Low-Profile Dual-Band Pattern Diversity Patch Antenna Based on Composite Right/Left-Handed Transmission Line

2017 ◽  
Vol 65 (6) ◽  
pp. 2808-2815 ◽  
Author(s):  
Sen Yan ◽  
Guy A. E. Vandenbosch
Keyword(s):  
Transmission Line ◽  
Patch Antenna ◽  
Band Pattern ◽  
Dual Band ◽  
Left Handed ◽  
Pattern Diversity ◽  
Low Profile

Novel dual band patch antenna With Gap coupled composite right/left-handed transmission line

2018 ◽  
Vol 11 (1) ◽  
pp. 87-93
Author(s):  
Z. Ahmed ◽  
M. M. Ahmed ◽  
M. B. Ihsan ◽  
A. A. Chaudhary ◽  
J. K. Arif
Keyword(s):  
Transmission Line ◽  
Patch Antenna ◽  
Frequency Ratio ◽  
Unit Cell ◽  
Dual Band ◽  
Rectangular Patch ◽  
Left Handed ◽  
At Resonance ◽  
Low Profile ◽  
Resonance Frequencies

AbstractA novel low profile dual band patch antenna is presented. It consists of a composite right/left-handed transmission line (CRLH TL) unit cell gap coupled with the radiating edge of a rectangular patch antenna. The dual band behavior is achieved by coupling the zeroth order resonance mode of CRLH TL and TM10mode of the patch antenna. It is shown that frequency ratio can be changed by varying the gap between the patch and CRLH TL unit cell. The proposed configuration enables frequency reconfigurability by changing the CRLH TL unit cell using a switch. A prototype of the antenna having frequency ratiof2/f1= 1.08 is designed and fabricated. The proposed antenna shows measuredS11≤ −10 dB bandwidth of 100 and 50 MHz at resonance frequencies off1= 4.84 andf2= 5.22 GHz, respectively. A 2 × 2 dual band CRLH TL coupled patch array is also presented, showing more than 12.7 dBi gain at both resonance frequencies.

A compact dual-band D-CRLH-based antenna with self-isolation functionality

2021 ◽  
pp. 1-10
Author(s):  
Mahmoud A. Abdalla ◽  
Mohamed El Atrash ◽  
Ahmed A. Abdel Aziz ◽  
Mohamed I. Abdelnaser
Keyword(s):  
Patch Antenna ◽  
Planar Waveguide ◽  
Dual Band ◽  
Resonant Frequencies ◽  
Left Handed ◽  
Directional Radiation ◽  
Full Wave ◽  
Compact Size ◽  
Filtering Function ◽  
Filter Structures

Abstract This paper presents a compact dual-band filtering antenna without extra employing of filter structures. The antenna is designed using a planar dual-composite right/left-handed (D-CRLH) transmission line unit cell, where the filtering function is achieved through current cancellation between the D-CRLH resonators. The antenna is designed to function at 3.0 and 5.1 GHz, which can serve different WLAN applications. The antenna is a co-planar waveguide fed with a very compact size of only 30 × 16 mm2. Compared to the conventional patch antenna, the antenna size is only 17% at 3.0 GHz and 31% at 5.1 GHz. Despite the small size, the antenna preserves a good omni-directional radiation pattern at the two resonant frequencies with a measured realized gain of 2 and 2.7 dB, respectively. At the stopband in-between the two resonant bands, the reflection coefficient is almost 0 dB at 4.25 GHz and complete non-radiation is proved with a −11 dB measured realized gain. The different antenna filtering functions are verified by full-wave simulation and measurements.

SIMPLIFIED EXTENDED COMPOSITE RIGHT/LEFT-HANDED TRANSMISSION LINE STRUCTURE FOR DUAL-BAND APPLICATIONS

2010 ◽  
Vol 15 ◽  
pp. 137-144 ◽  
Author(s):  
Li Qiang ◽  
Hongmin Lu ◽  
Wei Zhao ◽  
Ji-Kang Wang ◽  
Bing Liu
Keyword(s):  
Transmission Line ◽  
Dual Band ◽  
Line Structure ◽  
Left Handed

scholarly journals Low-Profile Dual-Band Stacked Microstrip Monopolar Patch Antenna for WLAN and Car-to-Car Communications

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 69575-69581 ◽  
Author(s):  
Shuai Gao ◽  
Lei Ge ◽  
Dengguo Zhang ◽  
Wei Qin
Keyword(s):  
Patch Antenna ◽  
Dual Band ◽  
Low Profile
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