Dual-band mobile phone antenna for RF protection of human head

Przesmycki, Rafał; Bugaj, Marek; Nowosielski, Leszek; Wnuk, Marian

doi:10.1109/imoc.2011.6169256

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…The antennas should be in compact sizes and able to conform to diverse standards and requirements [2][3][4]. As these antennas are located in mobile terminals, various studies have been done previously that showed the performance of the antenna in mobile terminal are significantly affected by the presence of users, especially when the mobile antenna is being held by the users, close to their heads [5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Study of user effects on two-port MIMO antennas at 2.4 GHz and 5.8 GHz for Wi-Fi and WLAN applications

Rahman¹,

Al‐Hadi²,

Khan³

2019

Bulletin EEI

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In this paper, two multiple input multiple output (MIMO) antennas for Wi-Fi/WLAN mobile applications are proposed. The designed two-port MIMO antennas are made up of planar inverted-F antennas (PIFAs). The antenna elements for both designs are symmetrical and placed on the short-edged corners of the substrate used, FR4. The performance of both antennas in the presence of user’s hand is compared in terms of impedance bandwidth and efficiency. An upward shift of up to 0.17 GHz in impedance bandwidth was found for 2.4 GHz and 5.8 GHz antenna. Due to the smaller size of antennas at 5.8 GHz compared to antennas at 2.4 GHz, the antennas are less obstructed by hands and thus the exhibited total efficiency of up to 45.58 % in the presence of human hand. The designed antennas have been fabricated for validation purpose. It is shown that there is a good agreement between simulated and measured results.

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Section: Introductionmentioning

confidence: 99%

Study of user effects on two-port MIMO antennas at 2.4 GHz and 5.8 GHz for Wi-Fi and WLAN applications

Rahman¹,

Al‐Hadi²,

Khan³

2019

Bulletin EEI

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“…The fundamentals that the antenna should meet are radiation characteristic to ensure the consistency of communication, a wide bandwidth to discourage distortions of transmitted signals, minimal impact on users and minute sensitivity of the antenna parameters to the imminence of users and of course, it should be in small, compact size [1]. Specific Absorption Rate (SAR) is another significant criterion to mull over.…”

Section: Introductionmentioning

confidence: 99%

“…Various studies have been done previously that showed the performance of the antenna in mobile terminal are significantly affected by the presence of users, especially when the mobile antenna is being held by the users, close to their heads [1], [3]- [7]. It is produced feeble performance of mobile terminal; the output power and radiation efficiency are worsened by huge mismatch.…”

Section: Introductionmentioning

confidence: 99%

Impedance Analysis of Mobile Phone Antenna in the Presence of User's Hand

2017

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Abstract. User interaction (UI) has been identified to degrade the performance of the antenna. A system that measures impedance characteristics of a planar inverted-F antenna (PIFA) when there are user interactions is designed using Keysight VEE Pro. The operational frequencies of the antenna are 900 MHz and 1800 MHz at low band and high band, respectively. The obtained results are compared and then a new impedance matching circuit is proposed and designed by using ADS (Advanced Design System). The proposed matching circuit at each operating frequency is a basic lumped circuit using the L network. Both simulation and experimental work have been done.

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Analysis of non-ionized radiation level radiated from Base Trans-receiver Station at mobile communication system (GSM 1800 MHz)

Vaishali¹,

Kumar

2014

International Conference on Recent Advances and Innovations in Engineering (ICRAIE-2014)

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Dual-band mobile phone antenna for RF protection of human head

Cited by 3 publications

References 6 publications

Study of user effects on two-port MIMO antennas at 2.4 GHz and 5.8 GHz for Wi-Fi and WLAN applications

Study of user effects on two-port MIMO antennas at 2.4 GHz and 5.8 GHz for Wi-Fi and WLAN applications

Impedance Analysis of Mobile Phone Antenna in the Presence of User's Hand

Analysis of non-ionized radiation level radiated from Base Trans-receiver Station at mobile communication system (GSM 1800 MHz)

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