An Investigation Of Planar Monopole Antennas For Modern Portable Applications
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| Total Pages | : |
| Release | : 2001 |
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Current trends in portable and mobile communications are towards greater numbers of different systems often with wider bandwidths, operating within a single device. Antenna systems for these devices need to be capable of operating over a wide frequency range or multiple frequency bands, typically between 900MHz and 6GHz (e.g. GSM, IMT-2000, Wi-Fi and WiMax). Portable and mobile applications also require antennas to be optimised with respect to radiation pattern, efficiency and physical size. A greater understanding of the characteristics and design challenges of broadband and multi-band antennas forms the core motivation of this work. The antennas developed as part of this work are all related to the planar monopole antenna: classical planar monopole antennas and printed planar monopoles. A number of techniques to extend the impedance bandwidth of the planar monopole antenna such as bevelling were applied, producing impedance bandwidth ratios up to 10:1 in some cases (suitable for ultra-wideband applications), and multi-band responses in others. Techniques to reduce the antenna size or profile were also implemented. These included the use of short circuits between the antenna and its groundplane, and folding. These techniques achieved significant reductions in antenna height (up to 50%) or in lower edge frequency (typically 30%). A novel corrugation technique was also used to reduce antenna height by up to 30%. Improvements in the omni-directionality and stability of the radiation characteristics have been achieved by modifying the antenna geometry. Very low profile printed planar monopoles, implemented in both microstrip fed and single-sided co-planar waveguide fed formats, are also investigated. Fractional impedance bandwidths in excess of 100% as well as multi-band configurations with potential reconfigurable applications were achieved with these antennas.
| Author | : Zhi Ning Chen |
| Publisher | : John Wiley & Sons |
| Total Pages | : 258 |
| Release | : 2006-05-01 |
| Genre | : Technology & Engineering |
| ISBN | : 047087175X |
The increasing demand for wireless communications has revolutionised the lifestyle of today’s society and one of the key components of wireless technology is antenna design. Broadband planar antennas are the newest generation of antennas boasting the attractive features required, such as broad operating bandwidth, low profile, light weight, low cost and ease of integration into arrays or Radio Frequency (RF) circuits, to make them ideal components of modern communications systems. Research into small and broadband antennas has been spurred by the rapid development of portable wireless communication devices such as cell phones, laptops and personal digital assistants. This all-encompassing volume, Broadband Planar Antennas: Design and Applications, systematically describes the techniques for all planar antennas from microstrip patch antennas, suspended plate antennas and planar inverted-L/F antennas to planar dipole antennas. Also discussed are some of the most recent outcomes such as broadband antenna issues in promising ultra-wideband applications. Clearly describes the fundamentals of planar antennas and categorises them according to their radiation characteristics Introduces the advanced progress in broadband planar antennas for modern wireless communications Includes a wealth of case studies, design guidelines, figures and tables This text is essential reading for antenna, RF and microwave engineers and manufacturers within the telecommunications industry. Its highly accessible approach will also appeal to researchers, postgraduate students and academic lecturers.
| Author | : Dr. Koduri Sreelakshmi |
| Publisher | : Book Rivers |
| Total Pages | : 125 |
| Release | : 2023-09-17 |
| Genre | : Biography & Autobiography |
| ISBN | : 9358426438 |
| Author | : Praveen Kumar Malik |
| Publisher | : CRC Press |
| Total Pages | : 365 |
| Release | : 2021-10-21 |
| Genre | : Technology & Engineering |
| ISBN | : 1000436101 |
This comprehensive reference text discusses fundamental concepts, applications, design techniques, and challenges in the field of planar antennas. The text focuses on recent advances in the field of planar antenna design and their applications in various fields of research, including space communication, mobile communication, wireless communication, and wearable applications. This resource presents planar antenna design concepts, methods, and techniques to enhance the performance parameters and applications for IoTs and device-to-device communication. The latest techniques used in antenna design, including their structures defected ground, MIMO, and fractal design, are discussed comprehensively. The text will be useful for senior undergraduate students, graduate students, and academic researchers in fields including electrical engineering, electronics, and communication engineering.
| Author | : Zhi Ning Chen |
| Publisher | : John Wiley & Sons |
| Total Pages | : 304 |
| Release | : 2007-04-04 |
| Genre | : Technology & Engineering |
| ISBN | : 0470319658 |
Offers a comprehensive and practical reference guide to antenna design and engineering for portable devices Antennas are often the most bulky components in many portable wireless devices such as mobile phones. Whilst the demand for ever smaller and more powerful wireless devices increases, as does the importance of designing and engineering smaller antennas to fit these devices. Antennas for Portable Devices provides a complete and cutting-edge guide to the design and engineering of small antennas for portable electronic devices such as mobile phone handsets, laptop computers, RFID (radio frequency identification), microwave thermal therapies devices, wearable devices, and UWB (ultra-wideband) based consumer devices. The book addresses practical engineering issues that antenna professionals have to deal with. It explains the immediate demands for existing systems; discusses the antenna technology for the latest and emerging applications, and gives comprehensive coverage of hot topics in the wireless industry. Issues including design considerations, engineering design, measurement setup and methodology, and practical applications are all covered in depth. Antennas for Portable Devices: Covers antennas for all modern portable wireless devices from handsets, RFID tags, laptops, wearable sensors, UWB-based wireless USB dongles and handheld microwave treatment devices Explains how to design and engineer applications for miniaturization of antenna technology, utilising practical case studies to provide the reader with an understanding of systems and design skills Links the basic antenna theory, with design methodology, and engineering design Is amply illustrated with numerous figures and data tables of antenna designs to aid understanding Features contributions from industry and research experts in antenna technology and applications This invaluable resource will provide a comprehensive overview of miniaturizing antenna technology for antenna engineers in industry, and R&D organizations, graduate students, consultants, researchers, RF professionals, technical managers, as well as practitioners working in the area of consumer electronics, RF systems, wireless communications, or bio-medical devices.
| Author | : Jayshri Kulkarni |
| Publisher | : CRC Press |
| Total Pages | : 398 |
| Release | : 2023-12-19 |
| Genre | : Technology & Engineering |
| ISBN | : 1003816908 |
Includes designed miniaturized monopole antennas for laptop computers with dual/triple band operations, performance enhancement, wider bandwidth, and increased data rate Explores the design of equivalent circuit diagrams of the proposed antenna. Presents integration of designed antennas into laptop for the validation of desired outcome Identifies and discusses technical challenges and new results related to the design of 5G/WLAN antennas Contains graphical illustration, design steps, detail analysis of each step along with proper justification
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| Release | : 2017 |
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| Author | : Jayshri Kulkarni |
| Publisher | : CRC Press |
| Total Pages | : 501 |
| Release | : 2023-12-19 |
| Genre | : Technology & Engineering |
| ISBN | : 1003816940 |
This work focuses on designing multiband-printed single/Multiple Input Multiple Output (MIMO) CP antennas for WLAN/V2X and NR Sub-6GHz 5G applications. It also delves into the design and implementation of a Four-Port MIMO antenna for wireless applications, addressing theoretical foundations and challenges. Additionally, the book explores critical aspects of software-defined radios (SDR), including modulation, signal processing, radio systems, TX/RX blocks, SDR-enabled phased arrays, and beam hopping techniques, with relevance to 5G, 6G, and IoT applications. Features: • Explores advancements in planar monopole antennas, including bandwidth enhancement techniques. • Analyzes innovative antenna design structures, like miniaturized and conformal monopole antennas; and discusses modeling and implementation. • Spotlights WLAN and Wi-Fi 6/6E antenna design for next-gen laptops with practical insights. • Addresses the use of triple-band antenna arrays for MIMO applications in laptops. • Focuses on planar antenna advancements for diverse wireless bands and applications. • Explores multiband-printed single/MIMO CP antennas for WLAN/V2X and NR Sub-6GHz 5G. • Covers the design and implementation of a Four-Port MIMO antenna for wireless applications, including theoretical foundations and challenges. • Explores SDR, modulation, signal processing, radio systems, TX/RX blocks, SDR-enabled phased arrays, and beam hopping techniques for 5G, 6G, and IoT applications. This book is aimed at graduate students and researchers in electrical and electronic engineering, antennas, and wireless communication systems.
| Author | : Robert A Moody |
| Publisher | : |
| Total Pages | : 170 |
| Release | : 2010 |
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| Author | : Shiban Kishen Koul |
| Publisher | : Springer Nature |
| Total Pages | : 213 |
| Release | : 2022-10-14 |
| Genre | : Technology & Engineering |
| ISBN | : 9811965374 |
This book presents state-of-the-art trends in reconfigurable active and passive planar antennas and their applications in wireless communication systems operating in the frequency band 5-6 GHz. Due to various key features such as multifunction antenna design, compactness, planar nature, and low cost, these technologies are becoming popular for current and future wireless applications. This book discusses different novel antenna designs and their working principles in detail. The modern and future wireless systems require wideband antennas to accommodate various channels in a single band or in separate bands. The carrier aggregation (CA) has been introduced in the modern wireless systems such as LTE-advanced systems and 5G./6G. In CA, a device can use several channels for transmission and reception. The used channels can exist in the same frequency band (intra-band CA) or in distinct bands (inter-band CA). To accommodate more channels, more bandwidth is required within the operating band. For portable devices, circularly polarized (CP) antennas are more advantageous over linearly polarized antennas since in CP antennas, there is low risk of misalignment and, hence encountering interference. Circularly polarized antenna also provides higher link reliability for the portable devices. To provide high data rates, more bandwidth is needed to accommodate more channels. Various multifunction, compact, and wideband antennas for plethora of applications are addressed in detail in this book. The scope of developing reconfigurable active antennas for application in beam switching, beam steering, wireless charging, security systems, etc., is described. This book concludes by giving glimpses of antenna requirements for future wireless communication systems.
