Dual-polarised dielectric resonator antenna with high isolation and low cross-polarisation

Tang, Xiao-rong; Zhong, Shun‐Shi; Kuang, L.-B.; Sun, Zhenrong

doi:10.1049/el.2009.1014

Cited by 44 publications

(29 citation statements)

References 3 publications

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“…2 So, DR based MIMO systems are now addressed in most of the literature. [3][4][5][6][7][8][9] For example, a dual-port rectangular DR based MIMO antenna is reported in Ref. 3 for 4G applications.…”

Section: Introductionmentioning

confidence: 99%

L‐shaped dielectric resonator based circularly polarized multi‐input‐multi‐output (MIMO) antenna for wireless local area network (WLAN) applications

Sahu

Das

Gangwar

2018

Int J RF Microw Comput Aided Eng

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A dielectric resonator (DR) based circularly polarized multi‐input‐multi‐output (MIMO) antenna is studied in this article for wireless local area network (WLAN) applications. In this work, two self‐complementary L‐shaped dielectric resonators are used as two radiators and each radiator is excited by a 50 Ω coaxial probe feed network. The position of the feed network is selected in such a way that it directly generates a pair of orthogonal modes inside the DR. Along with this, diversity in the radiated beam direction is observed to provide low field correlation and a defected ground structure (DGS) is implemented to provide low inter‐port correlation. Experimental test results show that the proposed MIMO structure possesses a 10‐dB impedance bandwidth of 15.6% (5.2‐6.08 GHz) and a 3‐dB axial ratio (AR) bandwidth of 7.05% (5.2‐5.58 GHz). Besides, MIMO suitability of the proposed structure is evaluated by means of envelope correlation coefficient (ECC), diversity gain (DG), and channel capacity loss (CCL).

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Section: Introductionmentioning

confidence: 99%

L‐shaped dielectric resonator based circularly polarized multi‐input‐multi‐output (MIMO) antenna for wireless local area network (WLAN) applications

Sahu

Das

Gangwar

2018

Int J RF Microw Comput Aided Eng

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“…In [3], a pair of balanced probes is suggested,and higher than 30dB isolation is measured. In [4], a comparative study of some common excitation techniques is presented, and a dual-polarized DRA with a hybrid feed is described, resulting in the isolation of 35.9 dB. In our recent study, a multi-stub feed network is adopted, where the isolation of better than 45dB has been measured [5].…”

Section: Introductionmentioning

confidence: 99%

Dual-polarized dielectric resonator antenna with very high isolation and lower cross-polarization

Zhong

Kong²,

Tang³

2013

2013 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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A dual-polarized dielectric resonator antenna (DRA) of simple structure is presented with very high isolation and lower cross-polarization. Its measured isolation reaches 46.8 dB within the impedance bandwidth of larger than 12.5% by using the H/U-shaped slot coupling with multi-stub feed lines. The measured crosspolarization level is -21.4 dB and -18.1dB for two ports, respectively. This DRA can be expanded into a large array for the synthetic aperture radar and wireless application.

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“…The new wideband switched line coupler provides good impedance matching, equal power splitting and consistent 90°phase shifting over a wide bandwidth. The proposed antenna exhibits a 3 dB axial ratio bandwidth of 47.69% and an impedance matching bandwidth of 48.46% for a voltage standing wave ratio ≤2.Introduction: The dielectric resonator antenna (DRA) has been widely investigated and used over the past two decades owing to its inherent features such as small size, high radiation efficiency, simple coupling schemes and relatively wide bandwidth compared with microstrip antennas [1,2]. Circular polarisation (CP) has been used in a number of radar, communication and navigation systems to allow for more flexibility in the orientation of the transmitter and the receiver antennas.…”

mentioning

confidence: 99%

“…Introduction: The dielectric resonator antenna (DRA) has been widely investigated and used over the past two decades owing to its inherent features such as small size, high radiation efficiency, simple coupling schemes and relatively wide bandwidth compared with microstrip antennas [1,2]. Circular polarisation (CP) has been used in a number of radar, communication and navigation systems to allow for more flexibility in the orientation of the transmitter and the receiver antennas.…”

mentioning

confidence: 99%

Broadband circularly polarised dielectric resonator antenna fed by wideband switched line coupler

Han¹,

Zhong²,

Liu³

2014

Electron. lett.

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A dual-feed rectangular dielectric resonator antenna with a wideband switched line coupler is proposed for generating broadband circular polarisation. The new wideband switched line coupler provides good impedance matching, equal power splitting and consistent 90°phase shifting over a wide bandwidth. The proposed antenna exhibits a 3 dB axial ratio bandwidth of 47.69% and an impedance matching bandwidth of 48.46% for a voltage standing wave ratio ≤2.Introduction: The dielectric resonator antenna (DRA) has been widely investigated and used over the past two decades owing to its inherent features such as small size, high radiation efficiency, simple coupling schemes and relatively wide bandwidth compared with microstrip antennas [1,2]. Circular polarisation (CP) has been used in a number of radar, communication and navigation systems to allow for more flexibility in the orientation of the transmitter and the receiver antennas. The bandwidth of the CP DRA is closely related to the bandwidth of its feed network. The CP DRA with a dual-feed feed network normally results in a relatively wider axial ratio (AR) bandwidth than the single-feed type of simple-structure dielectric resonators [2]. In the dual-feed approaches [3][4][5], a hybrid coupler is often used to generate two quadrature feeding signals. Lim et al.[5] present a dual-feed CP DRA with measured impedance and AR bandwidths of 24.95 and 33.8%, respectively. Nevertheless, the effective AR bandwidth [5] is limited to 24.95%. This limitation may have come from its coupler, whose bandwidth is limited by the frequency dependence of the ring lengths and is generally on the order of 20-30% [6]. To overcome this limitation, a new feed network named as the wideband switched line coupler (WSLC) has been designed in the work reported in this Letter, the proposed CP DRA excited with which demonstrates good wideband characteristics in terms of impedance matching and CP.

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Dual-polarised dielectric resonator antenna with high isolation and low cross-polarisation

Cited by 44 publications

References 3 publications

L‐shaped dielectric resonator based circularly polarized multi‐input‐multi‐output (MIMO) antenna for wireless local area network (WLAN) applications

L‐shaped dielectric resonator based circularly polarized multi‐input‐multi‐output (MIMO) antenna for wireless local area network (WLAN) applications

Dual-polarized dielectric resonator antenna with very high isolation and lower cross-polarization

Broadband circularly polarised dielectric resonator antenna fed by wideband switched line coupler

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