Bandwidth Enhancement of the Small-Size Internal Laptop Computer Antenna Using a Parasitic Open Slot for Penta-Band WWAN Operation

Wong, Kin‐Lu; Chen, Wei-Ji; Chou, Liang-Che; Hsu, Ming-Ren

doi:10.1109/tap.2010.2055815

Cited by 42 publications

(37 citation statements)

References 24 publications

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“…All measured impedance bandwidth of the proposed antenna meets the required bandwidth specification from 810 to 980 MHz and 1630 to 2240 MHz with VSWR below 3 : 1, which satisfies the demanded bandwidth specification for the GSM850/900 and GSM1800/1900/UMTS2100 operation. Notice that 3 : 1 VSWR is widely accepted as the design specification for the internal WWAN tablet computer antennas [15][16][17]20].…”

Section: Resultsmentioning

confidence: 99%

“…As reported in [13,14], some inverted-F antennas for tablet computers are presented, which have the simple structure and narrow footprint characteristics. Besides, it can be seen some new technologies are applied in the tablet computer antenna, like the parasitic open slot structure in [15], and the parallel resonant structure in [16,17]. However, most of the existing designs [12][13][14][15][16][17][18][19] are somewhat large and not so suitable for tablet computer use, so it is important to further reduce the size and enhance operating bandwidth of the antenna.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Printed Antenna for Penta-Band Wwan Tablet Computer Application Using Embedded Parallel Resonant Structure

Chen¹,

Ban²,

Sun³

et al. 2013

PIER

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Abstract-A compact printed antenna for WWAN tablet computer application is proposed in this article. The designed antenna occupies a small area of 35 × 12 mm 2 , which is small enough to be incorporated in a tablet computer, and is placed close to the edge of the shielding wall with a distance of 10 mm. The antenna has a simple structure of comprising a long coupling strip and a feeding strip to capacitively excite the long coupling strip. In this scheme, a chip inductor is loaded on one branch of the feeding strip, which can form a parallel resonant structure to enhance the bandwidth of the lower band. As a result, two wide operating bands to cover GSM850/900 and GSM1800/1900/UMTS2100 operation are obtained with desired 3 : 1 VSWR. The proposed antenna is an all-printing structure with low production cost, which is especially suited for the thin-profile tablet computers.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Printed Antenna for Penta-Band Wwan Tablet Computer Application Using Embedded Parallel Resonant Structure

Chen¹,

Ban²,

Sun³

et al. 2013

PIER

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show abstract

“…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%

“…To generate additional resonance, many parasitic structures with a length of l g /4 are presented in [13][14][15][16]. By embedding the parasitic slots in the ground plane, a new resonance is generated at 900 MHz [13] or 1795 MHz [14].…”

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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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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“…Some promising WWAN/LTE internal antennas for mobile devices have also been reported [2][3][4][5][6][7][8][9][10][11][12][13]. The operating bandwidth usually decreases as the size of antenna is reduced.…”

Section: Introductionmentioning

confidence: 99%

Internal octa-band antenna for WWAN/LTE operation in a tablet computer

Wang

2012

2012 Asia Pacific Microwave Conference Proceedings

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A small-size uniplanar antenna with octa-band WWAN/LTE operation in the tablet computer is proposed. The antenna comprises a driven monopole, parasitic shorted strip and an internal printed matching circuit integrated with a shorted strip. And, the obtained impedance bandwidth across the operating bands can reach about 262 / 1610 MHz for the LTE / WWAN bands, respectively. The measured peak gains and radiation efficiencies are about 1.33 / 3.0 dBi and 85 / 98 % for the LTE / WWAN bands, respectively.

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Bandwidth Enhancement of the Small-Size Internal Laptop Computer Antenna Using a Parasitic Open Slot for Penta-Band WWAN Operation

Cited by 42 publications

References 24 publications

Printed Antenna for Penta-Band Wwan Tablet Computer Application Using Embedded Parallel Resonant Structure

Printed Antenna for Penta-Band Wwan Tablet Computer Application Using Embedded Parallel Resonant Structure

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

Internal octa-band antenna for WWAN/LTE operation in a tablet computer

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