A CPW ‐fed triple band OCSRR embedded monopole antenna with modified ground for WLAN and WIMAX applications

Abstract-This paper describes a compact triple-band monopole antenna based on Open Complementary Split Ring Resonators (OCSRRs) for Wireless Local Area Network (WLAN) and Worldwide interoperability Microwave Access (WiMAX) applications. The monopole antenna with engraved ground plane is used to cover WLAN frequencies (2.67 GHz and 5.47 GHz). The resonant frequency of WiMAX (3.43 GHz) is achieved by introducing OCSRR in the monopole antenna. In order to achieve multiband and good impedance matching, OCSRRs are introduced in the rectangular monopole antenna. The prototype antenna is fabricated on an FR-4 substrate having dimension of 29.4 × 26 × 1.6 mm 3 . Simulated and measured results are shown in good equivalence. The dipole radiation pattern is obtained in the elevation plane (E-plane), and omnidirectional radiation pattern is obtained in the azimuthal plane (H-plane). Parametric analysis of OCSRRs is studied to attain the best results. The proposed antenna has adequate advantages, including compact size, multiband, and impedance matching.

Section: Antenna Design and Simulated Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Metamaterial Inspired Open Complementary Split Ring Resonators for Multiband Operation

Daniel¹,

Pandeeswari²,

Raghavan³

2017

“…The introduction of this SRR creates a solenoidal current with time fluctuating magnetic field which generates a magnetic response from the conductor thereby exhibiting a resonance at 1.5 GHz. The resonance frequency of the circular SRR can be calculated by Equation (3) [22].…”

Section: Proposed Antenna Designmentioning

confidence: 99%

A Miniaturized Volkswagen Logo Uwb Antenna With Slotted Ground Structure and Metamaterial for Gps, Wimax and Wlan Applications

Ali¹,

Biradar²

2017

Abstract-A novel concept of using slotted ground structure and a single circular split ring resonator (SRR) to achieve multiband operation from a miniaturized UWB antenna is presented in this paper. Initially, a miniaturized Volkswagen logo ultrawideband (UWB) antenna having −10 dB impedance bandwidth of about 124% (2.9-12.4 GHz) in simulation and 116.7% (3.1-11.8 GHz) under measurement is designed. This miniaturization leads to about 10% increment in −10 dB reflection coefficient bandwidth and about 66.71% reduction in the volume of the proposed UWB antenna as compared to the conventional circular antenna. In order to reconfigure the proposed UWB antenna to operate it at 1.5 (GPS), 3.5 (WiMAX), 5.2 and 5.8 GHz (WLAN) frequency bands, slotted ground structure with metamaterial is used. The proposed metamaterial is a circular SRR consisting of a single circular ring and is placed on the slotted ground structure of the proposed antenna to achieve 1.5 GHz band. The proposed configuration has a volume of 0.290λ 0 × 0.290λ 0 × 0.015λ 0 (30 × 30 × 1.6 mm 3 ) at a lower resonating band of 2.9 GHz and is fabricated on a widely available FR4 substrate with a loss tangent of 0.02 and dielectric constant of 4.4. Simulated and experimental results show that the proposed design yields S 11 < −10 dB at the targeted frequencies. Good impedance matching, stable radiation characteristics with cross-polarization level less than −15 dB (both in E and H planes), VSWR < 2, average gain of 3.09 dBi and radiation efficiency of more than 85% are observed at the designed band when the antenna is fabricated and tested.

“…Metamaterial inspired antenna consists of a unit cell or a few metamaterial unit cells for performance enhancement of antenna was studied by Si et al [10]. Metamaterial inspired antennas have been investigated for antenna performance enhancement such as impedance matching [11], bandwidth enhancement [12], gain improvement [13], compactness [14] and multiband antenna design [15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

An Inset-Fed Rectangular Microstrip Patch Antenna With Multiple Split Ring Resonator Loading for Wlan and Rf-Id Applications

Selvi¹,

Pandeeswari²,

Selvan³

2018

Abstract-In this paper, the analysis and design of a compact Multiple Split Ring Resonator (MSRR) inspired microstrip rectangular patch antenna is presented. The MSRR is used with four rings. The size of the antenna is 25 × 31 × 1.6 mm 3 realized on a low cost FR4 substrate. The proposed rectangular microstrip patch antenna operates at the resonant frequency of 5.88 GHz prior to MSRR inclusion. The antenna characteristics are studied before and after inclusion of metamaterial. After including MSRRs at appropriate places, the proposed MSRR antenna induces a new resonant frequency of 2.78 GHz. In addition to rectangular patch's fundamental resonance, the additional resonance is obtained at 2.78 GHz, thus, exhibits dual bands. Hence, MSRR loading antenna attains a bandwidth of 197 MHz at 2.78 GHz and 703 MHz at 5.88 GHz. The prototype of the proposed antenna is fabricated and measured. Simulated results are verified with the measured ones. This proposed antenna can be effectively utilized for WLAN and RF-ID applications. Parametric studies are illustrated to yield the desired frequency bands. Equivalent circuit model analysis of the MSRR loading is determined. Band characteristics of split ring structure are used to determine the negative permeability characteristics.