A Bandwidth-enhanced millimeter-wave microstrip comb-line array antenna with parasitic elements on liquid crystal polymer substrate

Hosono, Ryohei; Uemichi, Yusuke; Han, Xinjie; Guan, Ning; Nakatani, Yusuke

doi:10.1109/aps.2014.6905189

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…However, the enhancement is not efficient due to the mutual coupling between array elements. The bandwidth of patch antennas can be improved by adding parasitic elements [6,7] and designing appropriate impedance matching networks [8][9][10]. However, these structures are frequency-dependent and sensitive to fabrication tolerance.…”

Section: Introductionmentioning

confidence: 99%

A Dual Band Patch Antenna with a Pinwheel-Shaped Slots EBG Substrate

Zhang¹,

Teng²,

Liu³

et al. 2015

International Journal of Antennas and Propagation

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A dual band microstrip patch antenna integrated with pinwheel-shaped electromagnetic band-gap (EBG) structures is proposed. The patch antenna consists of a pair of spiral slots on the patch and is fed by using coaxial line. Its full-wave simulation predicts dual bands from 4.43 GHz to 4.56 GHz and from 4.96 GHz to 5.1 GHz in the C-band. The designed EBG with eight pinwheelshaped slots addresses smaller frequency drift compared with the traditional square mushroom-like EBG when applied to the patch antenna. With the help of designed EBG structure, the impedance bandwidth, radiation efficiency, and gain of the patch antenna are improved significantly. The 10 dB impedance bandwidth is extended by 3.4% and 6.5% at the low-and high-frequency bands, respectively. The radiation efficiency is increased by 5% and 17.8%, and the realized gain is enhanced by 1.87 dB and 1.56 dB at 4.57 GHz and 5.06 GHz, respectively. The designed EBG structure may have many applications in other types of planar antennas.

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Section: Introductionmentioning

confidence: 99%

A Dual Band Patch Antenna with a Pinwheel-Shaped Slots EBG Substrate

Zhang¹,

Teng²,

Liu³

et al. 2015

International Journal of Antennas and Propagation

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A design of 60‐GHz bandwidth‐enhanced comb‐line array

Kim

2020

Micro & Optical Tech Letters

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A diamond‐shape stub is proposed to enhance the bandwidth of a resonant type comb‐line array at 60 GHz. For linear polarization, a vertical slit is adopted and its optimal length is determined. Design graphs for the input impedance, quality factor (Q), and the resonant length of a single cell are presented. A simple demonstration is given that the Q of the array could be reduced by designing a stub having a lower Q. A resonant type comb‐line array is designed based on the design graphs. The performance of the proposed array is measured and compared to the conventional and published comb‐line arrays. The proposed array demonstrates a broader bandwidth, while the gain pattern is the same as that of the conventional comb‐line array.

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