Triple-band Compact Monopole Antenna Using Defected Ground Plane

2018 ◽  
Author(s):  
Saurabh Kumar ◽  
Priyadarshi Suraj ◽  
Ritesh Kr. Badhai
Keyword(s):  
Ground Plane ◽  
Monopole Antenna ◽  
Defected Ground Plane ◽  
Triple Band

Compact UWB monopole antenna with reconfigurable band-notch characteristics

2019 ◽  
Vol 12 (3) ◽  
pp. 252-258 ◽  
Author(s):  
Liping Han ◽  
Jing Chen ◽  
Wenmei Zhang
Keyword(s):  
Ground Plane ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Dual Band ◽  
Radiation Patterns ◽  
Pin Diodes ◽  
Notch Band ◽  
Rectangular Patch ◽  
Compact Size ◽  
Defected Ground Plane

AbstractA compact ultra-wideband (UWB) monopole antenna with reconfigurable band-notch characteristics is demonstrated in this paper. It is comprised of a modified rectangular patch and a defected ground plane. The band-notch property in the WiMAX and WLAN bands is achieved by etching an open-ended slot on the radiating patch and an inverted U-shaped slot on the ground plane, respectively. To obtain the reconfigurable band-notch performance, two PIN diodes are inserted in the slots, and then the notch-band can be switched by changing the states of the PIN diodes. The antenna has a compact size of 0.47 λ1 × 0.27 λ1. The simulated and measured results indicate that the antenna can operate at a UWB mode, two single band-notch modes, and a dual band-notch mode. Moreover, stable radiation patterns are obtained.

A Novel Triple-Band Monopole Antenna for WLAN/WiMAX/RFID Applications

2013 ◽  
Vol 441 ◽  
pp. 154-157
Author(s):  
Yong Pan ◽  
Zi Ye Hou ◽  
Jiang Xiong ◽  
Kai Hua Liu
Keyword(s):  
Impedance Matching ◽  
Ground Plane ◽  
Wide Band ◽  
Circular Ring ◽  
The Third ◽  
Resonant Modes ◽  
Circular Defect ◽  
Rfid Applications ◽  
Defected Ground Plane ◽  
Triple Band

A miniaturized multi-frequency antenna is proposed. The proposed antenna can generate three separate impedance bandwidths to cover all the 2.4/5.8 GHz WLAN/RFID operating bands and the 2.5/3.5/5.5 GHz WiMAX bands. The proposed microstrip-fed antenna mainly consists of a circular ring, four semicircular rings, a rectangle strip, and a defected ground plane. By adding four semicircular rings in the circular ring, the antenna excites two resonant modes and is with miniaturization structure. Because of the introduction of the cambered ground plane with an circular-defect, the third wide band with better impedance matching is obtained. A prototype is experimentally tested, and the measured results show good radiation patterns and enough gains across the operation bands.

scholarly journals A CPW-Fed Monopole Antenna with Double Rectangular Rings and Vertical Slots in the Ground Plane for WLAN/WiMAX Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Sangjin Jo ◽  
Hyunjin Choi ◽  
Jaehyuk Lim ◽  
Beomsoo Shin ◽  
Sangyeol Oh ◽  
...  
Keyword(s):  
Reflection Coefficient ◽  
Numerical Simulations ◽  
Radiation Pattern ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Compact Size ◽  
Measured Impedance ◽  
Triple Band

A compact triple-band monopole antenna consisting of double rectangular rings and vertical slots cut into the ground is proposed for WLAN and WiMAX operations. The antenna has a compact size of 27.1 × 38.8 × 1.6 mm3, with simulated and measured impedance bandwidths of 2.37~2.81, 3.21~3.82, and 4.61~6.34 GHz with a reflection coefficient of less than −10 dB. The antenna also exhibits an almost omnidirectional radiation pattern and stable gain levels in the triple bands. The characteristics of the proposed antenna have been investigated using the numerical simulations and experiments.

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