A frequency agile, ultralow-profile, complementary split ring resonator-based electrically small antenna

Ming Chun Tang; Richard W. Ziolkowski

doi:10.1002/mop.27882

A frequency agile, ultralow-profile, complementary split ring resonator-based electrically small antenna

Ming Chun Tang, Richard W. Ziolkowski

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

6 Scopus citations

Abstract

The frequency agility of an electrically small, ultralow-profile, VHF-UHF antenna, which has evolved from a complementary split ring resonator unit cell design, is studied numerically. Simulation results demonstrate that when a varactor is integrated into the original 300-MHz passive antenna and its capacitance is varied linearly from 0 to 5.8 pF, a tuning ratio of 2.02:1 and an effective fractional bandwidth of 67.6% (approximately 679.74 times the original value) is achieved while maintaining |S₁₁| < -10dB (VSWR < 2), and a stable dipolar directivity pattern over the entire bandwidth. The overall dimensions of the proposed antenna at the maximum frequency f _max = c/λ_min are 0.03(λ_min) ² × 0.0066λ_min.

Original language	English (US)
Pages (from-to)	2425-2428
Number of pages	4
Journal	Microwave and Optical Technology Letters
Volume	55
Issue number	10
DOIs	https://doi.org/10.1002/mop.27882
State	Published - Oct 2013
Externally published	Yes

Keywords

ESA
frequency agile
low-profile

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1002/mop.27882

Cite this

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abstract = "The frequency agility of an electrically small, ultralow-profile, VHF-UHF antenna, which has evolved from a complementary split ring resonator unit cell design, is studied numerically. Simulation results demonstrate that when a varactor is integrated into the original 300-MHz passive antenna and its capacitance is varied linearly from 0 to 5.8 pF, a tuning ratio of 2.02:1 and an effective fractional bandwidth of 67.6% (approximately 679.74 times the original value) is achieved while maintaining |S11| < -10dB (VSWR < 2), and a stable dipolar directivity pattern over the entire bandwidth. The overall dimensions of the proposed antenna at the maximum frequency f max = c/λmin are 0.03(λmin) 2 × 0.0066λmin.",

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AU - Ziolkowski, Richard W.

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N2 - The frequency agility of an electrically small, ultralow-profile, VHF-UHF antenna, which has evolved from a complementary split ring resonator unit cell design, is studied numerically. Simulation results demonstrate that when a varactor is integrated into the original 300-MHz passive antenna and its capacitance is varied linearly from 0 to 5.8 pF, a tuning ratio of 2.02:1 and an effective fractional bandwidth of 67.6% (approximately 679.74 times the original value) is achieved while maintaining |S11| < -10dB (VSWR < 2), and a stable dipolar directivity pattern over the entire bandwidth. The overall dimensions of the proposed antenna at the maximum frequency f max = c/λmin are 0.03(λmin) 2 × 0.0066λmin.

AB - The frequency agility of an electrically small, ultralow-profile, VHF-UHF antenna, which has evolved from a complementary split ring resonator unit cell design, is studied numerically. Simulation results demonstrate that when a varactor is integrated into the original 300-MHz passive antenna and its capacitance is varied linearly from 0 to 5.8 pF, a tuning ratio of 2.02:1 and an effective fractional bandwidth of 67.6% (approximately 679.74 times the original value) is achieved while maintaining |S11| < -10dB (VSWR < 2), and a stable dipolar directivity pattern over the entire bandwidth. The overall dimensions of the proposed antenna at the maximum frequency f max = c/λmin are 0.03(λmin) 2 × 0.0066λmin.

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KW - low-profile

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A frequency agile, ultralow-profile, complementary split ring resonator-based electrically small antenna

Abstract

Keywords

ASJC Scopus subject areas

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