Tunable-Slot-Type Ground Radiation Antenna with Dual Band Operation Using LC Resonator

Zahid, Zeeshan; Kim, Hyeongdong

doi:10.5515/jkiees.2017.17.2.71

Cited by 6 publications

(6 citation statements)

References 5 publications

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“…Mode 1 resembles that of a half wave dipole that does not change phase across the ground plane. On the other hand, Mode 2 resembles that of a full wave dipole mode [42]. On the contrary to Mode 1, the current density of mode 2 is minimum at the middle of the longer edge of the ground plane.…”

Section: Coupling Mechanism and Modal Analysismentioning

confidence: 94%

Decoupler Design for Mimo Antennas of Usb Dongle Applications Using Ground Mode Coupling Analysis

Zahid¹,

Qu²,

Kim³

et al. 2018

PIER M

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In this paper, the impact of decoupler type has been analyzed on the performance of planar inverted-F antenna (PIFA)-based multiple-input multiple-output (MIMO) antenna. A T-type and a loop-type decoupler have been employed for the isolation of the MIMO antennas, and the performances of the two cases have been compared. The decouplers have been selected based on their different coupling mechanisms with the dominant ground mode. The antennas have been designed for the ground configuration of a USB dongle operating at 2.45 GHz band. Characteristic mode analysis of the ground plane has been carried out, and the MIMO systems have been analysed based on the coupling among the antenna, decoupler and the dominant characteristic mode of the ground plane. It has been observed that the coupling between the decoupler and the ground mode significantly affects the radiation efficiency as well as the diversity performance of the MIMO antenna.

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Section: Coupling Mechanism and Modal Analysismentioning

confidence: 94%

Decoupler Design for Mimo Antennas of Usb Dongle Applications Using Ground Mode Coupling Analysis

Zahid¹,

Qu²,

Kim³

et al. 2018

PIER M

Self Cite

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“…Slot structures are commonly used to achieve bandwidth enhancement in multiband printed antennas. Traditional slot fractal shapes and other structures have been effectively used to design antennas with and multiband for a variety of wireless applications [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Sze et al [7] suggested a low profile dual-band Annular Ring Slot Antenna (ARSA) for the use in 2.4/5 GHz (WLANs).…”

Section: Introductionmentioning

confidence: 99%

Compact Multiband Microstrip Printed Slot Antenna Design for Wireless Communication Applications

Hammas¹,

Hasan²,

Jalal

2020

AEM

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In this paper, a compact multiband printed antenna is proposed to cover four resonant bands in the range of 1-6 GHz. The antenna structure is inspired from that of the classical multi-cavity magnetron resonator. The antenna comprises a slot annular ring structure in the ground plane of an Isola FR4 substrate having Ԑr = 3.5 and thickness h=1.5 mm. The outer circle of the annular ring is loaded with radial arranged small circular slots. On the opposite side of the substrate, the antenna is fed with a 50-Ohm microstrip line. To investigate the effect of different antenna elements on the antenna performance, a parametric study is conducted. The antenna is simulated, fabricated, and measured. The simulated 10 dB return loss bandwidths for the four resonant bands are 35% (1.53–2.11GHz), 14% (2.9–3.34GHz), 12% (4.2–4.75GHz), and 9% (4.94–5.39GHz), respectively. Thus, the antenna is a proper candidate for many in use bands of wireless systems (1.65, 3.14, 4.44, 5.24 GHz), including LTE-FDD, GNSS, GSM-450, W-CDMA/HSPA/k, 802.11a, and IEEE 802.11ac WLAN. The results indicate that the designed antenna has quad-band resonant responses with substantial frequency ratios of f4/f3, f3/f2 and f2/f1. Besides, the antenna offers reasonable radiation characteristics with a gain of 2.5, 4.0, 6.2, and 4.2 dBi, throughout the four resonant bands.

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“…However, the PIFA has more and more complicated antenna pattern to satisfy the various demands for wireless service such as 2G, 3G, and long‐term evolution (LTE). The mobile antennas evolve as a way to implement multiband using an impedance matching circuit in a simple antenna pattern including tunable antennas . From the 2010s, the mobile handsets utilize the metal rim or cover design to make mobile handsets aesthetic and strong mechanically.…”

Section: Introductionmentioning

confidence: 99%

Symmetrical metal‐rimmed mobile antenna with decoupling network for penta‐band

Lee

2018

Micro & Optical Tech Letters

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A symmetrical metal‐rimmed mobile antenna, which is designed to be separated into two antennas covering different bands, is proposed for penta‐band in this letter. The proposed antenna consists of a gap‐coupled quarter wavelength loop antenna to reduce the length of an antenna and a decoupling network of 90° delay line to improve an isolation in the low band. Its resonant frequencies in low and high band can be controlled by the length of a feed line and a lumped series inductor, respectively. Since the slit of the metal rim is located at the center of the phone, the designed metal‐rimmed antenna could be less affected by the hand compared to the case where the slit is located on the side of the phone. To verify the performance, we have simulated and measured the characteristics of the proposed antenna without and with the decoupling network such as reflection coefficients, far‐field radiation patterns, and total efficiencies. Good agreement between the simulated and measured results is obtained.

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Tunable-Slot-Type Ground Radiation Antenna with Dual Band Operation Using LC Resonator

Cited by 6 publications

References 5 publications

Decoupler Design for Mimo Antennas of Usb Dongle Applications Using Ground Mode Coupling Analysis

Decoupler Design for Mimo Antennas of Usb Dongle Applications Using Ground Mode Coupling Analysis

Compact Multiband Microstrip Printed Slot Antenna Design for Wireless Communication Applications

Symmetrical metal‐rimmed mobile antenna with decoupling network for penta‐band

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