scholarly journals Development of Reconfigurable Antenna for Advanced Tracking Technology

2018 ◽  
Vol 10 (2) ◽  
pp. 672
Author(s):  
N. M. Sahar ◽  
M. T. Islam ◽  
N. Misran ◽  
M. R. Zaman
Keyword(s):  
Design Methodology ◽  
Rf Mems ◽  
Impedance Matching ◽  
Dual Band ◽  
Antenna Measurement ◽  
Rf Switches ◽  
Measurement Results ◽  
Tracking Technology ◽  
Rfid Applications ◽  
Compact Planar

<p>This paper focuses on the design and fabrication of reconfigurable multiband antenna for RFID and GPS as an advance tracking technology for various applications that achieve a physically compact, planar profile and sufficient bandwidth. The antenna can be reconfigured as single band at 1.275 GHz for GPS applications when the switches are OFF state and dual-band frequencies at 0.915 GHz and 2.4 GHz required in RFID applications when the switches are ON state. The performance of the antenna involves changing the switches to ON or OFF mode by controlling RF switches. RF MEMs RMSW101, Single Pole Single Throw (SPST) switches have been chosen due to the satisfactory RF properties includes low insertion loss, good impedance matching and high isolation. The gain for single and dual band is greater than 2dBi. The design methodology and antenna measurement results are both presented and discussed in this letter.</p>

scholarly journals Design of dualband antenna for RFID applications

2019 ◽  
Vol 9 (4) ◽  
pp. 3146
Author(s):  
N. M. Sahar ◽  
M.T. Islam ◽  
N. Misran
Keyword(s):  
Reflection Coefficient ◽  
Design Methodology ◽  
Low Cost ◽  
Dual Band ◽  
Total Efficiency ◽  
Uhf Rfid ◽  
Antenna Measurement ◽  
Dual Band Antenna ◽  
Measurement Results ◽  
Rfid Applications

<p>This paper focuses on the design and fabrication of dual band antenna for UHF RFID and ISM RFID applications. The U-shaped patch loaded with dipole is introduced and investigated. The antenna can be performed dual-band frequencies at 0.915 GHz and 2.4 GHz required in RFID applications with reflection coefficient is less than -10 dB. The lower band can be varied by adjusting both dipole arms length and upper band is tuned by U-shaped patches. The gains of the design with a size 130   45  1.6 mm3  are performed 1.89 dB and 3.65 dB for single and dual band respectively. This compact and low cost dual band antenna also performed total efficiency greater than 80%. The design methodology and antenna measurement results are both presented and discussed in this letter.</p>

Dual-band linearly and circularly polarized microstrip patch antennas with meandering slot and metallic vias

2015 ◽  
Vol 9 (2) ◽  
pp. 341-348 ◽  
Author(s):  
Jin Zhang ◽  
Xianqi Lin ◽  
Jiawei Yu ◽  
Liying Nie
Keyword(s):  
Linear Polarization ◽  
Impedance Matching ◽  
Single Band ◽  
Dual Band ◽  
Patch Antennas ◽  
Circularly Polarized ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Measurement Results ◽  
Simulation Results

Patch antennas with a meandering slot and different distributions of grounded metallic vias are presented in this paper. The meandering slot is adopted to stimulate dual-band operation, while the number and position of the grounded metallic vias are suggested to achieve different radiation performances. The characteristics are analyzed in detail where we find that the existence of the vias also improves the impedance matching. Four samples are designed, where dual-band with both linear polarization, dual-band with circular- and linear-polarization, and single band with linear polarization are obtained, respectively. The samples are finally fabricated and the measurement results agree well with the simulation results.

scholarly journals A Doherty Power Amplifier with Large Back-Off Power Range Using Integrated Enhancing Reactance

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Wa Kong ◽  
Jing Xia ◽  
Fan Meng ◽  
Chao Yu ◽  
Lixia Yang ◽  
...  
Keyword(s):  
Low Power ◽  
Power Amplifier ◽  
Impedance Matching ◽  
Dual Band ◽  
Matching Networks ◽  
Measurement Results ◽  
Linearity Improvement ◽  
Saturated Output Power ◽  
Doherty Power Amplifier ◽  
Power Region

A symmetric Doherty power amplifier (DPA) based on integrated enhancing reactance (IER) was proposed for large back-off applications. The IER was generated using the peaking amplifier with the help of a desired impedance transformation in the low-power region to enhance the back-off efficiency of the carrier amplifier. To convert the impedances properly, both in the low-power region and at saturation, a two-impedance matching method was employed to design the output matching networks. For verification, a symmetric DPA with large back-off power range over 2.2–2.5 GHz was designed and fabricated. Measurement results show that the designed DPA has the 9 dB back-off efficiency of higher than 45%, while the saturated output power is higher than 44 dBm over the whole operation bandwidth. When driven by a 20 MHz LTE signal, the DPA can achieve good average efficiency of around 50% with adjacent channel leakage ratio of about –50 dBc after linearization over the frequency band of interest. The linearity improvement of the DPA for multistandard wireless communication system was also verified with a dual-band modulated signal.

scholarly journals Design, Realization and Measurements of Compact Dual-band CPW-fed Patch Antenna for 2.45/5.80 GHz RFID Applications

2018 ◽  
Vol 8 (1) ◽  
pp. 172
Author(s):  
Mohamed Tarbouch ◽  
Abdelkebir El Amri ◽  
Hanae Terchoune
Keyword(s):  
Patch Antenna ◽  
Simulation Analysis ◽  
Impedance Matching ◽  
Design Procedure ◽  
Dual Band ◽  
Method Of Moment ◽  
Radiating Element ◽  
Miniaturized Antenna ◽  
Rfid Applications ◽  
Good Agreement

In this paper, a Coplanar Wave Guide (CPW)-Fed microstrip octagonal patch antenna for RFID Applications is proposed. The studied structure is suitable for 2.45/5.80 GHz applications. The octagonal shape is obtained by making triangular cuts in the four angles of the rectangular microstrip patch antenna; in addition the using of CPW-Fed allows obtaining UWB characteristics in the higher band. The miniaturization in the antenna size for lower band is achieved by introducing an inverted E slot in the radiating element. The proposed antenna is designed on a single and a small substrate board of dimensions 29.5×29.5×1.6 mm3. Moreover the miniaturized antenna has a good impedance matching and an enhanced gain. The simulation analysis was performed using the CADFEKO software, a Method of Moment (MoM) based solver, and a prototype of this antenna was fabricated, good agreement with the simulation providing validation of the design procedure. The measurements are done with ANRITSU MS2026C Vectorial Network Analyzer.

RF-MEMS Components and Networks for High-Performance Reconfigurable Telecommunication and Wireless Systems

2012 ◽  
Vol 81 ◽  
pp. 65-74 ◽  
Author(s):  
Jacopo Iannacci ◽  
Giuseppe Resta ◽  
Paola Farinelli ◽  
Roberto Sorrentino
Keyword(s):  
High Performance ◽  
Microelectromechanical Systems ◽  
Rf Mems ◽  
Low Cost ◽  
Impedance Matching ◽  
Phase Shifters ◽  
Rf Systems ◽  
Mems Technology ◽  
And Performance ◽  
Rf Performance

MEMS (MicroElectroMechanical-Systems) technology applied to the field of Radio Frequency systems (i.e. RF-MEMS) has emerged in the last 10-15 years as a valuable and viable solution to manufacture low-cost and very high-performance passive components, like variable capacitors, inductors and micro-relays, as well as complex networks, like tunable filters, reconfigurable impedance matching networks and phase shifters, and so on. The availability of such components and their integration within RF systems (e.g. radio transceivers, radars, satellites, etc.) enables boosting the characteristics and performance of telecommunication systems, addressing for instance a significant increase of their reconfigurability. The benefits resulting from the employment of RF-MEMS technology are paramount, being some of them the reduction of hardware redundancy and power consumption, along with the operability of the same RF system according to multiple standards. After framing more in detail the whole context of RF MEMS technology, this paper will provide a brief introduction on a typical RF-MEMS technology platform. Subsequently, some relevant examples of lumped RF MEMS passive elements and complex reconfigurable networks will be reported along with their measured RF performance and 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.

Compact dual band slotted triangular monopole antenna for RFID applications

2018 ◽  
Vol 60 (2) ◽  
pp. 432-436 ◽  
Author(s):  
M. Dehmas ◽  
A. Azrar ◽  
F Mouhouche ◽  
K. Djafri ◽  
M. Challal
Keyword(s):  
Monopole Antenna ◽  
Dual Band ◽  
Rfid Applications
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