Miniature multiband monopole antenna for WWAN operation in laptop computer

2010 ◽  
Vol 46 (1) ◽  
pp. 21 ◽  
Author(s):  
H.-W. Liu ◽  
C.-F. Yang
Keyword(s):  
Monopole Antenna ◽  
Laptop Computer

Design of a novel triple-band monopole antenna for WLAN/WiMAX MIMO applications in the laptop computer

Circuit World ◽  
2019 ◽  
Vol 45 (4) ◽  
pp. 257-267 ◽  
Author(s):  
Jayshri Sharad Kulkarni ◽  
Raju Seenivasan
Keyword(s):  
Antenna Array ◽  
Cost Effective ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Laptop Computer ◽  
Content Type ◽  
Laptop Computers ◽  
Triple Band

Purpose This paper aims to present a triple-band monopole antenna design of 0.2-mm thickness with an overall dimension of 21 × 8 mm2 for wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) multiple input and multiple output (MIMO) applications in the laptop computer. Design/methodology/approach It comprises three monopole radiating elements, namely, strip AD (inverted C), strip EG (inverted J) and strip FI (inverted U) along with two rectangular open-end tuning stubs, namely, “m” and “n” of size 1.5 × 0.9 mm2 and 1.8 × 0.9 mm2, respectively. The proposed structure is compact, cost-effective and easy to integrate inside the laptop computers. Findings This structure excites three WLAN (2.4/5.2/5.8 GHz) and three WiMAX (2.3/3.3/5.5 GHz) bands. The proposed antenna array elucidates that it has measured −10dB impedance bandwidth of 11.86 per cent (2.22-2.50) GHz in a lower band (f_l), 6.83 per cent (3.25-3.48) GHz in medium band (f_m) and 16.84 per cent (5.00-5.92) GHz in upper band (f_u). The measured gain and radiation efficiency are above 3.64dBi and 75 per cent, respectively, and isolation better than −20dB. The envelope correlation coefficient (ECC) is less than 0.004. The simulated and measured results are in good concurrence, which confirms the applicability of the proposed antenna array for MIMO applications in the laptop computer. Originality/value The proposed antenna is designed without using vias, reactive elements and matching circuits for excitation of WLAN/WiMAX bands in the laptop computers. The design also does not require any additional ground for mounting the antenna. Further, the antenna array, formed by using the same antenna design, does not need additional isolating elements and is designed in such a way that the system ground itself acts as an isolating element. The proposed antenna has a low profile and is ultra-thin, cost-effective and easy to manufacture and can be easily embedded inside the next-generation laptop computers.

Very Small-Size Uniplanar Printed Monopole Antenna for Dual-Band WLAN Laptop Computer Applications

2017 ◽  
Vol 65 (6) ◽  
pp. 2916-2922 ◽  
Author(s):  
Chow-Yen-Desmond Sim ◽  
Chih-Chiang Chen ◽  
Xiu Yin Zhang ◽  
Yuan-Lung Lee ◽  
Chih-Yang Chiang
Keyword(s):  
Computer Applications ◽  
Monopole Antenna ◽  
Dual Band ◽  
Laptop Computer ◽  
Printed Monopole Antenna ◽  
Printed Monopole

scholarly journals Design of a Novel Triple Band Monopole Antenna for WLAN/WiMAX MIMO Applications in the Laptop Computer

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Jayshri Kulkarni ◽  
Raju Seenivasan ◽  
V. Abhaikumar ◽  
Deepak Ram Prasath Subburaj
Keyword(s):  
Antenna Array ◽  
Correlation Coefficient ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Laptop Computer ◽  
Multiple Input ◽  
Medium Band ◽  
Better Than ◽  
Triple Band

This paper presents a triple band monopole antenna design with an overall size of 21  ×  8  mm2 for WLAN/WiMAX Multiple Input and Multiple Output (MIMO) applications in the laptop computer. It comprises of three monopole radiating elements, along with two rectangular open-ended tuning stubs. This structure excites 2.4/5.2/5.8 GHz WLAN and 2.3/3.3/5.5 GHz WiMAX bands. The prototype testing of proposed antenna array formed by using the same antenna design shows that, it has measured -10dB impedance bandwidth of 11.86% (2.22-2.50 GHz) in a lower band (fl), 5% (3.25-3.42 GHz) in medium band (fm) and 16.84% (5.00-5.92 GHz) in upper band (fu). The measured gain and radiation efficiency are well above 3.65 dBi and 75%, respectively, throughout the operating bands. Also, the measured isolation between two antennas is better than -20dB and envelope correlation coefficient (ECC) is less than 0.004 across the three bands of interest. This confirms the applicability of the proposed antenna array for MIMO applications in the laptop computer.

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