Miniature and Higher-Order Mode Ferrite Mimo Ring Patch Antenna for Mobile Communication System

Bae, Seok; Hong, Yang‐Ki; Lee, Jaejin; Park, Jihoon; Jalli, Jeevan; Abo, Gavin S.; Kwon, Hyuck M.; Jayasooriya, and Chandana K. K.

doi:10.2528/pierb10071910

Cited by 13 publications

(10 citation statements)

References 34 publications

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“…The far-field radiation pattern generated by each antenna was orthogonal each other. Simulation results of 2-RPA and measurement results of manufactured 1-RPA were presented in [9]. This paper presents measurement results of the manufactured ferrite 1-CPA.…”

mentioning

confidence: 98%

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Miniaturized Single Circular and Single Ring Patch Antenna for MIMO Communications Exploiting Pattern Diversity

Jayasooriya

Kwon

Bae

et al. 2010

2010 IEEE International Conference on Communications

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This paper proposes an annular-ring microstrip antenna for a 2×2 MIMO communication system. A single annular-ring microstrip antenna with two feed probes is used to generate two orthogonal radiation patterns. Radiation pattern associated with each probe is generated by FEKO simulations and shown that the patterns are orthogonal to each other. Orthogonal radiation patterns are needed to exploit pattern diversity instead of space diversity. Miniaturization is achieved by using a ferrite substrate instead of using a pure dielectric substrate. A ferrite annular-ring antenna with a single feed probe was manufactured and tested. Also a ferrite single circular patch antenna was manufactured and measurement results are presented.

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mentioning

confidence: 98%

“…In [9] a miniaturized co-located stacked two annular-ring microstrip antennas (2-RPA) using ferrite substrate were presented. Each antenna was excited with a single feed probe.…”

mentioning

confidence: 99%

Miniaturized Single Circular and Single Ring Patch Antenna for MIMO Communications Exploiting Pattern Diversity

Jayasooriya

Kwon

Bae

et al. 2010

2010 IEEE International Conference on Communications

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“…Capacity is calculated according to (10) for three different cases and is color-coded the same as for BER. For example, to achieve a capacity of 3 bits/s/Hz, the HEMA requires 1.4 dB higher SNR than for the ideal case (compare red and green curves).…”

Section: Performance Analysismentioning

confidence: 99%

“…These two feed probes were separated over the azimuth plane so that the generated far-field radiation patterns were approximately orthogonal. A similar configuration, a stacked two-ring patch antenna (2-RPA), was presented in [10]. Here, a ferrite substrate was used to reduce the size of the antenna.…”

Section: Introductionmentioning

confidence: 99%

On Performance of High-Efficiency Ferrite Meander Antenna (Hema) for Mimo Communications

Jayasooriya

Kwon²,

Syslo³

et al. 2013

PIER B

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Abstract-This paper presents a high-efficiency ferrite meander antenna (HEMA), which can be used to realize a 2 × 2 multipleinput-multiple-output (MIMO) communication system when it is used at both the transmitter and the receiver ends. This antenna is designed to operate at 2.45 GHz center frequency (f c ). It consists of two spatially separated half-cycle microstrip meander structures. Ferrite material is not used for the entire substrate, only beneath each meander structure. A standard FR-4 substrate is utilized as a system board. Impedance bandwidth and radiation patterns of the fabricated antenna are measured and compared with those of the simulation results. The −10 dB impedance bandwidth of the fabricated antenna is 262 MHz, whereas the simulated bandwidth is 235 MHz. According to the simulations, the gain and efficiency of the antenna are 2.2 dB and 81%, respectively. The efficiency of the antenna is confirmed by measurements. By using the simulated radiation patterns, correlation between the radiation patterns is calculated and employed in the generation of the channel matrix. Mutual impedance of the antennas and antenna efficiency are also included in the channel matrix, which in turn is used in bit error rate (BER) and ergodic capacity simulations. BER and ergodic capacity are utilized as performance metrics. The effect of antenna efficiency, mutual impedance of the antennas, and correlation between radiation patterns on system performance are presented.

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“…The multiple antennas closely spaced will cause unwanted mutual coupling and low antenna efficiency, thus the performance of the MIMO system will be deteriorated. To reduce the mutual coupling, various methods had been developed by applying an inductor coil [2], orthogonal radiations [3], an inverted-Y shaped stub on the ground plane [4], and notches on the ground plane as resonators [5]. In [6], two different kinds of antenna are used to realize dual-band, but they were not operating in the same frequency band.…”

Section: Introductionmentioning

confidence: 99%

Proximity-Fed Mimo Antenna With Two Printed Ifas and a Wideband T-Shaped Neutralization Line

Li¹,

Chu²

2011

PIER M

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Abstract-A proximity-fed MIMO (multiple-input-multiple-output) antenna with two printed IFAs (inverted-F antennas) and a wideband T-shaped neutralization line is presented. Each element printed IFA is fed by a proximity-fed structure which provides a parameter to control the return loss without effect on the isolation of the two IFAs. The wideband T-shaped neutralization line, which consists of two meandered branches and a rectangular grounded branch, can enhance the isolation of the two IFAs over a wide operation band (2.35-3.75 GHz). The two meandered branches are connected to the two IFAs, respectively, and the rectangular branch is connected to the ground plane. There are two parameters to adjust the isolation without effect on the return loss. Therefore, the operational bandwidth and the isolation of the proposed antenna can be controlled independently. A bandwidth of 46% with VSWR ≤ 2 and isolation ≥ 20 dB from 2.35 to 3.75 GHz is achieved. The MIMO antenna of compact size 40×14 mm 2 is suitable for application in mobile phones. Moreover, the ground plane size can be changed for applying the proposed antenna in different handsets. The results, including S-parameters, radiation pattern, mean effective gain (MEG), radiation efficiency, complex correlation coefficient and the effects of human hand and head, indicate the proposed MIMO antenna can provide spatial and pattern diversity.

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Miniature and Higher-Order Mode Ferrite Mimo Ring Patch Antenna for Mobile Communication System

Cited by 13 publications

References 34 publications

Miniaturized Single Circular and Single Ring Patch Antenna for MIMO Communications Exploiting Pattern Diversity

Miniaturized Single Circular and Single Ring Patch Antenna for MIMO Communications Exploiting Pattern Diversity

On Performance of High-Efficiency Ferrite Meander Antenna (Hema) for Mimo Communications

Proximity-Fed Mimo Antenna With Two Printed Ifas and a Wideband T-Shaped Neutralization Line

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