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.

scholarly journals UWB elliptical patch monopole antenna with dual-band notched characteristics

2019 ◽  
Vol 9 (5) ◽  
pp. 3591
Author(s):  
A H Majeed ◽  
K H Sayidmarie
Keyword(s):  
Radiation Pattern ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Experimental Results ◽  
Dual Band ◽  
New Approach ◽  
Compact Size

<p class="Default">In this paper, a new approach to the design of an UWB monopole antenna with dual band-notched characteristics is presented.   The antenna has the form of an elliptical monopole over a ground plane having an elliptical slot to achieve the UWB. The dual-band notch function is created by inserting a U-shaped and a C-shaped slots on the radiating patch, thus no extra size is needed. The proposed antenna shows a good omnidirectional radiation pattern across the band from 3.2 to more than 14 GHz. The dual band-rejection is for 4.88-5.79GHz centered at 5.4GHz and 7.21-8.46 GHz centered at 7.8 GHz. The antenna prototype using the FR-4 substrate with ε<sub>r</sub>=4.3 has a compact size of 25mm×25 mm ×1.45mm. The fabricated prototype showed experimental results comparable to those obtained from the simulations.</p>

scholarly journals A Compact ACS-Fed Tri-band Microstrip Monopole Antenna for WLAN/WiMAX Applications

2018 ◽  
Vol 7 (5) ◽  
pp. 87-93 ◽  
Author(s):  
D. Kahina ◽  
C. Mouloud ◽  
D. Mokrane ◽  
M. Faiza ◽  
A. Rabia
Keyword(s):  
Radiation Pattern ◽  
Return Loss ◽  
Simple Structure ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Radiation Patterns ◽  
Total Size ◽  
Resonant Frequencies ◽  
Compact Size ◽  
Microstrip Monopole Antenna

This paper proposes a novel small asymmetric coplanar strip (ACS) fed tri-band monopole antenna for WLAN and WiMAX applications. To tune and create multiple resonant frequencies, the exciting strip of monopole antenna is connected to two different arms which are a J-shaped directed toward the asymmetric ground plane and an open stub. The proposed monopole antenna with a total size of 14.6 x17.5 mm2 is fabricated and tested. The measured results indicate that the antenna has impedance bandwidths for 10-dB return loss reach about 500 MHz (2.01-2.52 GHz), 230 MHz (3.48-3.71 GHz) and 1.2GHz (5.59-6.72 GHz) which cover widely the 2.4/5.8 GHz WLAN bands and the 3.5GHz WiMAX band. The simulated radiation patterns of the proposed antenna at the three resonant frequencies have a dipole-like radiation pattern in both E-and H-Planes. The compact size, the simple structure and good radiation performances of the proposed antenna makes it well-suited forthe intended applications.

High gain low profile wideband dual-layered substrate microstrip antenna based on multiple parasitic elements

2017 ◽  
Vol 10 (4) ◽  
pp. 453-459
Author(s):  
Haixiong Li ◽  
Bozhang Lan ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Reflection Coefficient ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Low Profile ◽  
Layered Substrate ◽  
Measured Impedance ◽  
Peak Gain

In this paper, a high gain broadband low profile microstrip antenna with the dual-layered substrate and four parasitic metal elements is presented. The proposed microstrip antenna is mainly composed of four parts: four circular parasitic metal patches with dual arced breaches, a rectangular metal patch sandwiched between substrates, a square ground plane, and two-square substrates. The circular parasitic elements are the main radiation structure and determine the characteristics of the proposed antenna are closely related to the parasitic elements. The proposed antenna has been fabricated for experimental measurement. The reflection coefficient, radiation pattern, radiation efficiency, and gain have been studied in detail. The simulated and measured impedance bandwidth is 27.0% (3.30–4.33 GHz), the maximum realized peak gain reaches up to 6.52 dBi at the frequency of 3.65 GHz. The radiation pattern has a single peak which is perpendicular to the surface of the substrate. The proposed antenna is suitable to be applied in the 5G mobile or WiMAX wireless communication. Dual antenna with a pair of parasitic elements has been investigated numerically to explain the principle of the proposed antenna.

Compact Triple/Quadruple-Band Reconfigurable Monopole Antenna for Wireless Applications

2021 ◽  
pp. 2150277
Author(s):  
Asmaa Zugari ◽  
Wael Abd Ellatif Ali ◽  
Mohammad Ahmad Salamin ◽  
El Mokhtar Hamham
Keyword(s):  
Simple Structure ◽  
Low Cost ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Pin Diode ◽  
Wireless Applications ◽  
Rectangular Patch ◽  
Antenna Performance ◽  
Compact Size ◽  
Multi Band

In this paper, a compact reconfigurable tri-band/quad-band monopole antenna is presented. To achieve the multi-band behavior, two right-angled triangles were etched in a conventional rectangular patch, and a partial ground plane is used. Moreover, the proposed multi-band antenna is printed on a low cost FR4 epoxy with compact dimensions of 0.23[Formula: see text], where [Formula: see text] is calculated at the lowest resonance frequency. To provide frequency agility, a metal strip which acts as PIN diode was embedded in the frame of the modified patch. The tri-band/quad-band antenna performance in terms of reflection coefficient, radiation patterns, peak gain and efficiency was studied. The measured results are consistent with the simulated results for both cases. The simple structure and the compact size of the proposed antenna could make it a good candidate for multi-band wireless applications.

scholarly journals Analysis and design of a triple band metamaterial simplified CRLH cells loaded monopole antenna

2016 ◽  
Vol 9 (4) ◽  
pp. 903-913 ◽  
Author(s):  
Mahmoud Abdelrahman Abdalla ◽  
Zhirun Hu ◽  
Cahyo Muvianto
Keyword(s):  
Simple Structure ◽  
Monopole Antenna ◽  
Proof Of Concept ◽  
Analysis And Design ◽  
Design Procedures ◽  
Left Handed ◽  
Full Wave ◽  
Compact Size ◽  
Resonance Frequencies ◽  
Triple Band

The design and analysis of meta-material inspired loaded monopole antenna for multiband operation are reported. The proposed antenna consists of multi resonators inspired from half mode composite right/left handed cells, which has a simple structure, compact size, and provides multiband functionalities. As a proof of concept, a triple band antenna covering all possible WiMAX operating bands, has been designed, fabricated, and characterized. The hosting monopole patch itself generates resonance for 3.3–3.8 GHz band, whereas the loaded metamaterial cells add extra resonance frequencies. The loading of two resonator cells introduces two extra resonances for 2.5–2.7 GHz and 5.3–5.9 GHz bands, respectively. The antenna's operating principle and design procedures with the aid of electromagnetic full wave simulation and experimental measurements are presented. The antenna has good omnidirectional patterns at all three bands. The monopole patch size is 13.5 × 6.5 mm2and the whole antenna size (including the feed line) is 35 × 32 mm2. Compared with conventional single band microstrip patch radiator, the radiator size of this antenna is only 8.5% at 2.5 GHz, 17% at 3.5 GHz, and 37% at 5.5 GHz.

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.

Compact hybrid fractal antenna for wideband wireless applications

2016 ◽  
Vol 9 (5) ◽  
pp. 1191-1196 ◽  
Author(s):  
Yogesh Kumar Choukiker ◽  
Jagadish Chandra Mudiganti
Keyword(s):  
Impedance Matching ◽  
Ground Plane ◽  
Fractal Antenna ◽  
Koch Curve ◽  
Antenna Structure ◽  
Wireless Applications ◽  
Antenna Performance ◽  
Compact Size ◽  
Measured Impedance ◽  
Acceptable Agreement

A compact size hybrid fractal antenna is proposed for the application in wideband frequency range. The proposed antenna structure is the combination of Koch curve and self-affine fractal geometries. The Koch curve and self-affine geometries are optimized to achieve a wide bandwidth. The feed circuit is a microstrip line with a matching section over a rectangular ground plane. The measured impedance matching fractal bandwidth (S11 ≤ −10 dB) is 72.37% from 1.6 to 3.4 GHz. An acceptable agreement is obtained from the simulated and measured antenna performance parameters.

scholarly journals A Modified Rectangular Mid-band Microstrip Slot Antenna for WLAN, WiFi and 5G Applications

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Ajay Thatere ◽  
◽  
Sachin Khade ◽  
Vipul Lande S ◽  
◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Reflection Coefficient ◽  
Radiation Pattern ◽  
Current Distribution ◽  
Ground Plane ◽  
Surface Current ◽  
Slot Antenna ◽  
Current Gain ◽  
Wide Bandwidth ◽  
Left And Right

A modified rectangular Microstrip slot antenna for numerous applications like WLAN, Wi-Fi 5, satellite telecommunication and 5G application is portrayed. The proposed antenna has dimension of 25×30×1.6 mm3. The structure consists of partial ground and DGS. The proposed design is embedded on FR4 lossy substrate having dielectric constant of 4.3 and thickness of 1.6 mm. Two similar inverted L shape CLLR are introduced at left and right edge of the ground plane to improve current distribution and to achieve wide bandwidth. The results like reflection coefficient, surface current, gain, directivity, VSWR, impedance and radiation pattern are found up to the mark.

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