A Novel Design on Compact Slot Antenna with Multi-Band for WiMAX/WLAN Applications

2014 ◽  
Vol 644-650 ◽  
pp. 4455-4458 ◽  
Author(s):  
Li Zhu ◽  
Xiang Jun Gao ◽  
Long Zheng
Keyword(s):  
Relative Permittivity ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Experimental Results ◽  
Slot Antenna ◽  
Radiation Patterns ◽  
Triple Frequency ◽  
Novel Design ◽  
Multi Band

In this paper, a novel coplanar waveguide (CPW)-fed and miniaturized slot antenna for triple-frequency operation is proposed and investigated, which is printed on a small 20mm×20mm FR4 substrate with thickness of 1.0 mm and relative permittivity of 4.3. Through loading different slits, three perfect operating bands of 2.4GHz-2.45GHz, 3.25GHz-4.15GHz and 5.05GHz-6.25GHz are achieved respectively, when return loss is less than-10dB. Experimental results show that the antenna gives monopole-like radiation patterns and good antenna gains over the operating bands. Such antennas is suitable for WLAN 2.4/5.2/5.8 GHz and WiMAX 3.5/5.5 GHz applications.

Frequency Reconfigurable Hybrid Slot Antenna Using PIN Diodes

Frequenz ◽  
2015 ◽  
Vol 69 (11-12) ◽  
Author(s):  
Xiaolin Yang ◽  
Lili Sheng ◽  
Jiancheng Lin ◽  
Gang Chen
Keyword(s):  
Return Loss ◽  
Coplanar Waveguide ◽  
Wireless Systems ◽  
Slot Antenna ◽  
Loss Peak ◽  
Radiation Patterns ◽  
Pin Diodes ◽  
Frequency Bands ◽  
Peak Gain ◽  
Bias Network

AbstractThis paper introduces a frequency reconfigurable hybrid slot antenna fed by coplanar waveguide (CPW) without complex bias network and DC blocking capacitor chips. In order to add reconfigurablility to the antenna, the PIN diodes are equipped in the slots. The antenna is capable of frequency switching at six different frequency bands between 1.7 GHz to 2.5 GHz, which can be used in multiradio wireless systems, such as DCS-1800, PCS1900, UMTS, Wibro and Bluetooth bands. The simulated and measured return loss, peak gain, together with the radiation patterns are presented and compared. Especially, the radiation patterns are stable at different frequency.

scholarly journals A Novel Compact Microstrip UWB Rectangular Stair Slot Antenna for the Analysis of Return Losses

2019 ◽  
Vol 8 (10) ◽  
pp. 4597-4603 ◽  
Keyword(s):  
Return Loss ◽  
Wide Band ◽  
Directional Pattern ◽  
Slot Antenna ◽  
Ultra Wide Band ◽  
Radiation Patterns ◽  
Uwb Antenna ◽  
Antenna Performance ◽  
Ansoft Hfss ◽  
Radiation Behavior

This article deals with the various designs of a novel compact microstrip fed UWB antenna to investigate the corresponding return losses of different structures. The dimension of the designed antenna is 33 x 19 x 1.9 mm3 with FR4 substrate and it can be operated from 2.846 - 11.7458 GHz. The effects of varying the structure of antenna are to exhibit the investigation of corresponding return losses. Different structures of antenna are simulated in Ansoft HFSS simulator. The results of return losses and radiation patterns are explored with the ultra wide band (UWB) rectangular Stair slot antenna. The modified structure of antenna shows the minimized return loss with an enhanced bandwidth that satisfies good UWB characteristics. Antenna performance can also be explored from the radiation behavior of the antenna which is relatively omni-directional pattern for rectangular Stair slot antenna

MULTIBAND CPW-FED SLOT ANTENNA FOR WLAN/WIMAX APPLICATIONS

2015 ◽  
Vol 77 (10) ◽  
Author(s):  
Igbafe Orikumhi ◽  
Mohamad Rijal Hamid ◽  
Ali Nyangwarimam Obadiah
Keyword(s):  
Radiation Pattern ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Slot Antenna ◽  
Frequency Range ◽  
Resonant Frequencies ◽  
Good Agreement

A square slot antenna fed by a coplanar waveguide (CPW) is presented in this paper. The design consist of two pairs of “F” shaped planar strips placed within a square slotted ground. The strips are used to excite multiple resonant frequencies, the strips are connected to the ground plane by means of ideal switches. The proposed antenna has achieved multiple resonant frequencies of 2.4/5.2/5.8 GHz for WLAN and 3.5/5.5 for WiMAX applications. The measured results shows a good agreement with the simulated results in terms of return loss, radiation pattern and gain. The proposed antenna is designed for the frequency range of 2 GHz to 7 GHz which makes it suitable for Bluetooth, WLAN and WiMAX applications. 

Compact transition from CBCPW to substrate integrated suspended line (SISL) for operation up to 46 GHz

2019 ◽  
Vol 12 (2) ◽  
pp. 116-119
Author(s):  
F. Parment ◽  
A. Ghiotto ◽  
T.-P. Vuong ◽  
L. Carpentier ◽  
K. Wu
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Experimental Results ◽  
Frequency Range ◽  
Better Than

AbstractA compact transition between conductor-backed coplanar waveguide (CBCPW) and substrate integrated suspended line (SISL) is presented. Compared to the reported transitions from CBCPW to SISL, performance and compactness are improved. For demonstration purpose, a multilayer transition is designed and fabricated for operation up to 46 GHz. Experimental results, based on an electronic calibration and thru–reflect–line calibration allowing measurement in the 0.01–50 GHz frequency range, demonstrate an insertion loss of 0.59 ± 0.51 dB with a return loss of better than 10 dB in the 10 MHz to 46 GHz frequency range.

scholarly journals Simple Mail Box Design of Dual Band Microstrip Patch Antenna for Wireless LAN Communications

2018 ◽  
Vol 7 (4) ◽  
pp. 587-592
Author(s):  
K. Thana Pakkiam ◽  
K. Baskaran ◽  
J. S. Mandeep
Keyword(s):  
Patch Antenna ◽  
Relative Permittivity ◽  
Wireless Lan ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Antenna Gain ◽  
Radiation Patterns ◽  
Feed Line ◽  
Microstrip Patch

In this paper, a simple mail box design of a dual band microstrip patch antenna, is proposed, designed, fabricated and measured for wireless LAN communications. The proposed antenna is designed using the TLC 30 (TACONIC) substrate, with a relative permittivity of 4.3 and substrate height of 1.6mm. It is designed to operate at 2.44 GHz and 5. 30 GHz respectively. The proposed antenna is the size of 31mm x 34mm x1.6mm and is incited by a 50 Ω micro strip feed line. The characteristics of the antenna are designed and the performance of the modelled antenna is evaluated using CST Microwave Studio. The return loss, radiation patterns and peak antenna gain of 6.5 dBi for frequency 2.44 GHz and 6.2 dBi for 5.30 GHz is separately and successfully plotted. The fabricated prototype exhibits an agreement between the measured and simulated return loss.

scholarly journals Multiple Bandwidth Design of Micro strip Antenna for Future Wireless Communication

2019 ◽  
Vol 8 (2) ◽  
pp. 5135-5138 ◽  
Keyword(s):  
Wireless Communication ◽  
Frequency Band ◽  
Return Loss ◽  
Experimental Results ◽  
Proper Selection ◽  
Maximum Gain ◽  
Different Characteristics ◽  
Selection Of ◽  
Multi Band

We have presented a design of multi-band micro strip antenna which is suitable for operating at a higher frequency and with moderate bandwidth also. Proper selection of dimension, patch, and position of feed is taken into consideration to achieve the target properties of the antenna. Different characteristics of antenna like return loss, VSWR, gain, directivity, and efficiency are verified for different frequencies. The maximum gain of the antenna is found to be more than 3dB at different frequencies and also achieves multiple bandwidths in the direction of max radiation. The proposed structure of the antenna is fabricated, simulated, and tested for obtaining the preferred performance in terms of S11, VSWR, gain and efficiency. The experimental results are verified with simulated results which are in good in accord. Proposed antenna bandwidth is found to be 200MHz to 700 MHz with frequency band from 5.70 GHz to 12.60 GHz.

scholarly journals A Novel Dual-Band Circularly Polarized Rectangular Slot Antenna

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Biao Li ◽  
Yang Ding ◽  
Ying-Zeng Yin
Keyword(s):  
Return Loss ◽  
Coplanar Waveguide ◽  
Surface Current ◽  
Axial Ratio ◽  
Dual Band ◽  
Slot Antenna ◽  
Surface Current Density ◽  
Circularly Polarized ◽  
Rectangular Slot ◽  
Metal Frame

A coplanar waveguide fed dual-band circularly polarized rectangular slot antenna is presented. The proposed antenna consists of a rectangular metal frame acting as a ground and an S-shaped monopole as a radiator. The spatial distribution of the surface current density is employed to demonstrate that the circular polarization is generated by the S-shaped monopole which controls the path of the surface currents. An antenna prototype, having overall dimension 37 × 37 × 1 mm3, has been fabricated on FR4 substrate with dielectric constant 4.4. The proposed antenna achieves 10 dB return loss bandwidths and 3 dB axial ratio (AR) in the frequency bands 2.39–2.81 GHz and 5.42–5.92 GHz, respectively. Both these characteristics are suitable for WLAN and WiMAX applications.

Modified CPW-fed rotated E-slot antenna for LTE/WiMAX applications

2014 ◽  
Vol 7 (5) ◽  
pp. 535-542 ◽  
Author(s):  
Geetanjali Singla ◽  
Rajesh Khanna
Keyword(s):  
Return Loss ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Ground Plane ◽  
Slot Antenna ◽  
Rectangular Patch ◽  
Resonant Modes

In this paper, a rotated E-slot antenna with modified coplanar waveguide (CPW) feeding is presented to obtain broadband characteristics. The antenna comprises of a planar rectangular patch element embedded with E-slot rotated 90° anticlockwise on the radiating side. The CPW feed is modified by extending the ground plane throughout the substrate to surround the rectangular patch. This structure is capable of generating three separate resonant modes with good impedance matching. The antenna is designed on an FR4 substrate of 1.6 mm thickness, covering bands from 3.4 to 3.6 GHz for LTE and 3.4–3.694 GHz for worldwide interoperability for microwave access (WiMAX) systems. The proposed antenna provides good return loss S11and impedance behavior.

scholarly journals Miniaturization of UWB Antennas on Organic Material

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Symeon Nikolaou ◽  
Muhammad Ali Babar Abbasi
Keyword(s):  
Liquid Crystal ◽  
Organic Material ◽  
Return Loss ◽  
Liquid Crystal Polymer ◽  
Slot Antenna ◽  
Radiation Patterns ◽  
Frequency Range ◽  
Uwb Antennas ◽  
The Third ◽  
Crystal Polymer

Three planar, CPW-fed, UWB antennas with increasingly reduced size are presented and the miniaturization method is discussed. The first antenna is a CPW-fed elliptical slot with an uneven U-shaped tuning stub, the second antenna is a cactus shaped monopole, and the third one is a miniaturized version of the cactus shaped monopole antenna. All presented antennas have a simulated and measured return loss below −10 dB over the 3.1 to 10.6 GHz UWB frequency range and mostly omnidirectional radiation patterns. The proposed antennas are fabricated on liquid crystal polymer (LCP). The CPW-fed slot antenna requires an overall board dimension of 38 mm × 40 mm, and the evolved cactus monopole is confined in a 28 mm × 32 mm board, while the final miniaturized cactus monopole is printed on 28 mm × 20 mm board, resulting in a 41% and 63% size reduction, respectively. Using both simulations and measurements, the paper analyzes the response of all three antennas and discusses and demonstrates the effectiveness of the implemented miniaturization method.

scholarly journals A Small Planar Antenna for 4G Mobile Phone Application

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Hu Jian-rong ◽  
Li Jiu-sheng ◽  
Wu Di
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Return Loss ◽  
Experimental Results ◽  
Impedance Bandwidth ◽  
Planar Antenna ◽  
Radiation Patterns ◽  
Mobile Phone Application ◽  
Analysis And Design ◽  
Internal Antenna

The analysis and design of a small planar multiband antenna operating in the 4G frequency bands are presented. The numerical and experimental results demonstrated that the proposed antenna satisfies the requirement of 6 dB return loss for the impedance bandwidth of the LTE700/LTE2300/LTE2500 and WiMAX3500 bands. The gains at 750 MHz/2.3 GHz/2.6 GHz/3.5 GHz are 2.1 dBi/4.9 dBi/4.7 dBi/4.3 dBi, respectively. The measured radiation patterns verify the suitability of the antenna to be employed in mobile phones. The dimensions of the radiant patch are 49 × 10 mm2. The proposed antenna can be easily fabricated and customized to various 4G mobile phones as a compact internal antenna.

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