scholarly journals Compact Wideband Microstrip Patch Antenna based on High Impedance Surface

2018 ◽  
Vol 8 (4) ◽  
pp. 3149-3152
Author(s):  
S. Nelaturi ◽  
N. V. S. N. Sarma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Axial Ratio ◽  
Fractal Boundary ◽  
Impédance Surface ◽  
Impedance Surface ◽  
Microstrip Patch ◽  
High Impedance ◽  
Close Relationship ◽  
High Impedance Surface

A compact single probe feed asymmetrical semicircular fractal boundary patch antenna based on HIS (high impedance surface) is proposed for wide bandwidth at Wi-Fi band. Circular polarization operation can be obtained by embedding semi-circle fractal curves along the edges of the square patch antenna. The 10-dB return loss bandwidth is 15.13% (2.32GHz-2.70GHz). The 3-dB axial ratio bandwidth is 4.11% (2.38GHz-2.48GHz). The close relationship between simulation results and measured results establishes the antenna usefulness.

scholarly journals Varying operating frequency of concentric circular ring patch antenna using high impedance surface

2018 ◽  
Vol 7 (3.29) ◽  
pp. 57
Author(s):  
Rangarao. Orugu ◽  
Srilatha. Gundapaneni ◽  
N Maryleena ◽  
A K.Chaithanya Varma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Circular Ring ◽  
Impédance Surface ◽  
Impedance Surface ◽  
Antenna Size ◽  
High Impedance ◽  
Circular Patch Antenna ◽  
High Impedance Surface ◽  
Microstrip Feed

In this paper, we design a concentric circular patch antenna excited by microstrip feed and operates at 5.4269 GHz and 6.9419 GHz. After designing the antenna, we would like to tune the frequency without changing antenna size. For that purpose, we use high impedance surface structure to tune the antenna at two different frequencies. A simple mushroom like structure is used as high impedance surface. We will analyze antenna parameters like return loss, gain, directivity, radiation patterns, efficiency, proposed antenna with and without high impedance surfaces and compare the results.  

scholarly journals Miniaturized Circularly Polarized Stacked Patch Antenna on Reactive Impedance Surface for Dual-Band ISM and WiMAX Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Kush Agarwal ◽  
Saugata Dutta
Keyword(s):  
Frequency Band ◽  
Patch Antenna ◽  
Axial Ratio ◽  
Dual Band ◽  
Impédance Surface ◽  
Impedance Surface ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Lower Band ◽  
Lower Frequency Band

This paper proposes a compact microstrip patch antenna for operating in 2.4 GHz ISM and 3.5 GHz WiMAX bands with circularly polarized (CP) radiation. The CP radiation in dual-bands is a result of two multilayered truncated corner stacked square patches, while the reactive impedance surface (RIS) is used for antenna size miniaturization for the lower operating frequency band. Since the overall lateral antenna dimensions are controlled by the lower frequency band (higher wavelength), reducing the electrical size of the antenna for lower band results in overall smaller antenna dimensions. The measured 3-dB axial ratio bandwidths of the in-house fabricated antenna prototype are 6.1% (2.40–2.55 GHz) for the lower band and 5.7% (3.40–3.60 GHz) for the upper band, while the 10-dBS11bandwidths for the two bands are 8.1% (2.39–2.59 GHz) and 6.9% (3.38–3.62 GHz), respectively. The maximum gain at boresight for the lower band is 2.93 dBic at 2.5 GHz, while the gain for the upper band is 6.26 dBic at 3.52 GHz. The overall volume of the proposed antenna is 0.292λo × 0.292λo × 0.044λo, whereλois the corresponding free-space wavelength at 2.5 GHz.

Back lobe reduction of patch antenna by using high-impedance surface

2015 ◽  
Author(s):  
Dong Wang Dong Wang ◽  
Xing-Chang Wei Xing-Chang Wei ◽  
Jian-Bo Zhang Jian-Bo Zhang ◽  
Yu-Fei Shu Yu-Fei Shu ◽  
De-Cao Yang De-Cao Yang
Keyword(s):  
Patch Antenna ◽  
Impédance Surface ◽  
Impedance Surface ◽  
High Impedance ◽  
High Impedance Surface

Backfire suppressed low profile aperture coupled stacked patch antenna backed by a high impedance surface (HIS) reflector for UHF RFID reader applications

2021 ◽  
pp. 1-6
Author(s):  
Sangkil Kim
Keyword(s):  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Uhf Rfid ◽  
Impédance Surface ◽  
Impedance Surface ◽  
High Impedance ◽  
Low Profile ◽  
Suppression Technique ◽  
High Impedance Surface ◽  
Stacked Patch Antenna

In this paper, a backfire suppressed aperture coupled circularly polarized (CP) stacked patch antenna for universal ultra-high frequency (UHF) radio frequency identification applications is presented. Cross-polarized backfire radiation patterns were successfully suppressed by a planar high impedance surface (HIS) reflector. The size of the fabricated antenna is 250 × 250 × 26.9 mm3 (0.71λ0 × 0.71λ0 × 0.076λ0) and its peak gain value of 7.1 dBi is measured. The distance between the antenna and the HIS reflector is only 4.8 mm (0.014 λ0). The HIS reflector suppressed cross-pol backfire radiations by about 10 dB. Detailed antenna and HIS reflector design are discussed thoroughly in this paper. The presented backfire suppression technique using the HIS reflector is scalable to other applications and frequency bands. This paper demonstrates the feasibility of the HIS structure at UHF band.

Dual band circular polarized bow tie slotted patch antenna over high impedance surface for WiMAX application

2019 ◽  
Vol 12 (4) ◽  
pp. 303-308
Author(s):  
Kumar Goodwilll ◽  
Neha Singh ◽  
M.V. Kartikeyan
Keyword(s):  
Patch Antenna ◽  
Coplanar Waveguide ◽  
Dual Band ◽  
Impédance Surface ◽  
Impedance Surface ◽  
High Impedance ◽  
Linearly Polarized ◽  
Incident Waves ◽  
High Impedance Surface ◽  
Bow Tie

AbstractA novel planar dual-band bow-tie slotted patch antenna backed by high-impedance surface (HIS) is designed at 2.5 and 3.5 GHz for wireless application. The antenna employs coplanar waveguide fed patch and bow-tie slot as radiating elements. The bow-tie slot enables dual-band operation for the antenna. The HIS is made asymmetric in design to make it polarization dependent. This polarization-dependent HIS is eventually designed to reflect circularly polarized waves from linearly polarized incident waves.

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