A miniature UWB planar monopole antenna with 5-GHz band-rejection filter and the time-domain characteristics
TL;DR: In this article, a planar monopole antenna with a staircase shape and small volume (25times26times1 mm3) was proposed for ultrawideband (UWB) systems.
Abstract: A planar monopole antenna with a staircase shape and small volume (25times26times1 mm3) is proposed in this paper. With the use of a half-bowtie radiating element, the staircase-shape, and a modified ground plane structure, the proposed antenna has a very wide impedance bandwidth measured at about 11.6 GHz (2.9-14.5 GHz, bandwidth ratio about 1:5) below VSWR 2 including the WLAN band notched in the vicinity of 5 GHz. An omnidirectional radiation pattern is obtained. The group delay which is an indication of linearity between two proposed antennas is less than 1 ns. The electrical characteristics in terms of frequency and time domains and physical ones of the proposed antenna make it attractive for use in ultrawideband (UWB) systems
Citations
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TL;DR: In this paper, a planar ultrawideband (UWB) antenna with 3.4/5.5 GHz dual band-notched characteristics is proposed, which consists of a beveled rectangular metal patch and a 50 Omega coplanar waveguide (CPW) transmission line.
Abstract: We propose a compact planar ultrawideband (UWB) antenna with 3.4/5.5 GHz dual band-notched characteristics. The antenna consists of a beveled rectangular metal patch and a 50 Omega coplanar waveguide (CPW) transmission line. By etching two nested C-shaped slots in the patch, band-rejected filtering properties in the WiMAX/WLAN bands are achieved. The proposed antenna is successfully simulated, designed, and measured showing broadband matched impedance, stable radiation patterns and constant gain. An equivalent circuit model of the proposed antenna is presented to discuss the mechanism of the dual band-notched UWB antenna. A UWB antenna and a single band-notched one are also provided for references.
448 citations
Cites background from "A miniature UWB planar monopole ant..."
...These UWB antennas with filtering property at the 5–6 GHz band have been proposed not only to mitigate the potential interferences but also to remove the requirement of an extra bandstop filter in the system [4], [5]....
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TL;DR: In this article, a compact printed ultrawideband (UWB) slot antenna for MIMO/diversity applications is presented, which consists of two modified coplanar waveguides (CPWs) feeding staircase-shaped radiating elements for orthogonal radiation patterns.
Abstract: A novel compact printed ultrawideband (UWB) slot antenna for MIMO/diversity applications is presented in this letter. The antenna consists of two modified coplanar waveguides (CPWs) feeding staircase-shaped radiating elements for orthogonal radiation patterns, where a rectangle stub is placed at 45° between the CPW to ensure high isolations. By etching two split-ring resonator (SRR) slots on the radiators respectively, the band-notched property is achieved. Results show that this antenna meets a 10-dB impedance bandwidth and 15 dB isolation from 2.5 to 12 GHz, with a notched band at 5.5 GHz. The measurements of the radiation patterns and envelope correlation coefficient (ECC) denote that the antenna is suitable for multiple-input-multiple-output (MIMO)/diversity systems. Furthermore, it has a compact size of 48 × 48 mm2, which has been significantly reduced, and it is a good candidate for portable devices.
261 citations
Cites background from "A miniature UWB planar monopole ant..."
...radiating elements, both fed by coplanar waveguides, which obtain more resonant frequencies and achieve UWB characteristics [14]....
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TL;DR: In this paper, two CPW-fed elliptical monopoles were fabricated on liquid crystal polymer (LCP) with reconfigurable rejection band (band-notch) characteristics in the frequency range between 5 and 6 GHz.
Abstract: Two CPW-fed elliptical monopoles were fabricated on liquid crystal polymer (LCP) with reconfigurable rejection band (band-notch) characteristics in the frequency range between 5 and 6 GHz. The first antenna uses a lambda/2 long, U-shaped slot and the second antenna uses two symmetrically placed lambda/4 long, inverted L-shaped stubs as resonating elements. Microelectromechanical system (MEMS) switches are used to activate and deactivate the resonating elements without the need of dc bias lines due to a novel design of the switch geometry. Transmission line models and surface current distributions are used to explain the effect of the added resonating elements. Reflection coefficient radiation pattern and gain measurements are presented to verify the design concepts featuring a very satisfactory performance.
193 citations
Cites background or methods from "A miniature UWB planar monopole ant..."
...The directions of the current in the inner and outer side of the slot are opposite and they cancel each other as explained in detail in [14], [19]....
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...However, the technique that was adopted by most researchers was the integration of a U-shaped slot on a monopole [11]–[14] or the integration of stubs with the monopole [15]....
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TL;DR: In this paper, a band-notched ultrawideband (UWB) antenna is presented and the notched-band characteristic is realized by a compact coplanar waveguide resonant cell (CCRC).
Abstract: In this letter, a band-notched ultrawideband (UWB) antenna is presented and the notched-band characteristic is realized by a compact coplanar waveguide (CPW) resonant cell (CCRC). The antenna with a total size of 46 mm $,times,$30 mm operates in a band from 2.67 to over 12 GHz, and shows omnidirectional radiation patterns. Measurements indicate that the antenna presents a notched band from 5.10 to 5.94 GHz for $ VSWR ge 3:1$, which covers the wireless local area network (WLAN) band. The time-domain behaviors and the CCRC are discussed and the group delay is given experimentally. Also, parametric studies are performed numerically in the end.
181 citations
Cites background from "A miniature UWB planar monopole ant..."
...Recently, a miniature UWB planar monopole antenna with 5-GHz band-rejection characteristics is reported [17], which was investigated its characteristics not only in frequency domain but also in time domain; however, it presents a complicated structure....
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References
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Book•
01 Jan 1982
TL;DR: The most up-to-date resource available on antenna theory and design as mentioned in this paper provides an extended coverage of ABET design procedures and equations making meeting ABET requirements easy and preparing readers for authentic situations in industry.
Abstract: The most-up-to-date resource available on antenna theory and design Expanded coverage of design procedures and equations makes meeting ABET design requirements easy and prepares readers for authentic situations in industry New coverage of microstrip antennas exposes readers to information vital to a wide variety of practical applicationsComputer programs at end of each chapter and the accompanying disk assist in problem solving, design projects and data plotting-- Includes updated material on moment methods, radar cross section, mutual impedances, aperture and horn antennas, and antenna measurements-- Outstanding 3-dimensional illustrations help readers visualize the entire antenna radiation pattern
14,065 citations
"A miniature UWB planar monopole ant..." refers background in this paper
...Although the bowtie antenna is one of the promising techniques for UWB antenna systems [ 6 ], it is not sufficient to cover the UWB frequency band....
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01 Jan 2007
570 citations
"A miniature UWB planar monopole ant..." refers background in this paper
...receiving devices can be miniature effectively [9], [10]....
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Book•
01 Jan 2004TL;DR: This chapter discusses the development of UWB signals and systems, and proposes proposals for UWB channel models and methods, as well as some of the challenges faced by the system and its users.
Abstract: Preface. Acknowledgments. List of Figures. List of Tables. Introduction. I.1 Ultra wideband overview. I.2 A note on terminology. I.3 Historical development of UWB. I.4 UWB regulation overview. I.5 Key benefits of UWB. I.6 UWB and Shannon's theory. I.7 Challenges for UWB. I.8 Summary. 1 Basic properties of UWB signals and systems. 1.1 Introduction. 1.2 Power spectral density. 1.3 Pulse shape. 1.4 Pulse trains. 1.5 Spectral masks. 1.6 Multipath. 1.7 Penetration characteristics. 1.8 Spatial and spectral capacities. 1.9 Speed of data transmission. 1.10 Cost. 1.11 Size. 1.12 Power consumption. 1.13 Summary. 2 Generation of UWB waveforms. 2.1 Introduction. 2.2 Gaussian waveforms. 2.3 Designing waveforms for specific spectral masks. 2.4 Practical constraints and effects of imperfections. 2.5 Summary. 3 Signal-processing techniques for UWB systems. 3.1 The effects of a lossy medium on a UWB transmitted signal. 3.2 Time domain analysis. 3.3 Frequency domain techniques. 3.4 UWB signal-processing issues and algorithms. 3.5 Detection and amplification. 3.6 Summary. 4 UWB channel modeling. 4.1 A simplified UWB multipath channel model. 4.2 Path loss model. 4.3 Two-ray UWB propagation model. 4.4 Frequency domain autoregressive model. 4.5 IEEE proposals for UWB channel models. 4.6 Summary. 5 UWB communications. 5.1 Introduction. 5.2 UWB modulation methods. 5.3 Other modulation methods. 5.4 Pulse trains. 5.5 UWB transmitter. 5.6 UWB receiver. 5.7 Multiple access techniques in UWB. 5.8 Capacity of UWB systems. 5.9 Comparison of UWB with other wideband communication systems. 5.10 Interference and coexistence of UWB with other systems. 5.11 Summary. 6 Advanced UWB pulse generation. 6.1 Hermite pulses. 6.2 Orthogonal prolate spheroidal wave functions. 6.3 Wavelet packets in UWB PSM. 6.4 Summary. 7 UWB antennas and arrays. 7.1 Antenna fundamentals. 7.2 Antenna radiation for UWB signals. 7.3 Suitability of conventional antennas for the UWB system. 7.4 Impulse antennas. 7.5 Beamforming for UWB signals. 7.6 Radar UWB array systems. 7.7 Summary. 8 Position and location with UWB signals. 8.1 Wireless positioning and location. 8.2 GPS techniques. 8.3 Positioning techniques. 8.4 Time resolution issues. 8.5 UWB positioning and communications. 8.6 Summary. 9 Applications using UWB systems. 9.1 Military applications. 9.2 Commercial applications. 9.3 UWB potentials in medicine. 9.4 Summary. 10 UWB communication standards. 10.1 UWB standardization in wireless personal area networks. 10.2 DS-UWB proposal. 10.3 MB-OFDM UWB proposal. 10.4 A short comment on the term 'impulse radio'. 10.5 Summary. 11 Advanced topics in UWB communication systems. 11.1 UWB ad-hoc networks. 11.2 UWB sensor networks. 11.3 Multiple inputs multiple outputs and space-time coding for UWB systems. 11.4 Self-interference in high-data-rate UWB communications. 11.5 Coexistence of DS-UWB with Wi-Max. 11.6 Vehicular radars in the 22-29 GHz band. 11.7 Summary. References. Index.
501 citations
15 Feb 2006
470 citations
Book•
07 Jun 2004
TL;DR: In this paper, the authors present the Multipath Model for IEEE P802.15.3 and the Free Space Transmission of Pulses (FSTP) for UWB signals.
Abstract: Dedication.Preface.Acknowledgements.1. History.2. The Regulatory Climate.3. UWB in Standards.4. Generating and Transmitting UWB Signals.5. Radiation of UWB Signals.6. Propagation of UWB Signals.7. Receiving UWB Signals.8. UWB System Limits and Capacity.9. Applications and Future Directions.Appendix A: Excerpts from the FCC First Report and Order.Appendix B: Summary of Multipath Model for IEEE P802.15.3a.Appendix C: Free-space Transmission of Pulses.Appendix D: Glossary.Index.
354 citations