Multi-band hybrid antenna for ultra-thin mobile phone applications

Rhyu, Hanphil; Byun, Joonho; Harackiewicz, Frances J.; Park, M.-J.; Jung, K.B.; Kim, D.; Kim, N.; Kim, T.; Lee, B.

doi:10.1049/el.2009.1530

Cited by 29 publications

(26 citation statements)

References 4 publications

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“…Accordingly, many internal antennas have been studied for generating a wide operating bandwidth. The performances of previously reported antennas and proposed antenna are summarised in Table 1 [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. To maintain their radiation performance, mobile handset antennas require electrical isolation from metal objects such as ground plane.…”

Section: Introductionmentioning

confidence: 99%

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Reconfigurable PIFA with a parasitic strip line for a hepta‐band WWAN/LTE mobile handset

Lee

Sung

2015

IET Microwaves, Antennas & Propagation

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In this study, a reconfigurable planar inverted-F antenna (PIFA) with a parasitic strip line for a hepta-band wireless wide area network (WWAN)/long term evolution (LTE) mobile handset is proposed. The PIN diode is located between the end of the parasitic strip line and the protruded ground plane. Depending on the on/off-state of the PIN diode, the degree of coupling between the conventional PIFA and the parasitic line is controlled and the fundamental resonant frequency of the proposed antenna is adjusted. As a result, the fundamental resonant frequencies cover the (global system for mobile communication) GSM850 (824-894 MHz) and GSM900 (880-960 MHz) bands. By the parasitic strip line extended from the protruded ground plane, impedance matching at the higher-order modes ( f 2 and f 3 ) is improved and the fourth resonant frequency f 4 is remarkably decreased. The high band of the antenna is formed by combining these three higher-order modes

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Section: Introductionmentioning

confidence: 99%

“…To maintain their radiation performance, mobile handset antennas require electrical isolation from metal objects such as ground plane. Thus, internal antennas generally have a great height [1][2][3][4][5][6] or ground clearance [7][8][9][10][11]. However, tall structures are not very promising for the thin mobile handset applications.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable PIFA with a parasitic strip line for a hepta‐band WWAN/LTE mobile handset

Lee

Sung

2015

IET Microwaves, Antennas & Propagation

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“…Most such designs feature a loop, slot, or an open slit antenna that utilizes the metal enclosure as a radiator component. In order to enhance device embedding, Lin et al [8][9][10] and [11] investigated hybrid designs combined with slot antennas and PCB embedded planar antennas, although the resulting antennas are too large to fit into mobile phones unless the layout of nearby components such as the speaker, microphone, vibrator, and micro-USB is properly considered. In this study, we present a novel slot antenna design in which a monopole feed line is embedded into the metal ground plane or the LCD bracket.…”

Section: Introductionmentioning

confidence: 99%

Embedded Antenna for Metallic Handheld Communication Devices

Eom¹,

Kim²,

Ali³

et al. 2014

PIER B

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Abstract-In this study, a quad-band folded slot antenna with a monopole feed line embedded in a conductive housing structure (the LCD bracket of a mobile phone) is proposed. The performance of the proposed antenna is evaluated through simulation and measurement, demonstrating that it can provide total radiation efficiencies of more than 40% in the EGSM900, DCS, PCS, and WCDMA1 bands. Over these four bands, the total radiated power (TRP) of a prototype mobile phone using the antenna is 28.5, 27.1, 27.5, and 21 dBm, respectively, while the total isotropic sensitivity (TIS) is 102.7, 104.3, 103.8, and 107.3 dBm, respectively; all of these values satisfy Cellular Telecommunication and Internet Association (CTIA) requirements for over-the-area-(OTA) testing standards. The radiation performance of the proposed antenna in the calling mode is tested and shown to be within satisfactory limits; similarly, the specific absorption rates (SARs) of the prototype mobile phone are also found to be within standard SAR limits.

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“…Moreover, the volume for designing antennas critically affected realized efficiency and bandwidth characteristic has been reduced as modern mobile handsets have been getting smaller and thinner [1]. Several wide Impedance bandwidth antennas have been reported but all of proposed antennas [2][3] required large area and complicated structures. In the paper [4][5], the bandwidth enhancement method for single band by using a branch capacitor in a feed structure was presented.…”

Section: Introductionmentioning

confidence: 99%

An ultra-wide impedance bandwidth mobile handset antenna using novel dual-resonance feed structure

Lee

Yang

Kim

2012

2012 IEEE International Conference on Wireless Information Technology and Systems (ICWITS)

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An ultra-wide impedance bandwidth antenna is presented in this paper. To enhance an impedance bandwidth of antenna, a novel dual-resonance feed structure composed of two branch capacitors and inductors is combined with a conventional planar inverted-F antenna (PIFA). The antenna possesses a very wide impedance bandwidth which fully covers the band of various wireless communication services. The impedance bandwidth of proposed antenna is from 675 to 988 MHz in the lower band and from 1710 to 2695 MHz in the higher frequency band with good efficiency, respectively

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Multi-band hybrid antenna for ultra-thin mobile phone applications

Cited by 29 publications

References 4 publications

Reconfigurable PIFA with a parasitic strip line for a hepta‐band WWAN/LTE mobile handset

Reconfigurable PIFA with a parasitic strip line for a hepta‐band WWAN/LTE mobile handset

Embedded Antenna for Metallic Handheld Communication Devices

An ultra-wide impedance bandwidth mobile handset antenna using novel dual-resonance feed structure

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