scholarly journals Wideband Design of Circular Microstrip Patch Antenna using Rectangular Metal Sheet Superstrate for X-Band Applications

2020 ◽  
Vol 9 (7) ◽  
pp. 987-992
Keyword(s):  
Patch Antenna ◽  
Impedance Matching ◽  
Dielectric Substrate ◽  
Microstrip Patch Antenna ◽  
Metal Sheet ◽  
Impedance Bandwidth ◽  
Circular Patch ◽  
Microstrip Patch ◽  
X Band ◽  
Simple Change

A wideband circular microstrip patch antenna (CMPA) has been presented employing a rectangular metal sheet superstrate. The proposed concept follows a unique, simple, and a flexible design approach to enhance the bandwidth of a circular patch. A simple change in the conventional antenna geometry has been suggested by adding a rectangular metal sheet superstrate, placed symmetrically above the patch. A cylindrical shaped foam spacer has been used to provide mechanical support to the optimized superstrate. The proposed antenna offers about 36% of impedance matching bandwidth ranging between 8.46 GHz to 12.06 GHz with a total bandwidth of 3.6 GHz. Whereas, a conventional circular patch, resonating at 9.96 GHz, hardly shows about 4.8% of impedance bandwidth (480 MHz) only. In addition to the enhanced bandwidth characteristics, the proposed antenna, also reveals a little increase in the gain throughout the operating frequency band. For the experimental validation, a set of antenna prototype has been fabricated using the commercially available dielectric substrate. The measured result is very closely agreed with the simulated predictions.

Optimization of a broadband directional gain microstrip patch antenna for X–Ku band application

2013 ◽  
Vol 5 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Anubhuti Khare ◽  
Rajesh Nema
Keyword(s):  
Patch Antenna ◽  
Middle Layer ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Microstrip Patch ◽  
Indirect Coupling ◽  
X Band ◽  
Different Dimensions ◽  
Rectangular Microstrip Antenna ◽  
Ku Band

In this paper, optimization of a microstrip patch antenna is presented. The optimization uses a genetic algorithm in the IE3DTM Simulator. The optimization is done in several steps, first by changing the position of parasitic patches on the top layer, second by placing a feeding patch at the middle layer of geometry, and third by indirect coupling between the top and middle layer patches. Overall, we have performed many possible iterations and found appropriate geometry. From this appropriate geometry we have achieved maximum directional gain (6.2–8.8 dBi) over a 6 GHz bandwidth slot, 38% impedance bandwidth of the X-band and 14.8% impedance bandwidth of the Ku-band. The broadband frequency of operation is demonstrated by single geometry. The geometry of a single probe fed rectangular microstrip antenna incorporating a slot, gap coupled with a parasitic and an active patch on geometry, has been studied. We have investigated the height between active and parasitic patches as 0.0525λ and the height between parasitic patches itself as 0.0525λ. We have investigated the enhancement in maximum directional gain by stacking geometry with one active patch and two parasitic patches of different dimensions. This optimized antenna is used for X-band and Ku-band applications. The hardware validation and simulation results are matched to the proposed design.

scholarly journals A Wideband Differential-Fed Microstrip Patch Antenna Based on Radiation of Three Resonant Modes

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Taohua Chen ◽  
Yueyun Chen ◽  
Rongling Jian
Keyword(s):  
Patch Antenna ◽  
Free Space ◽  
Impedance Matching ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Current Position ◽  
Microstrip Patch ◽  
Zero Current ◽  
Resonant Modes ◽  
Rectangular Strips

A wideband differential-fed microstrip patch antenna based on radiation of three resonant modes of TM12, TM30, and slot is proposed in this paper. Firstly, two symmetrical rectangular slots are cut on the radiating patch where the zero-current position of the TM30 mode excites another resonant slot mode. In addition, the slot’s length is enlarged to decrease the frequency of the slot mode with little effect on that of the TM30 mode. To further expand the impedance bandwidth, the width of patch is reduced to increase the frequency of the TM12 mode, while having little influence on that of the TM30 and slot modes. Moreover, a pair of small rectangular strips is adopted on the top of the feeding probes to achieve a good impedance matching. Finally, based on the arrangements above, a broadband microstrip patch antenna with three in-band minima is realized. The results show that the impedance bandwidth (Sdd11<−10 dB) of the proposed antenna is extended to 35.8% at the profile of 0.067 free-space wavelength. Meanwhile, the proposed antenna maintains a stable radiation pattern in the operating band.

SIW-fed microstrip patch antenna array for circular polarization

2017 ◽  
Vol 9 (9) ◽  
pp. 1877-1881 ◽  
Author(s):  
Laaya Sabri ◽  
Nasrin Amiri ◽  
Keyvan Forooraghi
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Patch Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
High Radiation ◽  
Microstrip Patch ◽  
X Band ◽  
Good Agreement

A new single-feed aperture-coupled, X-band microstrip patch antenna array with circular polarization (CP) is designed. CP is achieved using indented microstrip patches fed through the slots on a substrate integrated waveguide. The antenna has the high radiation efficiency more than 90% over the operating frequency. Impedance bandwidth (VSWR < 2) and axial ratio bandwidth (AR < 3 dB) of 11.8, and 10.9% is attained, respectively. Good agreement is achieved between simulated and measured results.

scholarly journals Design and Simulation of Rectangular Microstrip Patch Antenna with Triple Slot for X Band

2021 ◽  
Vol 9 (12) ◽  
pp. 91-98
Author(s):  
Neha Afreen
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Dielectric Substrate ◽  
Microstrip Patch Antenna ◽  
Feed Line ◽  
Microstrip Patch ◽  
X Band ◽  
Rectangular Microstrip Patch Antenna ◽  
Microstrip Feed Line ◽  
Microstrip Feed

Abstract: In the present work an attempt has been made to design and simulation of rectangular microstrip patch antenna with triple slot for X band using microstrip feed line techniques. HFSS High frequency simulator is used to analyse the proposed antenna and simulated the result on the return loss, radiation pattern and gain of the proposed antenna. The antenna is able to achieve in the range of 8-12 GHz for return loss of less than -10 dB. The operating frequency of the proposed antenna is 8.4 GHz & 11 GHz with dielectric substrate, ARLON of = 2.5 and h= 1.6mm. Keywords: ARLON substrate material, FEM, Microstrip Feed Line, X band

scholarly journals Design of Dual Band Circular Microstrip Patch Antenna with Slot for WLAN Applications

2018 ◽  
Vol 7 (2.7) ◽  
pp. 451
Author(s):  
L Nageswara Rao ◽  
B Ramesh ◽  
V Santhosh Kumar
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Impedance Matching ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Circular Patch ◽  
Microstrip Patch ◽  
Antenna Configuration ◽  
Primary Band

A composite double - band circular microstrip patch (MPA) with space opening for WLAN is intended. An investigated configuration is feasible for WLAN applications. An investigated configuration includes the circular patch and π - space resonator. The compact in the antenna size for the lower band is attained by adopting a π – shaped opening space on the ground plane. By balancing the model specifications, a circular patch resonator act at the primary band (5.2 GHz) and the π -  space slot act at the secondary band (2.4 GHz), while using the substrate substantial FR4 whichever carry dielectric constant of 4.4 (ɛr). The arranged antenna configuration has small in size, less weight, reduced cost and acceptable isolation. Designed structure presents the return loss less than -10 B and it is indicated with significant impedance matching, improved radiation pattern and good VSWR around 1 over the working bands. The investigated configuration is simulated and analyzed with HFSS.  

scholarly journals Design of Microstrip Patch Antenna for Dual-band Operation using Metal Ring Superstrate

2020 ◽  
Vol 8 (5) ◽  
pp. 4539-4543
Keyword(s):  
Patch Antenna ◽  
Dielectric Substrate ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Metal Ring ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Lower Band ◽  
Good Agreement

In this paper, a dual-band generation in rectangular microstrip patch antenna (RMPA) using a superstrate metal ring has been proposed. In this configuration, a metal ring is placed above the rectangular patch with the support of two dielectric posts. The metal ring behaves as a superstrate layer and resonator for the lower band, the other band is generated by microstrip patch and hence the combined configuration metal ring and patch gives dual-band characteristics. The lower band resonates at 9 GHz with an impedance bandwidth of 6.8% and higher band at 11.35 GHz with impedance bandwidth of 3.1%. The co-polarized peak gain values at these frequencies are 8.2 dBi and 10.1 dBi respectively. This may be used in applications like airborne and naval-radar. The prototypes are fabricated using commercially available dielectric substrate (RT-Duriod r = 2.2 and thickness h =1.6 mm). The measured results show good agreement with the simulated predictions.

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