A bisected miniaturized ZOR antenna with increased bandwidth and radiation efficiency

Shu Yen Yang; Mou-Kehn Ng

doi:10.1109/LAWP.2013.2243696

A bisected miniaturized ZOR antenna with increased bandwidth and radiation efficiency

Shu Yen Yang, Mou-Kehn Ng

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

A compact planar, via-free, and bisected zeroth-order resonator (ZOR) antenna based on bisected interdigital capacitor-loaded transmission line (B-CL-TL), with improved bandwidth and higher radiation efficiency is proposed. Strong miniaturization and increase of bandwidth and efficiency are obtained by dissecting the initial design by half without incurring compromise. The antenna consists of two cascaded coplanar interdigital capacitors as series capacitors shorted to the ground plane at one end. A meander-line inductor is implemented for matching. A fabricated prototype has dimensions of 0.11λ₀ × 0.18λ₀ × 0.01λ₀ in total size, yielding an omnidirectional far-field pattern, and provides a 135-MHz bandwidth (6.1%) with a measured radiation efficiency of 76.8% at 2.21 GHz.

Original language	English
Article number	6423203
Pages (from-to)	159-162
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	12
DOIs	https://doi.org/10.1109/LAWP.2013.2243696
State	Published - 3 Dec 2013

Keywords

Antenna miniaturization
Bandwidth enhancement
Interdigital capacitor (IDC)
Radiation efficiency
Zeroth-order resonator (ZOR) antenna

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abstract = "A compact planar, via-free, and bisected zeroth-order resonator (ZOR) antenna based on bisected interdigital capacitor-loaded transmission line (B-CL-TL), with improved bandwidth and higher radiation efficiency is proposed. Strong miniaturization and increase of bandwidth and efficiency are obtained by dissecting the initial design by half without incurring compromise. The antenna consists of two cascaded coplanar interdigital capacitors as series capacitors shorted to the ground plane at one end. A meander-line inductor is implemented for matching. A fabricated prototype has dimensions of 0.11λ0 × 0.18λ0 × 0.01λ0 in total size, yielding an omnidirectional far-field pattern, and provides a 135-MHz bandwidth (6.1%) with a measured radiation efficiency of 76.8% at 2.21 GHz.",

keywords = "Antenna miniaturization, Bandwidth enhancement, Interdigital capacitor (IDC), Radiation efficiency, Zeroth-order resonator (ZOR) antenna",

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doi = "10.1109/LAWP.2013.2243696",

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A bisected miniaturized ZOR antenna with increased bandwidth and radiation efficiency

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Keywords

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