A triple‐band circularly polarized annular ring antenna with asymmetric ground plane for wireless applications

In this chapter, ultra wide band angular ring antenna has been proposed for wireless applications. It has been observed that antenna resonate from 2.9 to 13.1 GHz which has 10.2 GHz bandwidth. Further, it is observed that antenna has nearly omni-directional radiation pattern for E and H-plane at 3.5, 5.8, and 8.5 GHz. The theoretical analysis of the proposed has been done using circuit theory analysis. It was also found using simulation that antenna has good input and output response of 0.2 ns. Proposed antenna measured, simulated, and theoretical results matches for antenna characteristics, i.e., reflection coefficient and radiation pattern. Bandwidth of antenna lies between 2.9 and 13.1 GHz, so this antenna is suitable for Wi-Fi, Wi-Max, digital communication system (DCS), satellite communication, and 5G applications.

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A CPW - Fed Octagonal Ring Shaped Wide Band Antenna for Wireless Applications

Advanced Electromagnetics ◽

10.7716/aem.v7i3.769 ◽

2018 ◽

Vol 7 (3) ◽

pp. 87-92 ◽

Cited By ~ 2

Author(s):

P. Khanna ◽

A. Sharma ◽

A. K. Singh ◽

A. Kumar

Keyword(s):

Microstrip Antenna ◽

Return Loss ◽

Ground Plane ◽

Wide Band ◽

Impedance Bandwidth ◽

Wireless Applications ◽

High Frequency Structure Simulator ◽

High Impedance ◽

Ring Antenna ◽

Operating Bandwidth

A CPW – Fed octagonal ring shaped antenna for wideband operation is presented. The radiating patch of proposed octagonal ring antenna consists of symmetrical slot in place of conventional annular ring microstrip antenna. The ground plane consists of two rectangular slots, while the radiator and the ground plane are on same plane that utilizes the space available around the radiator. The proposed antenna is simulated through Ansoft’s High Frequency Structure Simulator (HFSS). Measured result shows balanced agreement with the simulated results. The prototype is taken with dimensions 47 mm × 47 mm × 1.6 mm that achieves good return loss, constant group delay and good radiation patterns over the entire operating bandwidth of 2.0 to 9.5 GHz (7.5 GHz). The proposed antenna achieves high impedance bandwidth of 130%. Thus, the proposed antenna is applicable for S and C band applications.

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A NEW TRIPLE BAND CIRCULARLY POLARIZED SQUARE SLOT ANTENNA DESIGN WITH CROOKED T AND F-SHAPE STRIPS FOR WIRELESS APPLICATIONS

Progress In Electromagnetics Research ◽

10.2528/pier11081506 ◽

2011 ◽

Vol 121 ◽

pp. 1-18 ◽

Cited By ~ 38

Author(s):

Sasan Ahdi Rezaeieh ◽

Mesut Kartal

Keyword(s):

Antenna Design ◽

Slot Antenna ◽

Circularly Polarized ◽

Wireless Applications ◽

Triple Band

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Triple band circularly polarized compact microstrip antenna with defected ground structure for wireless applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078715000288 ◽

2015 ◽

Vol 8 (6) ◽

pp. 943-953 ◽

Cited By ~ 13

Author(s):

Mukesh Kumar Khandelwal ◽

Binod Kumar Kanaujia ◽

Santanu Dwari ◽

Sachin Kumar ◽

Anil Kumar Gautam

Keyword(s):

Circular Polarization ◽

Ground Plane ◽

Defected Ground Structure ◽

Radiation Characteristics ◽

Circularly Polarized ◽

Left Hand ◽

Right Hand ◽

Defected Ground Structures ◽

Ground Structures ◽

Triple Band

Asymmetric slits loaded irregular shaped microstrip patch antenna with three different ground structures is proposed. All three antennas show triple band characteristics. First antenna with regular ground plane resonates at 1.95, 2.4, and 4.90 GHz with good radiation characteristics and shows right-hand circular polarization at 1.95 GHz. 18.75% of compactness is achieved with triple band characteristics. Further, same patch is used with different defected ground structures. Second antenna resonates at 1.85, 2.4, and 4.85 GHz with suppressed cross-polarization level and antenna shows right-hand circular polarization at 1.85 and 4.85 GHz. Compactness is further improved to the value of 22.91%. The third antenna resonates at 1.95, 2.4, and 4.85 GHz with better gain and radiation characteristics and antenna shows right-hand circular polarization at 1.95 and 2.4 GHz. The small frequency ratio f2/f1 is achieved and the value of f2/f1 is 1.29 and 1.23 for second and third configuration, respectively. Proposed structures show right-hand circularly polarized with suppressed left-hand circularly polarized radiations and suitable for fixed mobile wireless communication applications. All structures are analyzed using Ansoft HFSS v.14 based on finite element method and measured results satisfy the simulated results.

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