# Implications of Metamaterial on Ultra-Wide Band Microstrip Antenna Performance

^{*}

## Abstract

**:**

## 1. Introduction

## 2. Antenna Design

## 3. Metamaterials Design

#### 3.1. Circular SRR (C-SRR) and Square SRR (S-SRR) Design

#### 3.2. Circular and Square SRR Design Analysis

## 4. Antennas Implemented with Metamaterials

#### 4.1. Implementation of Circular-SRR

#### 4.2. C-SRR and Ring Rotation

#### 4.3. Implementation of Square-SRR

## 5. Conclusions

## Author Contributions

## Funding

## Conflicts of Interest

## References

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**Figure 20.**Different number of C-SRR on the back of the antenna. Arrays of (

**a**) 1 × 1 (

**b**) 1 × 2 (

**c**) 1 × 3 (

**d**) 3 × 1 (

**e**) 3 × 2 (

**f**) 3 × 3.

**Figure 29.**S

_{11}for the antenna of shifted C-SRR and inner ring rotation horizontally and vertically.

**Figure 39.**Implementation of S-CRR arrays. (

**a**) 2 × 1 (

**b**) 2 × 2 (

**c**) 2 × 3 (

**d**) 2 × 4 (

**e**) 2 × 5 (

**f**) 3 × 4 (

**g**) 4 × 4 (

**h**) 4 × 5.

Part | Length (mm) | Part | Length (mm) |
---|---|---|---|

L1 | 45.00 | L9 | 4.900 |

L2 | 11.00 | L10 | 2.650 |

L3 | 2.651 | L11 | 7.680 |

L4 | 4.130 | W1 | 31.00 |

L5 | 2.900 | W2 | 9.000 |

L6 | 2.000 | W3 | 8.480 |

L7 | 2.650 | W4 | 1.030 |

L8 | 2.900 | W5 | 3.920 |

Ellipse | Major Radius (mm) | Ration |
---|---|---|

A | 15.0 | 1 |

B | 7.42 | 1.5 |

C | 6.89 | 1.5 |

D | 5.30 | 1.5 |

Circular SRR | Square SRR | ||
---|---|---|---|

The Unit Cell Parameters | Value (mm) | The Unit Cell Parameters | Value (mm) |

$\mathrm{Ring}\text{}\mathrm{width}\text{}(\mathit{c}$) | 0.7 | $\mathrm{Ring}\text{}\mathrm{width}\text{}(c$) | 0.5 |

$\mathrm{Ring}\text{}\mathrm{thickness}\text{}(\mathit{h}$) | 37 µm | $\mathrm{Ring}\text{}\mathrm{thickness}\text{}(t$) | 35 µm |

$\mathrm{Inter}-\mathrm{ring}\text{}\mathrm{spacing}\text{}(\mathit{d}$) | 0.2 | $\mathrm{Inter}-\mathrm{ring}\text{}\mathrm{spacing}\text{}(d$) | 0.2 |

$\mathrm{Split}\text{}\mathrm{gap}\text{}(\mathit{g}$) | 0.2 | $\mathrm{Split}\text{}\mathrm{gap}\text{}(g$) | 0.8 |

$\mathrm{Substrate}\text{}\mathrm{thickness}\text{}(\mathit{t}$) | 1.27 | $\mathrm{Substrate}\text{}\mathrm{thickness}\text{}(h$) | 1.27 |

$\mathrm{Inner}\text{}\mathrm{ring}\text{}\mathrm{radius}\text{}(\mathit{r}$) | 2.2 | $\mathrm{Square}\text{}\mathrm{half}\text{}\mathrm{side}\text{}({a}_{ext}$) | 2.6 |

Case | C-SRR No. | Frequency Bandwidth (GHz) | Return Loss (dB) |
---|---|---|---|

a | 1 | 3.5–9 | −42 |

b | 2 on y-axis | 3.5–8 | −49.65 |

c | 3 on y-axis | 3.2–8.2 | −40 |

d | 3 on x-axis | 2.2–8 | −34.8 |

e | 3 × 2 | 2.2–8 | −33.74 |

f | 3 × 3 | 2.8–8 | −45.7 |

Case | Array | Bandwidth (GHz) | Rejected Bands/Freq. (GHz) |
---|---|---|---|

a | 2 × 1 | 2.2–9 | 5.6 |

b | 2 × 2 | 2.2–9 | - |

c | 2 × 3 | 2.2–8 | 5.6 |

d | 2 × 4 | 2.2–8 | 5.6 |

e | 2 × 5 | 2.2–8 | 5.6 |

f | 3 × 4 | 2.2–10 | 4.85–5.8 |

g | 4 × 4 | 2.2–10 | 4.85–5.8 |

h | 4 × 5 | 2.2–10 | 4.85–5.8 |

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**MDPI and ACS Style**

Serria, E.A.; Hussein, M.I. Implications of Metamaterial on Ultra-Wide Band Microstrip Antenna Performance. *Crystals* **2020**, *10*, 677.
https://doi.org/10.3390/cryst10080677

**AMA Style**

Serria EA, Hussein MI. Implications of Metamaterial on Ultra-Wide Band Microstrip Antenna Performance. *Crystals*. 2020; 10(8):677.
https://doi.org/10.3390/cryst10080677

**Chicago/Turabian Style**

Serria, Elham A., and Mousa I. Hussein. 2020. "Implications of Metamaterial on Ultra-Wide Band Microstrip Antenna Performance" *Crystals* 10, no. 8: 677.
https://doi.org/10.3390/cryst10080677