Improving Performance of Patch Antenna For IEEE 802.16e Applications Using Multi-layer Antenna Structure with Reflector

2018 ◽  
Author(s):  
Safa Nassr Nafea
Keyword(s):  
Patch Antenna ◽  
Ieee 802.16E ◽  
Antenna Structure

scholarly journals Design and Development of Filtering Antenna for S-Band Applications with High out-of-band Rejection

2019 ◽  
Vol 9 (1S) ◽  
pp. 180-187
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Equivalent Circuit Model ◽  
Design Procedure ◽  
Pass Band ◽  
Band Pass Filter ◽  
Coupled Resonators ◽  
Pass Filter ◽  
Antenna Structure ◽  
Band Pass

In this paper, the design, simulation and fabrication of a filtering antenna is proposed. The filtering antenna structure is, therefore, framed by integrating elements, such as the feed line, parallel coupled resonators and the microstrip patch antenna array. The combined elements are designed for third order Chebyshev band pass filter with a pass band ripple of 0.1 dB and the integrated structure is more suitable for different S-band (2 GHz – 4 GHz) wireless applications. The equivalent circuit model for the proposed filtering antenna structure is analysed and the design procedure of the filter is also presented in detail. The 1x2 rectangular patch antenna array acts both as a radiating element and also as the last resonator of the band pass filter. The proposed filtering antenna structure results in high out-of-band rejection, enhanced bandwidth and a gain of about 209 MHz and 1.53 dB. The fabricated result agrees well with the simulation characteristics

U-Patch Antenna for RFID and Wireless Applications

2011 ◽  
Vol 324 ◽  
pp. 434-436
Author(s):  
R. Abi Saad ◽  
Zeina Melhem ◽  
Chadi Nader ◽  
Youssef Zaatar ◽  
Doumit Zaouk
Keyword(s):  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Impedance Matching ◽  
Dual Band ◽  
Antenna Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Additional Layer ◽  
Quarter Wavelength ◽  
Frequency Identification

in this paper, we propose a new multi-band patch antenna structure for embedded RFID (Radio Frequency Identification) readers and wireless communications. The proposed antenna is a dual band microstrip patch antenna using U-slot geometry. The operating frequencies of the proposed antenna are chosen as 2.4 and 0.9 (GHz), obtained by optimizing the physical dimensions of the U-slot. Several parameters have been investigated using Ansoft Designer software. The antenna is fed through a quarter wavelength transformer for impedance matching. An additional layer of alumina is added above the surface of the conductors to increase the performance of the antenna.

scholarly journals Conformal and Disposable Antenna-Based Sensor for Non-Invasive Sweat Monitoring

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4088 ◽  
Author(s):  
Angie Eldamak ◽  
Elise Fear
Keyword(s):  
Dielectric Properties ◽  
Patch Antenna ◽  
Low Cost ◽  
Salt Solutions ◽  
Paper Substrate ◽  
Antenna Structure ◽  
Non Invasive ◽  
Nacl Concentration ◽  
Artificial Sweat ◽  
Cellulose Filter

This paper presents a feasibility study for a non-wearable, conformal, low cost, and disposable antenna-based sensor for non-invasive hydration monitoring using sweat. It is composed of a patch antenna implemented on a cellulose filter paper substrate and operating in the range 2–4 GHz. The paper substrate can absorb liquids, such as sweat on the skin, through two slots incorporated within the antenna structure. Thus, the substrate dielectric properties are altered according to the properties of the absorbed liquid. Changes in reflection-based measurements are used to analyze salt solutions and artificial sweat, specifically the amount of sampled solution and the sodium chloride (NaCl) concentration. Using the shift in resonant frequency and magnitude of the reflection coefficient, NaCl concentrations in the range of 8.5–200 mmol/L, representing different hydration states, are detected. The measurements demonstrate the feasibility of using microwave based measurements for hydration monitoring using sweat.

Reconfigurable leaky-mode/multifunction patch antenna structure

1999 ◽  
Vol 35 (2) ◽  
pp. 104 ◽  
Author(s):  
Y. Qian ◽  
B.C.C. Chang ◽  
M.F. Chang ◽  
T. Itoh
Keyword(s):  
Patch Antenna ◽  
Leaky Mode ◽  
Antenna Structure

scholarly journals Feasibility analysis of additive manufacturing method for Graphene nano-conductive ink based super solar body mounting printed patch antenna structures in cubesat and aerospace applications

2019 ◽  
Author(s):  
Prasanna Ram ◽  
Rachel Jeeva Light Rajakumaran ◽  
Rashika Chithoor Santharam ◽  
Jahnavi Nancheri ◽  
Monika Gayathri Ogirala
Keyword(s):  
Patch Antenna ◽  
Satellite System ◽  
Solar Panel ◽  
Printed Antennas ◽  
Optical Efficiency ◽  
Solar Module ◽  
Antenna Structure ◽  
Manufacturing Method ◽  
Aerospace Applications ◽  
Screen Printing Technique

In this project, a nano material based printed patch antenna structure has been integrated with a solar panel without affecting the optical efficiency of the solar panel. The proposed prototype is having the property of both antenna and solar module functionality. A Graphene based CPW fed E-Shaped microstrip patch antenna which has a return loss of -48.43dB at resonant frequency of 2.1GHz which is best suitable for UMTS-2100 Band (2.15GHz – 2.18GHz), GSM (2.15GHz – 2.18GHz) applications is printed on the solar panel using screen printing technique. In this project, conventional copper-based antennas are replaced with graphene-based antennas due to various advantages. In this experiment, the feasibility of material based body mounting antenna structure printing method is analyzed. This proposed design model is best suitable for satellites where antennas occupy one-third of the satellite’s size. By mounting the small printed antennas on the solar panel, the space complexity of the satellite system gets reduced by one-third of its initial dimensions.

scholarly journals Performance Improvement for Patch Antenna Over ISM band (5.725-5.875) GHz Using Multiple Superstrates

2018 ◽  
Vol 1 (1) ◽  
pp. 11-17
Author(s):  
Safa Nassr Nafea
Keyword(s):  
Performance Improvement ◽  
Patch Antenna ◽  
Return Loss ◽  
Simulation Environment ◽  
Antenna Structure ◽  
Ism Band ◽  
Dielectric Layers ◽  
Gain Variation ◽  
Operating Bandwidth ◽  
Overall Performance

           A multilayer antenna structure proposed to enhance the performance of patch antenna used for WLAN applications. The antenna composed of three layers of Rogers RO3010 located above a feeder patch  antenna. Adding superstrate (dielectric) layers above feeding patch improved the overall performance of antenna. An agreement between simulated and measured results was achieved in terms of return loss, gain, and operating bandwidth. The proposed antenna had achieved gain of 11.30 dB, Front-to-Back (F/B) ratio of 18 dB, and gain variation around 0.6 dB over the Scientific, Industrial, and Medical ISM band (5.725 - 5.875) GHz. The simulated and measured return loss, resonant frequency, gain and bandwidth for the proposed design are presented. Computer Simulation Technology (CST Microwave studio) was used as a simulation environment for this design.

scholarly journals Design and Fabrication of a Novel Quadruple-Band Monopole Antenna Using a U-DGS and Open-Loop-Ring Resonators

2017 ◽  
Vol 6 (3) ◽  
pp. 59 ◽  
Author(s):  
A. Boutejdar ◽  
M. Challal ◽  
S. D. Bennani ◽  
F. Mouhouche ◽  
K. Djafri
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Open Loop ◽  
Ring Resonators ◽  
Area Network ◽  
Defected Ground Structure ◽  
Total Size ◽  
Antenna Structure ◽  
Loop Ring

In this Article, a novel quadruple-band microstrip patch antenna is proposed for the systems operating at quad-band applications. The antenna structure is composed of modified rectangular patch antenna with a U-shaped defected ground structure (DGS) unit and two parasitic elements (open-loop-ring resonators) to serve as a coupling-bridge. The proposed antenna with a total size of 31×33 mm2 is fabricated and tested. The measured result indicates that the designed antenna has impedance bandwidths for 10 dB return loss reach about 180 MHz (4.4–4.58 GHz), 200 MHz (5.4–5.6 GHz), 1100 MHz (7.2–8.3 GHz), and 700 MHz (9.6–10.3 GHz), which meet the requirements of the wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), C and X bands applications. Good agreement is obtained between measurement and simulation results.

A Novel-Shaped Reduced Size FSS-Based Broadband High Gain Microstrip Patch Antenna for WiMAX/WLAN/ISM/X-Band Applications

2021 ◽  
pp. 2150290
Author(s):  
Kalyan Mondal
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
High Gain ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Antenna Structure ◽  
Microstrip Patch ◽  
Antenna Performance ◽  
Peak Gain

In this work, a broadband high gain frequency selective surface (FSS)-based microstrip patch antenna is proposed. The dimensions of the microstrip antenna and proposed FSS are [Formula: see text] and [Formula: see text]. A broadband high gain reference antenna has been selected to improve antenna performance. The reference antenna offers 1.2[Formula: see text]GHz bandwidth with 6.03[Formula: see text]dBi peak gain. Some modifications have been done on the patch and ground plane to enhance the bandwidth and gain. The impedance bandwidth of 7.70[Formula: see text]GHz (3.42–11.12[Formula: see text]GHz) with 4.9 dBi peak gain is achieved by the microstrip antenna without FSS. The antenna performance is improved by using FSS beneath the antenna structure. The maximum impedance bandwidth of 7.70[Formula: see text]GHz (3.32–11.02[Formula: see text]GHz) and peak gain of 8.6[Formula: see text]dBi are achieved by the proposed antenna with FSS. Maximum co- and cross-polarization differences are 21[Formula: see text]dB. The simulation and measurement have been done using Ansoft Designer software and vector network analyzer. The measured results are in good parity with the simulated one.

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