A Novel Quad-Band (Gsm850 to Ieee 802.11A) Pifa for Mobile Handset

Li, Pengcheng; Pan, Jin; Yang, Dan; Nie, Zaiping; Xing, Jun

doi:10.2528/pier13012403

Cited by 6 publications

(8 citation statements)

References 28 publications

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“…As an example, for the application in the handheld device such as the tablet computer, phone tablet and mobile phone, typical designs on achieving multiband operation for the internal LTE/WWAN antenna include configuring the antenna structure to have multiple resonant paths for multiple bands [1]- [9] or using active switching circuits to achieve reconfigurable antenna structures for different operating bands or using active tunable circuits to tune for multiband operation of the antenna [10]- [17]. The latter design in [10]- [17] can generally lead to smaller antenna sizes than the former design with multiple resonant paths. However, the use of active switching or tunable circuits in achieving multiband Manuscript operation will generally complicate the antenna design.…”

Section: Introductionmentioning

confidence: 99%

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Small-Size LTE/WWAN Tablet Device Antenna With Two Hybrid Feeds

Wong

Chen

2014

IEEE Trans. Antennas Propagat.

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A small-size tablet device antenna formed by a simple folded metal plate excited by a low-band feed (direct feed with matching network) and a high-band feed (gap-coupled feed with matching network) for the LTE/WWAN operation in the 698-960 and 1710-2690 MHz bands is presented. The folded metal plate has a size of 3 5 30 mm and is disposed in a clearance area of 10 30 mm (300 mm ) above the top edge of the device ground plane. The matching network in the low-band feed compensates for additional capacitance for the folded metal plate with a resonant length much less than 0.25 wavelength in the lower band (698-960 MHz) and enhances the antenna's impedance matching to achieve a wide lower band. The matching network in the high-band feed also enhances the antenna's impedance matching to achieve a wide higher band (1710-2690 MHz). In addition, the coupling gap in the high-band feed can reject the low-band frequency. Also, the matching network in the low-band (high-band) feed includes a bandpass circuit which can help reject the high-band (low-band) frequency. Good isolation between the two hybrid feeds can, hence, be obtained, which makes the antenna with simple structure and small size have good radiation performances in both lower and higher bands. Details of the proposed antenna are presented. Index Terms-dual-feed antennas, LTE/WWAN antennas, mobile antennas, multiband antennas, tablet device antennas. 0018-926X

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Section: Introductionmentioning

confidence: 99%

“…In such a design, the radiating metal portion has a much simpler structure than the design with multiple resonant paths or branches [1]- [9]. In addition, since no active elements are required, the antenna is much less complicated than the design using active switching or tunable circuits [10]- [17].…”

Section: Introductionmentioning

confidence: 99%

Small-Size LTE/WWAN Tablet Device Antenna With Two Hybrid Feeds

Wong

Chen

2014

IEEE Trans. Antennas Propagat.

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“…Therefore, the MIMO antenna, where antenna elements are separated on the top and bottom portions of a mobile handset, might be an alternative configuration to use the space for the antenna more effectively. In addition to the coverage of frequency bands such as GSM850/GSM900/DCS/PCS/UMTS, operation at the new frequency band (LTE 13 band, 746 ∼ 787 MHz) requires a significantly wide impedance bandwidth at a lower frequency band [16][17][18][19][20][21][22]. In general, to widen the impedance bandwidth, an additional antenna volume is also needed [23,24].…”

Section: Introductionmentioning

confidence: 99%

Multiband Handset Antenna Analysis Including Lte Band Mimo Service

Wi¹,

Kim²,

Jung³

et al. 2013

PIER

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Abstract-A compact multiband handset antenna including MIMO antenna operation for LTE 13 band (746 ∼ 787 MHz) applications is proposed. The proposed antennas are separately located on the top and bottom portions of a mobile handset in order to use the antenna area more effectively. The proposed antenna achieves isolations of higher than 14 dB, enveloped correlation coefficients (ECC) of less than 0.25, and total efficiencies of greater than 40%. The operating frequency bands of Antenna 1 and Antenna 2 include the LTE 13 (746 ∼ 787 MHz)/DCS/PCS/UMTS (1710 ∼ 2170 MHz) bands and the LTE 13 (746 ∼ 787 MHz)/GSM850/900 (824 ∼ 960 MHz) bands, respectively.

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“…Recently, many researches have been conducted on Planar inverted-F antenna (PIFA) [1][2][3][4][5], since they are widely used in wireless communication systems due to advantages such as low profile, light weight, and conformal to the mounting structure. However, PIFAs are usually used for linear polarization, causing severe limitations for practical applications.…”

Section: Introductionmentioning

confidence: 99%

A Novel Technique for Broadband Circular Polarized Pifa and Diversity Pifa Systems

Lai

Xie²,

Cen³

et al. 2013

PIER

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Abstract-In this paper, a novel technique for planar inverted-F antenna (PIFA) with broadband circular polarization and pattern diversity is proposed. A defeated ground structure (DGS) has achieved broadband circular polarized (CP) PIFA by using a square branch at the ground corner with arrow-shaped slot. The pattern diversity PIFA system consists of two CP PIFAs placed symmetrically on the diagonal of DGS. Furthermore, the DGS improves port-to-port isolation by using another smaller square branch at the opposite ground corner. Finally, a prototype is fabricated and measured. The measured results agree well with simulation, and show 10-dB matching bandwidth of 16.3% (825-986 MHz), 3-dB axial ratio (AR) bandwidth of 15.5% (830-982 MHz), and 25-dB isolation bandwidth of 12.4% (848-968 MHz), which shows suitability for radio-frequencyidentification (RFID) application.

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A Novel Quad-Band (Gsm850 to Ieee 802.11A) Pifa for Mobile Handset

Abstract: Abstract-In this paper, a novel planar inverted-F antenna (PIFA) with slotted ground structure is proposed for multiband mobile communication application. The multimode performance is applied for multiband operation in our design.

Cited by 6 publications

References 28 publications

Small-Size LTE/WWAN Tablet Device Antenna With Two Hybrid Feeds

Small-Size LTE/WWAN Tablet Device Antenna With Two Hybrid Feeds

Multiband Handset Antenna Analysis Including Lte Band Mimo Service

A Novel Technique for Broadband Circular Polarized Pifa and Diversity Pifa Systems

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