In this report three staircase UWB antennae with WLAN band notch characteristic, each having different ground planes, are presented. These include a Co-Planar Waveguide-fed antenna, a Transmission Line-fed antenna with partial ground plane having a Defected Ground Structure (DGS) and a Transmission Line-fed antenna with slotted ground plane. All the band-notched antennae have rejection characteristics at 5 GHz WLAN band (5.15GHz to 5.35GHz and 5.725GHz to 5.825 GHz) while the antenna with slotted ground plane rejects the 4.9GHZ WLAN band (4.94GHz to 4.99GHz) as well. In all the three antennae the WLAN band is notched by embedding a U-shaped slot in the transmission line.
The proposed antennae are carefully designed, simulated and tested in order to fulfill the UWB antennae’s pre-defined criteria. The Simulated and Measured results are found to be in good agreement which show the validity of the suggested designs.
Since the commencement of human civilization, humankind attempts to communicate with each other. It is the process of communication, namely the sharing of information, emotions and feelings that has made the mankind the sterling creation of God. It all started with gestures of hands and sounds produced by the vocal cords and gradually evolved into wired and wireless communication now.
The orthodox wireless systems were long-range narrowband systems, but in order to use the available spectrum, now, UWB (Ultra-Wideband) short-range systems are being used which consume low power and built using low-priced digital components. The Microstrip Antennae are designed to implement UWB systems, because they show effective results for broadband antennae. Ultra-wideband (UWB) antennae are by far the most essential elements for UWB systems. With the launch of the 3.1GHz to 10.6GHz band, applications for short-range and high-bandwidth portable gadgets are major research areas in UWB systems. Consequently, the acknowledgment of UWB antennas in printed-circuit systems within comparatively small substrate areas is of major significance.
Inhaltsverzeichnis (Table of Contents)
- Chapter 1 Introduction
- 1.1 Overview
- 1.2 Problem Statement
- 1.3 Objective
- 1.4 Methodology
- 1.5 Compilation of Book
- Chapter 2 Ultra WideBand Technology
- 2.1 Introduction to Antennae
- 2.2 Parameters of Antennae
- 2.3 Types of Antennae
- 2.3.1 Wire Antenna
- 2.3.2 Aperture Antenna
- 2.3.3 Array Antenna
- 2.3.4 Lens Antenna
- 2.3.5 Reflector Antenna
- 2.3.6 Microstrip Patch Antenna
- 2.4 Principles of UWB Technology
- 2.4.1 General Overview
- 2.4.2 Introduction to Ultra Wideband Antennae
- 2.4.3 Working of UWB Technology
- 2.4.4 Advantages of Ultra WideBand Technology
- 2.4.5 Disadvantages of Ultra WideBand Technology
- 2.5 Existing UWB Antennae with Band Notch Designs
- Chapter 3 Co-Planar Waveguide-Fed UWB Antenna with 5GHz WLAN Band Notch Characteristics
- 3.1 Introduction
- 3.2 Design of the Proposed CPW-Fed Antenna
- 3.2.1 Ultra WideBand (Without U-Shape Slot)
- 3.2.2 Ultra WideBand Antenna with WLAN Notch
- 3.3 Simulated Results of the Proposed Antenna
- 3.3.1 VSWR with WLAN Notch
- 3.3.2 Return Loss with WLAN Notch
- 3.3.3 Radiation Patterns
- 3.3.4 Current Distribution
- 3.3.5 Gain vs. Frequency Plot
- 3.4 Measured Results of the Proposed Antenna
- Chapter 4 Transmission Line-Fed UWB Antenna with 5GHz WLAN Band Notch using Partial Ground Plane
- 4.1 Introduction
- 4.2 Design of the Proposed TX Line-Fed Antenna with Partial Ground Plane
- 4.2.1 Ultra WideBand without U-Shape Slot
- 4.2.2 Ultra WideBand with WLAN Notch
- 4.3 Simulated Results of the Proposed Antenna
- 4.3.1 VSWR with WLAN Notch
- 4.3.2 Return Loss with WLAN Notch
- 4.3.3 Radiation Patterns
- 4.3.4 Current Distribution
- 4.3.5 Gain vs. Frequency Plot
- 4.4 Measured Results of the Proposed Antenna
- Chapter 5 Transmission Line-Fed Slotted Ground Plane UWB Antenna with 4.9GHz and 5GHz WLAN Band Notch Characteristics
- 5.1 Introduction
- 5.2 Design of the Proposed TX Line-Fed Antenna with Slotted Ground Plane
- 5.2.1 Ultra WideBand (Without U-Shape Slot)
- 5.2.2 Ultra WideBand With WLAN Notch
- 5.3 Simulated Results of the Proposed Antenna
- 5.3.1 VSWR with WLAN Notch
- 5.3.2 Return Loss with WLAN Notch
- 5.3.3 Radiation Patterns
- 5.3.4 Current Distribution
- 5.3.5 Gain vs. Frequency Plot
- 5.4 Measured Results of the Proposed Antenna
- Chapter 6 UWB Applications
- 6.1 Introduction
- 6.2 UWB in Communications and Sensors
- 6.2.1 Low Data Rate
- 6.2.2 High Data Rate
- 6.2.3 Home Network Appliances
- 6.3 UWB Technology in WBAN
- 6.4 Position Location and Tracking
- 6.5 Radars
- Chapter 7 Conclusion and Future Work
- 7.1 Conclusion
- 7.2 Future Work
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
The main objective of this thesis is to design Ultra Wideband (UWB) antennae that have a notch in the Wireless Local Area Network (WLAN) band. The thesis aims to achieve this objective by proposing and designing three different types of UWB antennae, including a Co-Planar Waveguide (CPW)-fed antenna, a Transmission Line-fed antenna with partial ground plane, and a Transmission Line-fed antenna with slotted ground plane. The design and performance of these antennae are evaluated through simulations and fabrications.
- Design and implementation of UWB antennae
- Notching of the WLAN band in UWB antennae to avoid interference
- Evaluation of antenna performance through simulations and fabrications
- Analysis of antenna parameters, including bandwidth, gain, efficiency, and radiation patterns
- Exploration of potential applications of UWB antennae
Zusammenfassung der Kapitel (Chapter Summaries)
Chapter 2 provides an introduction to UWB technology and its applications. It also discusses the different types of antennae and their essential parameters, such as radiation pattern, gain, directivity, and return loss. The chapter concludes with a literature review of existing UWB antennae with band notch designs.
Chapter 3 presents the design, simulation, and fabrication results of the proposed CPW-fed UWB antenna with 5GHz WLAN band notch. The chapter analyzes the effects of varying different parameters on antenna performance and presents the simulated results of VSWR, return loss, radiation patterns, current distribution, and gain plots.
Chapter 4 focuses on the design, simulation, and fabrication of the proposed Transmission Line-fed UWB antenna with partial ground plane and 5GHz WLAN band notch. The chapter examines the effects of introducing Defected Ground Structure (DGS) in the partial ground plane to enhance the notch characteristics.
Chapter 5 introduces the design, simulation, and fabrication of the proposed Transmission Line-fed UWB antenna with slotted ground plane and notch characteristics at 4.9GHz and 5GHz WLAN bands. The chapter analyzes the effects of varying different parameters on antenna performance, including VSWR, return loss, radiation patterns, current distribution, and gain plots.
Chapter 6 explores the potential applications of the proposed UWB antennae in various domains, including communications, sensors, position location and tracking, and radars.
Schlüsselwörter (Keywords)
The primary keywords and focus topics of the text are: Ultra Wideband (UWB), antenna design, WLAN band notch, Co-Planar Waveguide (CPW), Transmission Line, partial ground plane, slotted ground plane, Defected Ground Structure (DGS), bandwidth, gain, efficiency, radiation pattern, current distribution, simulations, fabrications, applications, communications, sensors, position location and tracking, radars.
- Citation du texte
- Zeeshan Ahmed (Auteur), 2013, The WLAN Band-Notching of Ultra WideBand Antennas, Munich, GRIN Verlag, https://www.grin.com/document/334224
