Multi-Band Multi-Mode Microstrip Circular Patch Antenna Loaded With Metamaterial Structures

Cao, Wenquan; Liu, A. J.; Zhang, B.-N.; Tang, Yu; Guo, Daosheng; Wei, Yang; Zhang, Qian

doi:10.1080/09205071.2012.710377

Cited by 17 publications

(14 citation statements)

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“…In order to make the working principle clear, several conclusions deduced from the previous works [8,10,11] are listed as follows: 1. The mushroom structure in the middle layer is placed to excite the multi-frequency multi-mode function and the inner part of the structure has little effect on the radiation characteristics of fundamental modes.…”

Section: Design Considerationmentioning

confidence: 99%

“…However, a center-fed method may result in a poor impedance matching. After optimizing the notches size determined by R4 and alpha3, CP property can be realized for the patch mode as well as a good impedance matching described in [11] is maintained.…”

Section: Design Considerationmentioning

confidence: 99%

“…Nevertheless, the polarization mode was single. Moreover, a single feed multi-band and multi-mode microstrip circular patch antenna loaded with metamaterial structures was designed in [11]. However, no attention was paid to the polarization characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…The design is based on the structure mentioned in [11]. CP property for omnidirectional zeroth-order resonance (first monopole mode) is achieved by employing curved branches around the circular radiating patch.…”

Section: Introductionmentioning

confidence: 99%

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Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure

et al. 2014

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A notch-etched circular patch antenna with dual polarized characteristic is presented in this paper. By loading metamaterial structures under the circular patch with four curved branches, two monopole modes with omnidirectional radiation patterns in the azimutal plane and one patch mode with patch-like radiation pattern in the vertical plane are excited. Despite the circular polarization (CP) realized by the four curved branches, it is obtained by introducing perturbations on the circular radiating patch as well. Besides, linear polarization (LP) for the second monopole mode stays unchangeable. To validate the analysis mentioned above, the antenna is fabricated and measured. The measured results show a good agreement with the simulated ones.

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Section: Design Considerationmentioning

confidence: 99%

Section: Design Considerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure

et al. 2014

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“…CRLH TL theory is introduced to analyze this antenna. Based on this metamaterial structure, microstrip antennas with multi-band dual-mode and dual-polarization property are designed and realized accordingly [12,13]. However, the bandwidths of these antenna are limited to about 1% ∼ 2%.…”

Section: Introductionmentioning

confidence: 99%

Novel Phase-Shifting Characteristic of CRLH Tl and Its Application in the Design of Dual-Band Dual-Mode Dual-Polarization Antenna

Cao¹,

Zhang²,

Liu³

et al. 2012

PIER

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Abstract-The phase-shifting characteristic of a novel composite right/left handed transmission line (CRLH TL) for two frequency points is analyzed in this paper. Samples of (90 • , 0 • ) and (180 • , 0 • ) phase-shifting TLs for two frequency points (f 1 , f 2 ) are deigned and the total length of the CRLH TLs has decreased by more than 77% compared to the conventional microstrip lines. Then a four way power divider made by three Wilkinson power dividers and interconnected with the (90 • , 0 • ) and (180 • , 0 • ) phase-shifting TLs is designed to feed an antenna with two different operating modes at two different frequency bands. Four radiating patches arranging symmetrically in a loop are printed in an upper substrate and connected with the four outputs of the feed network by four copper pins. When the four rectangular patches are excited by four sources with equal amplitude and phase at f 1 , metamaterial antenna with conical beam and linear polarization (LP) is achieved; while four sources with equal amplitude but 90 • phase difference for each adjacent output at f 2 leads to wideband antenna with broadside beam and circular polarization (CP). One antenna prototype with dual-band dual-mode dual-polarization property is fabricated and good agreements between simulation and measurement results are obtained. This single-feed patch antenna is valuable in wireless communications for its radiation pattern selectivity and polarization diversity.

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Compact dual‐band dual‐mode circular patch antenna with broadband unidirectional linearly polarised and omnidirectional circularly polarised characteristics

Cao

2016

IET Microwaves, Antennas & Propagation

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A novel probe‐feed single‐layer circular patch antenna with dual‐band dual‐mode dual polarisation is proposed in this study. By using modified mushroom structure, dual‐band dual‐mode characteristic is realised as former designs. Due to the loading structure including four curved patches added around the circular radiating patch, bandwidth is broadened for the patch mode (n = 1 mode) with unidirectional linearly polarised characteristics at the upper frequency band. By loading with four curved branches in the ground plane, circularly polarised property for the dipole mode (n = 0 mode) with omnidirectional radiation patterns is achieved at the lower frequency band. Parameter analysis is made to study this antenna and one prototype is fabricated to confirm the property. Moreover, the measured results are obtained with −10 dB impedance bandwidths of 227.5 MHz (5.1% at the centre frequency of 4.42 GHz) and 857.5 MHz (14.9% at the centre frequency of 5.74 GHz), and maximum gain of 1.1 and 7.1 dB for the dipole mode and patch mode, respectively. With the advantages of simple structure, wide bandwidth, radiation pattern selectivity and polarisation diversity, this antenna concept is valuable in wireless communications.

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Multi-Band Multi-Mode Microstrip Circular Patch Antenna Loaded With Metamaterial Structures

Cited by 17 publications

References 0 publications

Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure

Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure

Novel Phase-Shifting Characteristic of CRLH Tl and Its Application in the Design of Dual-Band Dual-Mode Dual-Polarization Antenna

Compact dual‐band dual‐mode circular patch antenna with broadband unidirectional linearly polarised and omnidirectional circularly polarised characteristics

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