A new compact dual band printed monopole antenna using electromagnetic band gap structures

Circuit World ◽  
2017 ◽  
Vol 43 (2) ◽  
pp. 56-62 ◽  
Author(s):  
El Amjed Hajlaoui
Keyword(s):  
Band Gap ◽  
Monopole Antenna ◽  
Dual Band ◽  
Area Network ◽  
Radiation Patterns ◽  
Electromagnetic Band Gap ◽  
Content Type ◽  
New Type ◽  
Printed Monopole Antenna ◽  
Printed Monopole

Purpose The purpose of this paper is to present a new dual-band printed monopole antenna with a partial ground with two notched bands based on electromagnetic band gap (EBG) structures. A new type of EBG antenna with radiation patterns and antenna gains over the operating bands has been developed. Design/methodology/approach The proposed antenna consists of a pair of EBG structures using a transmission line model. The proposed antenna is designed on an FR4 substrate with a thickness of 1 mm and permittivity (er) = 4.3. Findings The measured results show good dual-band operations with −10 dB impedance bandwidths of 9.1 and 36.2 per cent centered at 2.45 and 6.364 GHz, respectively, which covers the wireless local area network (WLAN) operating bands. Originality/value A new type of EBG antenna with radiation patterns and antenna gains over the operating bands has been developed.

Low profile dual band-stop super wideband printed monopole antenna with polarization diversity

2019 ◽  
Vol 11 (7) ◽  
pp. 694-702
Author(s):  
Murli Manohar ◽  
Rakhesh Singh Kshetrimayum ◽  
Anup Kumar Gogoi
Keyword(s):  
Local Area Network ◽  
Monopole Antenna ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Polarization Diversity ◽  
Low Profile ◽  
Compact Size ◽  
Printed Monopole Antenna ◽  
Printed Monopole

AbstractA low profile super-wideband polarization diversity printed monopole antenna with dual band-notched characteristics is presented the first time. The designed antenna comprises two arched shaped radiating elements with two triangular tapered microstrip feed lines (TTMFL) and two arched shaped partial ground planes, which covers an enormously wide impedance bandwidth (BW) from 1.2 to 25 GHz (ratio BW of 20.8:3) for reflection coefficient |S11| < −10 dB. To ensure the high port isolation (better than − 30 dB) between two feeding ports over the whole bands, two analogous antennas have been kept perpendicular to each other at a distance of 1 mm. In addition, the dual band-notched performance in wireless local area network (5–6 GHz) and X-band (7.2–8.5 GHz) is generated by employing a pair of open-circuited stubs (L-shaped stub and horizontal stub) to the TTMFL. Envelop correlation coefficient has been computed to study the polarization diversity performance. Finally, the proposed antenna was fabricated and tested successfully. Measured results indicate that the proposed antenna is an appropriate candidate for the polarization diversity applications. The proposed antenna has a compact size of 40 × 70 × 0.787 mm3, high isolation, and occupies a small space compared with the existing antennas.

Square microstrip multi band fractal antenna using EBG structure for wireless applications

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Suresh Akkole ◽  
Vasudevan N.
Keyword(s):  
Band Gap ◽  
Frequency Band ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Dielectric Materials ◽  
Fractal Antenna ◽  
Electromagnetic Band Gap ◽  
Content Type ◽  
New Type ◽  
Multi Band

Purpose Application of electromagnetic band gap (EBG) i.e. electromagnetic band gap technique and its use in the design of microstrip antenna and MIC i.e. microwave integrated circuits is becoming more attractive. This paper aims to propose a new type of EBG fractal square patch microstrip multi band fractal antenna structures that are designed and developed. Their performance parameters with and without EBG structures are investigated and minutely compared with respect to the resonance frequency, return loss, a gain of the antenna and voltage standing wave ratio. Design/methodology/approach The fractal antenna geometries are designed from the fundamental square patch and then EBG structures are introduced. The antenna geometry is optimized using IE3D simulation tool and fabricated on low cost glass epoxy FR4, with 1.6 mm height and dielectric materials constant of 4.4. The prototype is examined by means of the vector network analyzer and antenna patterns are tested on the anechoic chamber. Findings Combining the square fractal patch antenna with an application of EBG techniques, the gain of microstrip antenna has been risen up and attained good return loss as compared to the antennas without EBG structures. The designs exhibit multi-frequency band characteristics extending in between 1.70 and 7.40 GHz. Also, a decrease in antenna size of 34.84 and 59.02 per cent for the first and second iteration, respectively, is achieved for the antenna second and third without EBG. The experimental results agree with that of simulated values. The presented microstrip antenna finds uses in industrial, scientific and medical (ISM) band, Wi-Fi and C band. This antenna can also be used for satellite and radio detection and range devices for communication purposes. Originality/value A new type of EBG fractal square patch microstrip antenna structures are designed, developed and compared with and without EBG. Because of the application of EBG techniques, the gain of microstrip antenna has been risen up and attained good return loss as compared to the antennas without EBG structures. The designs exhibit multi-frequency band characteristics extending in between 1.70 and 7.40 GHz, which are useful for Wi-Fi, ISM and C band wireless communication.

Small-size LTE/WWAN monopole antenna with octa-band operation for 4 G mobile phone

2016 ◽  
Vol 9 (3) ◽  
pp. 665-673
Author(s):  
Jui-Han Lu ◽  
Ying-Sheng Fang
Keyword(s):  
Mobile Phone ◽  
Monopole Antenna ◽  
Area Network ◽  
Wide Area Network ◽  
Printed Antenna ◽  
Antenna Size ◽  
Term Evolution ◽  
Printed Monopole Antenna ◽  
Printed Monopole

By introducing a modified F-shaped feeding strip and dual parasitic shorted strips, a small-size wireless wide area network/long-term evolution (WWAN/LTE) printed antenna is proposed and embedded in the 4 G mobile phone with octa-band operation. The operating impedance bandwidths (RL ≥ 6 dB) of 263/1093 MHz can be obtained across the LTE/WWAN bands, respectively. The overall antenna size of the proposed printed monopole antenna (MA) is only 35 × 10 × 0.8 mm3. Meanwhile, this small-size MA provides the measured peak gains and antenna efficiencies of 2.0/3.6 dBi and 80/75% for the LTE/WWAN bands, respectively.

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