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Wide-band antennas

Xem 1-11 trên 11 kết quả Wide-band antennas
  • In the last 40 years, the microstrip antenna has been developed for many communication systems such as radars, sensors, wireless, satellite, broadcasting, ultra-wideband, radio frequency identifications (RFIDs), reader devices etc. The progress in modern wireless communication systems has dramatically increased the demand for microstrip antennas. In this book some recent advances in microstrip antennas are presented.

    pdf0p cucdai_1 20-10-2012 80 12   Download

  • Ultra wideband (UWB) has advanced and merged as a technology, and many more people are aware of the potential for this exciting technology. The current UWB field is changing rapidly with new techniques and ideas where several issues are involved in developing the systems. Among UWB system design, the UWB RF transceiver and UWB antenna are the key components. Recently, a considerable amount of researches has been devoted to the development of the UWB RF transceiver and antenna for its enabling high data transmission rates and low power consumption.

    pdf370p cucdai_1 19-10-2012 47 8   Download

  • This book explores both the state-of-the-art and the latest achievements in UWB antennas and propagation. It has taken a theoretical and experimental approach to some extent, which is more useful to the reader. The book highlights the unique design issues which put the reader in good pace to be able to understand more advanced research.

    pdf0p cucdai_1 19-10-2012 42 6   Download

  • In this article, propose a novel wideband VHF antenna to improve the deep penetration for the impulse GPR system. Unlike the above bow ties antenna, the antenna is based on Lemniscate curve to achieve a good radiation.

    pdf12p sansan2 26-05-2018 16 1   Download

  • In addition, the performance and the efficiency of the proposed method are not affected significantly by the correlation between the received signals, which permits us to estimate not only wideband incoherent signals but also wideband coherent signals. The simulation results for DOA estimation of wideband signals using the proposed method will be shown and analyzed to verify its performance.

    pdf10p thithizone 16-07-2019 4 0   Download

  • In this paper, a metamaterial antenna is designed by using coplanar waveguide (CPW) feeding to obtain wideband and compact size. The Multiple-Input Multiple-Output (MIMO) antenna is constructed by placing side-by-side two single metamaterial antennas which are based on the modified composite right/left handed (CRLH) model.

    pdf9p vimariecurie2711 30-07-2019 6 0   Download

  • Mobile and Wireless Communications have been one of the major revolutions of the late twentieth century. We are witnessing a very fast growth in these technologies where mobile and wireless communications have become so ubiquitous in our society and indispensable for our daily lives. The relentless demand for higher data rates with better quality of services to comply with state-of-the art applications has revolutionized the wireless communication field and led to the emergence of new technologies such as Bluetooth, WiFi, Wimax, Ultra wideband, OFDMA.

    pdf0p 123859674 30-06-2012 68 18   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Millimeter-Wave Ultra-Wideband Six-Port Receiver Using Cross-Polarized Antennas

    pdf7p sting08 20-02-2012 40 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Influence of the Antennas on the Ultra-Wideband Transmission

    pdf10p dauphong20 11-03-2012 27 2   Download

  • This paper presents the design of a wideband circularly polarized E-shaped patch antenna for 2.4-GHz wireless local area networks (WLAN) applications. The proposed antenna is a modified form of the conventional circularly polarized E-shaped patch antenna.

    pdf7p vixyliton2711 17-04-2019 16 1   Download

  • RF/IF Conversion Segment Tradeoffs This chapter introduces the system-level design tradeoffs of the RF conversion segment. Software radios require wideband RF/IF conversion, large dynamic range, and programmable analog signal processing parameters. In addition, a high-quality SDR architecture includes specific measures to mitigate the interference readily generated by SDR operation. I. RF CONVERSION ARCHITECTURES The RF conversion segment of the canonical software radio is illustrated in Figure 8-1. The antenna segment may provide a single element for both transmission and reception....

    pdf24p tienvovan 11-09-2010 79 7   Download

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