sense, either linear, right-hand circular or left-hand circular polarization.

Stacked circular patch antenna with dual right/left hand circular polarization for wideband applications in X band

2009 ◽  
Vol 51 (6) ◽  
pp. 1419-1424 ◽  
Author(s):  
J. L. Masa-Campos ◽  
E. Casla Sanz ◽  
M. Sierra-Pérez ◽  
J. M. Fernandez
Keyword(s):  
Circular Polarization ◽  
Patch Antenna ◽  
Left Hand ◽  
Circular Patch ◽  
X Band ◽  
Circular Patch Antenna

scholarly journals Dual- Band Antenna for Wi-Fi and 5G Applications

2019 ◽  
Vol 9 (1S5) ◽  
pp. 130-131
Keyword(s):  
Circular Polarization ◽  
Linear Polarization ◽  
Patch Antenna ◽  
Return Loss ◽  
Axial Ratio ◽  
Band Width ◽  
Dual Band ◽  
Circular Patch ◽  
Dual Band Antenna ◽  
Circular Patch Antenna

In this communication, a circular patch antenna is reported for dual- band operation based on VIAs. Initially the patch is resonating at single band with Linear Polarization (LP), and the Circular Polarization (CP) is obtained by inserting semi circular cuts at the edges of circular patch. The second band is achieved by loading the vertical metallic VIAs along the circumference of the patch antenna. The reported antenna is working at 2.4 GHz (Wi-Fi) and 3.5 GHz (5G) bands with Return Loss Band Width (RLBW) of 4.83% and 10.37% respectively. The Axial Ratio (AR) bandwidth at 5G band is 2.38% (3.31- 3.39 GHz)

scholarly journals Circular Polarization of the Square, Circular, Triangle, and Hexagonal Microstrip Antenna

2020 ◽  
Vol 3 (1) ◽  
pp. 5
Author(s):  
Nurhayati Nurhayati ◽  
Paulen Aulia Lutfia ◽  
Raimundo Eider Figueredo Sobrinho ◽  
Alexandre Manicoba De Oliveira ◽  
João Francisco Justo Filho ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Circular Polarization ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Axial Ratio ◽  
Patch Shape ◽  
Circular Patch ◽  
Hexagonal Shape ◽  
Circular Patch Antenna

Microstrip antenna with circular polarization can be applied for many applications. Some microstrip antenna with square, circular, triangular, and hexagonal shape has been designed to get return loss, axial ratio, and radiation performance. We compare twelve microstrip antenna by maintaining its substrate dimension, feeding shape, and outer patch dimension. Even though antenna has a circular patch, it doesn’t always produce circular polarization. From the simulation, we found that with add some structure, the antenna can reach multiband resonance from 1 to 6 GHz. The Circular patch antenna reached seven numbers of the multiband resonance frequency. The hexagonal patch antenna reaches the highest directivity as 9.53 dBi. The circular polarization is achieved for a square and Hexagonal patch shape with axial ratio value is 1.96 dB at 4 GHz and  1.26 dB at 4.1 GHz sequentially at phi 900 and theta 900. 

scholarly journals Frequency Reconfigurable Circular Patch Antenna with an Arc-Shaped Slot Ground Controlled by PIN Diodes

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Yao Chen ◽  
Longfang Ye ◽  
Jianliang Zhuo ◽  
Yanhui Liu ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Communication Systems ◽  
Rotational Symmetry ◽  
Effective Length ◽  
Pin Diodes ◽  
Rectangular Slot ◽  
Circular Patch ◽  
Compact Size ◽  
Circular Patch Antenna ◽  
The Common

In this paper, a compact frequency reconfigurable circular patch antenna with an arc-shaped slot loaded in the ground layer is proposed for multiband wireless communication applications. By controlling the ON/OFF states of the five PIN diodes mounted on the arc-shaped slot, the effective length of the arc-shaped slot and the effective length of antennas current are changed, and accordingly six-frequency band reconfiguration can be achieved. The simulated and measured results show that the antenna can operate from 1.82 GHz to 2.46 GHz, which is located in DCS1800 (1.71–1.88 GHz), UMTS (2.11–2.20 GHz), WiBro (2.3–2.4 GHz), and Bluetooth (2.4–2.48 GHz) frequency bands and so forth. Compared to the common rectangular slot circular patch antenna, the proposed arc-shaped slot circular patch antenna not only has a better rotational symmetry with the circular patch and substrate but also has more compact size. For the given operating frequency at 1.82 GHz, over 55% area reduction is achieved in this design with respect to the common design with rectangular slot. Since the promising frequency reconfiguration, this antenna may have potential applications in modern multiband and multifunctional mobile communication systems.

scholarly journals Novel and Compact Circular Ring Microstrip Antenna with Parasitic Chip for 5G Applications

2021 ◽  
Vol 2128 (1) ◽  
pp. 012007
Author(s):  
Sherif El Dyasti ◽  
Maged Medhat Mostafa ◽  
Prof. Hussien Ghoz ◽  
Mohamed Fathy Abo Sree
Keyword(s):  
Patch Antenna ◽  
High Gain ◽  
Circular Ring ◽  
Geometrical Parameters ◽  
Total Efficiency ◽  
Frequency Range ◽  
Circular Patch ◽  
Operating Frequency Range ◽  
Compact Size ◽  
Circular Patch Antenna

Abstract In this work, a circular patch antenna is designed and a parametric study in terms of different geometrical parameters is conducted. As a second step, a parasitic chip is introduced on top of the proposed circular patch antenna in the aim to enhance the gain and antenna efficiency. The proposed antenna operates at 25.61 GHz (With a frequency range between24.383 GHz and 27.7 GHz), suitable for 5G applications. The antenna modelling with and without parasitic chip, along with the performance analysis is conducted with CST Studio Electromagnetic (EM) simulator software. A compact size of 10×10×1.547 mm3, easy to fabricate, broadband characteristics up to 3.31 GHz with a high gain up to 6.87 dB, total efficiency of 95 % and a minimum return loss low than -68.02 dB covering the operating frequency range. Lastly, to investigate and validate the antenna overall performance, both frequency and time domain-based simulation is performed, and a good agreement is obtained.

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