A compact dual port UWB-MIMO/diversity antenna for indoor application

Biswal, Sonika Priyadarsini; Das, Susmita

doi:10.1017/s1759078717001283

Cited by 12 publications

(11 citation statements)

References 25 publications

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“…An UWB system with polarization diversity technique has potential applications in advanced instruments used for microwave imaging, radar and high-speed data transfer. Some UWB polarization diversity antennas are already reported in the literature [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. However, the application of those available structures is limited due to their large dimensions, multilayer structure, complex feedline, complex geometries, etc.…”

Section: Introductionmentioning

confidence: 99%

Inner Tapered Tree-Shaped Ultra-Wideband Fractal Antenna with Polarization Diversity

Singhal¹,

Singh²

2020

UWB Technology - Circuits and Systems

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A coplanar waveguide (CPW)-fed third iteration inner tapered tree-shaped ultra-wideband (UWB) fractal antenna for polarization diversity applications is presented. The antenna comprises of two orthogonal fractal antenna structures to achieve polarization diversity performance across the frequency spectrum of 4.7-19.4 GHz. An isolation of more than 15 dB is accomplished. The designed antenna has a nearly omnidirectional radiation pattern with an average gain of 2.45 dB, very low values of envelope correlation coefficient and capacity loss, nearly constant diversity gain (DG) and mean effective gain (MEG) values. The time domain analysis results illustrated the low dispersion in the radiated pulse. The designed antenna has advantages of wider bandwidth and miniaturized dimensions along with good diversity performance. These advantages make the designed antenna a promising candidate for future wireless communication systems having multipath fading as a major concern.

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Section: Introductionmentioning

confidence: 99%

Inner Tapered Tree-Shaped Ultra-Wideband Fractal Antenna with Polarization Diversity

Singhal¹,

Singh²

2020

UWB Technology - Circuits and Systems

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“…Furthermore, maintaining high isolation over the frequency range of UWB, X-band, and Ku-band is more difficult than that of small band. Several UWB-MIMO antennas with different geometries, sizes, and isolation levels have been designed and tested [6][7][8][9][10]. These designs face a major challenge of electromagnetic interference caused by existing narrowband communication systems like WiMAX (3.3-3.8 GHz) and WLAN (5.1-5.8 GHz).…”

Section: Introductionmentioning

confidence: 99%

“…The aim of this work is to propose a new dual-band notched UWB-MIMO antenna that achieves good impedance-matching, high isolation, and good diversity performance over the entire UWB, X-band, and Ku-band range (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). The remaining parts of this paper are structured as follows.…”

Section: Introductionmentioning

confidence: 99%

New design of UWB‐MIMO antenna with enhanced isolation and dual‐band rejection for WiMAX and WLAN systems

Eltrass

Elborae

2019

IET Microwaves, Antennas & Propagation

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In this work, a new design of wide‐band multiple‐input multiple‐output (MIMO) antenna with improved isolation and dual‐band rejection is proposed for wireless systems operating over the entire ultra‐wide‐band (UWB), X‐band, and Ku‐band (3–18 GHz). The proposed four‐element UWB‐MIMO antenna is fabricated on Rogers RT/Duroid‐5880 substrate with dimension of 73 × 73 × 0.79 mm3. It achieves high isolation (>20 dB) between antenna elements without using any decoupling structures. In order to prevent interference problems from nearby WiMAX (3.3–3.8 GHz) and WLAN (5.1–5.8 GHz) systems, a C‐shaped stub is embedded in the radiating patch and a pair of U‐shaped parasitic strips is inserted beside the feed line in the single element design. The effectiveness of the proposed design is demonstrated by investigating measurement and simulation results, and comparing them with other existing designs. The results show that the proposed design has an input reflection coefficient <−10 dB, a mutual coupling <−20 dB, and an omnidirectional radiation pattern across the bandwidth of interest (3–18 GHz) excluding the two rejected bands. Also, the proposed design exhibits high diversity performance in terms of envelope correlation coefficient (ECC <0.0015) and channel capacity loss (CCL < 0.3 bits/s/Hz). This reveals the effectiveness of the proposed design in wide‐band wireless applications such as satellite communications and microwave medical imaging.

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“…Therefore, the recent evolutions of UWB‐MIMO antenna system raise their demand for good wideband isolation level with compactness in the user terminals and a simultaneous ability for the frequency rejection of multiple narrowband systems to diminish the in‐band interferences. Several investigations have been made toward the design of UWB‐MIMO antennas in the literature . In Reference , a prototype having a size of 22 × 36 mm 2 was been presented, where the authors used an extended T‐shaped ground stub to achieve good isolation and ground strips to reject WLAN band.…”

Section: Introductionmentioning

confidence: 99%

“…Use of a quadrant shaped monopole in the development of a compact dual port dual‐band‐notched UWB‐MIMO antenna system with a continuity in the ground plane is proposed here for the first time and has not been previously reported in the literature. Though a quadrant shaped monopole was used in Reference for the design of a MIMO antenna, it considered separate ground planes for the individual antenna element. The discontinuity in the ground plane might face problems during its practical utility because all the incoming signals must have a common reference .…”

Section: Introductionmentioning

confidence: 99%

A compact printed ultra‐wideband multiple‐input multiple‐output prototype with band‐notch ability for WiMAX, LTEband43, and WLAN systems

Biswal

Das

2019

Int J RF Microw Comput Aided Eng

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A compact ultra-wideband multiple-input multiple-output (UWB-MIMO) antenna with good isolation and multiple band-notch abilities is developed in this work. It consists of two quadrant shaped monopole antennas backed by ground stubs. A good isolation is achieved due to the two proposed extended curved ground stubs. The frequency rejection for the WLAN system is realized by loading a capacitive loaded loop resonator adjacent to the feed line. The band rejection for the WiMAX and LTE band43 system is achieved by embedding a quadrant shaped CSRR on each radiator's surface. The measured bandwidth of the antenna is 3.06 GHz-11 GHz (|S 11 | < −10 dB and |S 21 | < −18 dB) with a band rejection from 3.5 GHz-4 GHz to 5.1 GHz-5.85 GHz, respectively. Time domain performances are investigated in terms of group and phase delay characteristics. Diversity characteristics are evaluated in terms of the envelope correlation coefficient, mean effective gain, and channel capacity loss.

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A compact dual port UWB-MIMO/diversity antenna for indoor application

Cited by 12 publications

References 25 publications

Inner Tapered Tree-Shaped Ultra-Wideband Fractal Antenna with Polarization Diversity

Inner Tapered Tree-Shaped Ultra-Wideband Fractal Antenna with Polarization Diversity

New design of UWB‐MIMO antenna with enhanced isolation and dual‐band rejection for WiMAX and WLAN systems

A compact printed ultra‐wideband multiple‐input multiple‐output prototype with band‐notch ability for WiMAX, LTEband43, and WLAN systems

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