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

Lai, Xiao-Zheng; Xie, Ze-Ming; Cen, Xuan-Liang; Zheng, Zibin

doi:10.2528/pier13070405

Cited by 5 publications

(5 citation statements)

References 29 publications

(7 reference statements)

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“…CP MIMO/diversity antennas have been investigated and reported in [18][19][20][21][22]. Diagonally arranged planar inverted folded antenna elements along with arrow-shaped slots on the ground plane have been used in [18] to achieve diversity and dual sense CP for radio frequency identification (RFID) applications. This structure exhibits a wide ARB of 15.5% and isolation of 25 dB and had an overall dimension of 0.75λ g × 0.75λ g .…”

Section: Introductionmentioning

confidence: 99%

Wide band circularly polarised diversity antenna for satellite and mobile communication

Kharche¹,

Reddy

Gupta

et al. 2017

IET Microwaves, Antennas & Propagation

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A wide band circularly polarised diversity antenna consisting of closely spaced monopole radiators is proposed. Two novel, microstrip fed‐printed monopoles are designed on a common ground plane. The ground plane which is asymmetric with respect to the feed line along with the planar monopole structure is used to achieve circular polarisation. The monopoles which are symmetric with respect to the vertical axis produce orthogonally polarised waves. A modified split ring resonator‐like structure is designed on the ground plane to achieve high port‐to‐port isolation. The impedance bandwidth (Voltage Standing Wave Ratio < 2) of the proposed antenna is 45.53% which covers the frequency band between 1.73 and 2.75 GHz. Isolation of >18 dB between the radiating elements is achieved. The proposed antenna provides an axial ratio (AR < 3 dB) bandwidth of 41.28% between 1.73 and 2.63 GHz. The radiation patterns are stable and the envelope correlation coefficient is <0.005 over the operating band. The proposed structure achieves efficiency >70% and gain >2 dBic over the frequency band between 1.73 and 2.63 GHz.

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Section: Introductionmentioning

confidence: 99%

Wide band circularly polarised diversity antenna for satellite and mobile communication

Kharche¹,

Reddy

Gupta

et al. 2017

IET Microwaves, Antennas & Propagation

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show abstract

“…Currently, various methods have been used to decrease antenna mutual coupling [2][3][4][5][6][7][8][9][10][11]. In [2], a parasitic ring resonator with half wavelength is used.…”

Section: Introductionmentioning

confidence: 99%

“…In [3][4][5], neutralization lines are introduced to create a second path of current, while the radiation patterns of the antennas with the line will be affected. In [6], a small branch is introduced to improve the antenna to antenna isolation with a fractional bandwidth of 12.4%. Eigen-mode has also been used in MIMO antenna decoupling designs, as reported in [7][8][9], and the orthogonality of the modes is utilized.…”

Section: Introductionmentioning

confidence: 99%

A Second Order Decoupling Design Using a Resonator and an Interdigital Capacitor for a Mimo Antenna Pair

Wang¹,

Zhao²,

Chen³

et al. 2017

PIER Letters

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Abstract-In this paper, a second-order decoupling design using a resonator and an interdigital capacitor is proposed for an MIMO antenna pair in mobile terminals. The proposed antenna pair consists of an interdigital capacitor and an open loop resonator. By properly combining the responses of the resonator and interdigital capacitor, a second-order decoupling performance can be achieved. Meanwhile, isolation between the two antennas is increased by at least 15 dB within the frequency band of interest, from −5 dB to −20 dB. Moreover, the decoupled antenna pair maintains good impedance matching performance from 2.4 GHz to 2.5 GHz. The proposed decoupled antenna pair and its coupled counterpart have been fabricated and measured. The measured results agree with the simulation ones. The proposed MIMO antenna pair is an eligible candidate for Wi-Fi MIMO applications in the 2.4 GHz band.

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“…In recent years, many methods have been explored to deal with the isolation characteristic of a MIMO system [2][3][4][5][6][7][8][9][10][11]. In the design of [2], a folded resonator with about half a guided wavelength placed above the antenna is used to improve the isolation.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the integrated PIFA without the folded resonator, the isolation of the proposed antenna is significantly improved. In [3], a smaller square branch at the opposite ground corner is used to improve high isolation, and the antenna with a measured isolation better than 25 dB presents a bandwidth of 12.4%. A T-shaped shorting strip is applied into a three-antenna MIMO system to suppress the mutual coupling [4].…”

Section: Introductionmentioning

confidence: 99%

Wideband Planar Inverted-F Mimo Antenna With High Isolation

Tang¹,

Wang²,

Yin³

et al. 2015

PIER Letters

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Abstract-A wideband planar inverted-F MIMO antenna with high isolation is proposed in this letter. The proposed MIMO antenna consists of two back-to-back planar inverted-F antennas and a forkshaped decoupling stub. The two planar inverted-F antennas are merged together with a shorting strip connected to the ground plane. In order to enhance the isolation, a fork-shaped decoupling stub connected to the ground plane through shorting pins is introduced, and the impedance matching is significantly improved simultaneously. The proposed antenna prototype is fabricated and measured, and a compact size of 28 × 26 mm 2 makes the proposed antenna be easily integrated in a MIMO system. Measured results show that the measured bandwidth for |S 11 | less than −10 dB covers from 5.05 GHz to 6.23 GHz, and the measured isolation is higher than 20 dB in the whole working frequency band.

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

Cited by 5 publications

References 29 publications

Wide band circularly polarised diversity antenna for satellite and mobile communication

Wide band circularly polarised diversity antenna for satellite and mobile communication

A Second Order Decoupling Design Using a Resonator and an Interdigital Capacitor for a Mimo Antenna Pair

Wideband Planar Inverted-F Mimo Antenna With High Isolation

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