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In this paper, a novel capacitive coupled patch antenna array capable of providing 360° coverage is proposed. The design and performance of the antenna element is discussed. The proposed antenna design is positioned in the mobile phone chassis as a set of 4 sub-arrays each with 12 antenna elements to provide high gain around 27 dBi with each sub-array providing 90° coverage. The antenna array covers...
In this paper, a novel reconfigurable open slot antenna has been proposed for LTE smartphone applications to cover a wide bandwidth of 698–960 and 1710–2690 MHz. The antenna is located at the bottom portion of the mobile phone and is integrated with metal rim, thereby occupying a small space and providing mechanical stability to the mobile phone. Varactor diode is used to cover the lower band frequencies,...
Applying the health technology to the elder people in the early stage is helpful to delay the aging process. This research studies how proactive incentive and passive surveillance to and increase the quality of elderly healthcare. The four-stage questionnaire survey lasting for two years were designed and analyzed 140 hardware and software solutions for the commercialized products to establish the...
In this paper, a phased array antenna is designed at millimeter-wave frequency bands for future 5G based smartphone applications. The proposed antenna is a novel open slot-PIFA antenna made on a low cost FR4 board. The antenna array covers a frequency range of 26–32 GHz with a bandwidth of 6 GHz. The antenna exhibits a very good radiation pattern when integrated with the mobile phone chassis. The...
For mobile devices, motion estimation has been the most time-consuming part of video compression. Many fast motion vector block matching algorithms are proposed to decrease time complexity. In our paper, a new algorithm called Predictive Root Pattern Search (PRPS) is proposed. Experimental results show that the image quality of the proposed method is better than that of other block matching methods,...
This paper presents a new two-element multiple input multiple output (MIMO) antenna for LTE application using an unbroken metallic rim as the primary antenna and a non- resonant capacitive coupling element (CCE) as a diversity antenna. The primary antenna covers 698–960 MHz and 1710–2690 MHz and the diversity antenna cover 1710–2690 MHz Average efficiencies above 70% and 50% have been achieved by...
Many research results on biological effects of cellular phone radiations agree that the main possible hazards are the thermal effects while some other results reveal that the thermal effects due to handsets radiation are negligible. Few can deny the fact and puzzle that some users did suffer from such symptoms as headaches due to cellular phones. This paper provides a potential cause or possible answer...
One of the most important information in outdoor emergency rescue is the location of the trapped people. The more quickly and precisely the location can be determined, the more chance the victims can be saved. In this paper, an instantly deployable localization system is proposed, which takes the mobile phone carried by the trapped people as the localization carrier, and consists of several Portable...
This paper proposes compact novel multi-band solid inverted-F antenna (SIFA) for mobile telephone applications. Generally the planar inverted-F antenna (PIFA) is often made an internal element by using metal conductor sheet. The studied antenna configuration is different to general PIFA. Usually single-core wire is used to construct internal radiator of which the impedance bandwidth is often constricted...
This paper proposes a new antenna technique for pliant monopole antenna (PMA) as a radiator. This branch meander lines PMA based on two asymmetric meander lines with flexible structure exhibits good performances. Branch lines PMA radiator has the merits to improve antenna bandwidth with fine frequency tuning. The design bandwidth full cover 820 MHz~960 MHz and 1700~1990 MHz The PDA phone for GSM,...
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