An Interaction Study Between Pifas Handset Antenna and a Human Hand-Head in Personal Communications

Montaser, Ahmed M.; Mahmoud, Korany R.; Elmikati, and Hamdy A.

doi:10.2528/pierb11091514

Cited by 21 publications

(15 citation statements)

References 34 publications

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“…The optimization algorithms programmed with MATLAB will generate antenna variables which will be sent to the CST simulator for calculating the fitness value of each individual [24]. Table 1 shows the decision space for each variable and the best obtained value to achieve our goals from PSO integrated with CST Microwave Studio package and those obtained from MPSO, BSO, and CFO algorithms.…”

Section: Antenna Design and Numerical Resultsmentioning

confidence: 99%

“…The antenna is analyzed completely using CST Microwave Studio which linked with MATLAB to optimize the antenna via Visual Basic for Applications (VBA) programs. Interchanging information between CST Microwave studio and Matlab allows the implementation of optimization algorithms not included in the Microwave studio environment itself [24]. To valid the results, the performance of the designed filter is assessed using the Finite Difference Time Domain (FDTD) program written with MATLAB.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design Bluetooth and Notched-Uwb E-Shape Antenna Using Optimization Techniques

Montaser¹,

Mahmoud²,

Abdel‐Rahman³

et al. 2013

PIER B

Self Cite

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In this article, an optimized E-shaped patch antenna for Bluetooth (2.4-2.484 GHz) and UWB (3.1-10.6 GHz) applications with WLAN (5.15-5.825 GHz) band-notched characteristics is proposed. The dimensions of the E-shaped antenna structure in addition to the position of the slotted C-shape in the ground plane are optimized using recent optimization techniques such as Modified Particle Swarm Optimization (MPSO), Bacterial Swarm Optimization (BSO), and Central Force Optimization (CFO). The optimization algorithms were implemented using MATLAB-software and linked to the CST Microwave Studio to simulate the antenna. Next, the effects of the Laptop structure on the antenna radiation characteristics are considered. Finally, the antenna structures are simulated by the finite difference time domain method (FDTD) to validate the results. The measured results exhibit good agreement with the simulation from CST and the Finite Difference Time Domain (FDTD) program written with matlab.

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Section: Antenna Design and Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design Bluetooth and Notched-Uwb E-Shape Antenna Using Optimization Techniques

Montaser¹,

Mahmoud²,

Abdel‐Rahman³

et al. 2013

PIER B

Self Cite

View full text Add to dashboard Cite

show abstract

“…The approach developed here is very flexible and utilizes the inherent capability of Microwave studio to execute Visual Basic for Applications (VBA) programs. The general idea of this method is that Matlab and Microwave studio can interchange information using external text files, which can be read and written by both programs [16].…”

Section: A Hybrid Cfo-hc Algorithmmentioning

confidence: 99%

Design a novel bandpass filter with microstrip resonator loaded capacitors using CFO-HC algorithm

Abdel‐Rahman

Montaser

El-Mikati

2012

The 2nd Middle East Conference on Antennas and Propagation

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This paper introduces a new way to reduce the length of a microstrip end-coupled resonator by loading its ends by a lumped capacitors. A new way of controlling the frequency of the 2nd harmonic even mode by loading the center of the resonator by a lumped capacitor directly or through less than 0.125 λ go part of a microstrip transmission line. Compact dual and triple modes bandpass filters with good selectivity are obtained. The length of transmission line section controls the phase and transforms the impedance of the capacitor which controls the bandwidth and generates transmission zeros. The transmission zeros can be located at upper or lower side of the passband by adjusting the loading capacitor values or the length of the transmission line. A second order bandpass filter with center frequency of 4 GHz is designed, fabricated and measured. The filter has a passband from 3.6 GHz to 4.4 GHz with a transmission zero at 4.8 GHz. The filter has good stopband performance with a rejection higher than 20 dB up to more than 10 GHz. Insertion loss of less than 0.75 is achieved within the passband. The measured results exhibit good agreement with the simulation one. An efficient global hybrid optimization method is proposed combining the Central Force Optimization (CFO) as a global optimizer and Hillclimbing (HC) algorithm as a local optimizer. After the final global iteration, a local optimization can be followed to further improve the solution obtained from the CFO. The hybrid Central Force Optimization and Hillclimbing (CFO-HC) algorithm is used to optimize the dimensions and values of the capacitance which contact them the filter, the (CFO-HC) algorithm was implemented using MATLAB-software and linked to the CST simulator to simulate the filter, In addition the optimized filter is simulated by the Finite Difference Time Domain (FDTD) program written with matlab to validate the results.

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“…In this case, the resulting return loss is optimized by the CFO algorithm with 16 probe size and 80 time steps. The optimization algorithms programmed with MATLAB will generate antenna variables which will be sent to the CST simulator for calculating the fitness value of each individual [18][19][20], Table 1 shows the decision space for each variable and the best obtained value to achieve our goals using DTO optimization. The optimized proposed antenna is simulated, fabricated and measured.…”

Section: Antenna Configurationmentioning

confidence: 99%

Reconfigurable Antenna for Rfid Reader and Notched Uwb Applications Using Dto Algorithm

Montaser¹

2014

PIER C

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Abstract-In this article, the approach involving Dynamic Threshold Optimization (DTO) algorithm is considered to optimize a new compact reconfigurable antenna to be applied to triple band Radio Frequency Identification (RFID) and to ultra wideband (UWB) antenna with multiple bands notched. The antenna is implemented by using the existing techniques, such as loading an L-type band-stop filter, inserting a split ring resonator (SRR) as well as connecting L branches to the radiation disk proposed by us. In case of RFID applications, triple-band RFID 915/2450/5800 MHz are achieved separately. The results prove that this kind of antenna can be applied in RFID reader to avoid interference with other wireless systems. RF MEMS switches are used to reconfigure the antenna to be suitable for the application in the notched UWB communication systems. The DTO algorithm program is implemented using MATLAB-software and linked to the CST Microwave studio software to simulate the antenna. In addition, the optimized antenna is assessed using the Finite Difference Time Domain (FDTD) program written with MATLAB to validate the results. The experimental results for the RFID and UWB antennas show good agreement with simulated ones. The radiation patterns are satisfactorily omnidirectional across the antenna's operation bands.

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An Interaction Study Between Pifas Handset Antenna and a Human Hand-Head in Personal Communications

Cited by 21 publications

References 34 publications

Design Bluetooth and Notched-Uwb E-Shape Antenna Using Optimization Techniques

Design Bluetooth and Notched-Uwb E-Shape Antenna Using Optimization Techniques

Design a novel bandpass filter with microstrip resonator loaded capacitors using CFO-HC algorithm

Reconfigurable Antenna for Rfid Reader and Notched Uwb Applications Using Dto Algorithm

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