Characteristics of a planar metal antenna in vicinity of human head at 900 MHz and 1800 MHz

Mondal, Santanu; Sarkar, Partha Pratim

doi:10.1109/c3it.2015.7060205

Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT) 2015

DOI: 10.1109/c3it.2015.7060205

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Characteristics of a planar metal antenna in vicinity of human head at 900 MHz and 1800 MHz

Santanu Mondal

Partha Pratim Sarkar

Abstract: In this paper a parametric study on characteristics of a planar metal antenna in vicinity of a homogenous human head at 900 MHz and 1800 MHz are carried out. Initially the planar metal antenna is designed at 900 MHz and 1800 MHz. The impedance and radiation characteristics of these antennas are shown in free space and in proximity of a human head. Also Specific Absorption Rate (SAR) for different distances of the antenna from head are evaluated and compared.

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2016

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Design of a shorted planar meander-line metal antenna

Mondal

Mandal

Sarkar

2016

2016 International Conference on Microelectronics, Computing and Communications (MicroCom)

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For the optimal results obtained in this study, the impedance bandwidth (À10 dB reflection coefficient) can reach up to 3 GHz for the proposed antenna. The operating bandwidths with usable broadside radiation patterns are still Omni. Measurements show that the structure indeed offers good bandwidth and gain characteristics. ACKNOWLEDGMENTThis work was supported by the Information Technology Industry Development Agency, (ITIDA-ITAC), ministry of communication, Egypt. ABSTRACT: This article presents a systematic design method for ultra broadband power amplifiers using an optimized feedback network. Based on the analysis using the network parameters for the open-loop circuit and feedback network, a design and optimization procedure was established. To make the gain response as flat as possible throughout the broad operating frequency band, the optimized component values of the feedback network were found using an optimization program which was built based on the least-mean-square-error algorithm in MATLAB. Single-ended broadband power amplifiers were implemented to verify the optimization results for various target gains, as well as source and load impedance sets. One of the single-ended amplifiers was selected for use as part of the push-pull power amplifier which includes broad-band 1:1 transmission line transformers. For the operational bandwidth from 8 to 800 MHz, the ultra broad-band push-pull power amplifier exhibited a flat gain response of 60.331 dB from 17.2 dB, a P 1dB of more than 40.5 dBm, and high PAE from 26.7 to 45 % at each P 1dB point.

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Design of a shorted planar meander-line metal antenna

Mondal

Mandal

Sarkar

2016

2016 International Conference on Microelectronics, Computing and Communications (MicroCom)

View full text Add to dashboard Cite

show abstract

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Characteristics of a planar metal antenna in vicinity of human head at 900 MHz and 1800 MHz

Cited by 1 publication

References 11 publications

Design of a shorted planar meander-line metal antenna

Design of a shorted planar meander-line metal antenna

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