图书馆订阅: Guest
电信和无线电工程

每年出版 12 

ISSN 打印: 0040-2508

ISSN 在线: 1943-6009

SJR: 0.185 SNIP: 0.268 CiteScore™:: 1.5 H-Index: 22

Indexed in

ANALYSIS OF CHARACTERISTICS OF TWO-FREQUENCY (THREE-FREQUENCY) ANTENNAS WITH REACTIVE LOADS

卷 77, 册 2, 2018, pp. 95-112
DOI: 10.1615/TelecomRadEng.v77.i2.10
Get accessGet access

摘要

The results of a theoretical and experimental study of distribution of the complex current amplitude, input impedances, voltage standing wave ratio, and the directional patterns of multifrequency and two-frequency linear microwave wire antennas with quarter-wave coaxial or two-wire shunts and with concentrated reactive loads are presented. As the result of the research it was determined that at a constant size of a quarter-wave shunt attached to the antenna and at different antenna dimensions with respect of the shunt, the antenna can either acquire or lose the multifrequency property. Namely, with the length of the wire rod protruding beyond the shunt equal to an odd number of quarters of the short wave in the upper frequency range the multifrequency mode is obeyed. Otherwise, the multifrequency mode is not respected. The principle of eliminating the above-mentioned drawback and creation of two-frequency antennas for operation with an arbitrary ratio of the compatible frequencies is suggested and experimentally tested. This principle consists in adjusting the electrical length of the wire rod of the antenna that protrudes beyond the shunt by serial connection of the concentrated reactive load into its gap, the value of which must satisfy two conditions–creation of the maximum potential difference in the aperture of the shunt at the upper operating frequency and ensuring the mode of the serial resonance of the antenna at the lower operating frequency. The results of the research are presented in the form of tables and graphs of current distribution, input impedances, VSWR and directional patterns of similar antennas, as well as the values of inductive loads calculated according to the suggested expression and connected into the protruding part of the antenna rod outside the shunt. The proposed method for calculating and optimizing two-frequency antennas for operation with an arbitrary ratio of compatible frequencies was experimentally tested. It is noted that the investigated two-frequency antenna with two-wire linear shunts and with connected inductive loads, is one of the promising options for development of the small-size two-frequency antennas and antenna arrays in the microstrip execution.

将发表的论文

A Slotted Pentagon Shape Quad Band Two-Element Millimeter Wave MIMO Antenna using Theory of Characteristic Modes Parveez Shariff B G, Sameena Pathan, Pallavi R Mane, Tanweer Ali Design and Develop Low power memory controller for GC-eDRAM cell using ICG Shravan Chintam, Kaleem Fatima, Paidimarry Chandra sekhar Lighting up Data: The Future of Wireless Data Transfer with Li-Fi Technology Balaka Biswas, Aryan Nakhale , Aditya Roshan Sinha Design of Implantable Antennas for Biomedical Applications M Satish Kumar, Sivasubramanyam Medasani , Penchala Reddy Sura, Tathababu Addepalli, Jetti Chandra Sekhar Rao, J Prasanth Kumar, B.Y.V.N.R. Swamy, A L Siridhara Diffraction Problem with Time-Varying Boundary Conditions Fatih Erden A Proposed MIMO Antenna Design for Ultra-Wideband THz Applications Amin Al Ka'bi, Ali Mustafa Interconnection scheme for multi-protocols heterogeneous wireless communication system in civil airport Wei Zhang, He Li, Yuchu Ji, Yang Wang Design and implementation of MIMO antenna for S-band satellite applications Suganya E, Anita Jones Mary Pushpa T, Prabhu T PROPAGATION OF VECTOR VORTEX BEAMS EXCITED BY A TERAHERTZ LASER DIELECTRIC RESONATOR Anrey Degtyarev, Mykola Dubinin, Vyacheslav Maslov, Konstantin Muntean, Oleg Svistunov DEVELOPMENT OF NOVEL CONFORMAL ARRAY ANTENNA FOR AIRBORNE APPLICATIONS Ch V Ravi Sankar, PVY Jayasree, Devana V.N Koteswara Rao , Mohammad Taj, Kolasani Rajkamal, Vegiraju Satya Sudha Hexagonal-Shaped Antenna with DGS for Band-notch Ultra-Wideband and V2X Applications Rahul Kumar Garg, Sarthak Singhal Research and design of multi-attitude DF-GNNRL simulation technology based on satellite downlink beam calculation Liping Qiao, Li Zhang, Lei Feng A Design of Microstrip Low-pass Filter using ground-plane coplanar waveguide (GCPW) Farah Mehdi Chemseddine, Elbouslemti Rahmouna, Vincent Didier Earthen Lamp Shaped DGS Dual Band Microstrip Patch Antenna for High Return Loss in Biomedical Application Sonam Gour, Amit Rathi Compact Inset-Fed Rectangular Patch antenna for C band Applications Albert William raj, K.S.Joseph Wilson Planar Antenna with Pattern Reconfigurability for IoT Applications Srinag A, S. Aruna, K.Srinivasa Naik Advanced Ultrawideband Patch Antenna for Wearable and WBAN Applications Raaunak Chaudhury, Bimal Raj Dutta A COMPACT 2X2 UWB MIMO ANTENNA WITH FUNNEL SHAPED STUB FOR ISOLATION ENHANCEMENT KARTHI J, Palanivelan Manickavelu, Mohanraj Sivagurunathan, Asokan Velu FLEXIBLE WIDE BAND TRAPEZOIDAL ANTENNA FOR ELECTROMAGENTIC HEAD IMAGING SYSTEM Vaithianathan V, Ramprabhu Sivasamy, RAMESH S, Chitra S Impact of supply voltage on SRAM cell power dissipation under different topologies Damodhar Rao M, Y.V. NARAYANA, V.V.K.D.V. PRASAD Defected Ground Square Patch Edge Truncated Polarization Reconfigurable Antenna Pritam Nikam, Jayendra Kumar, Akshay Bhosale, Achinta Baidya, Shahadev Hake An Asymmetrical Psi Shaped Multi-Band Antenna for Wireless Applications Penchala Reddy Sura, Padmaja Nimmagadda, Ch Jyotsna Rani, Tathababu Addepalli, Jagadeesh Babu Kamili, B.Y.V.N.R. Swamy Swamy, A Laxmana Siridhara, G JAGADEESWAR REDDY SMALL SCALE MIMO ANTENNA WITH HIGH ISOLATION FOR 5G COMMUNICATION DILIP KUMAR CHOUDHARY, Tanweer Ali, Rajendra Prasad P, Roshan Zameer Ahmed PERFORMANCE ANALYSIS OF ACHIEVABLE BIT RATES IN RIS-ASSISTED MASSIVE MIMO NETWORKS AT 28 GHZ BAND SHARINI DL, KANTHI M, RAVILLA DILLI EFFECT OF THICK VEGETATION COVER, BUILDING OBSTRUCTIONS, AND EARTH TERRAIN ON THE QUALITY AND PERFORMANCE OF THE GSM SIGNAL AT THE FEDERAL POLYTECHNIC ADO EKITI. Temitope John Alake, Ayodeji Bamisaye, Tolulope Tunji Oladimeji FOUR ELEMENT CIRCULAR PATCH MIMO ANTENNA WITH PROTRUDING GROUND STUB FOR 5G COMMUNICATION Rajalakshmi B, Chitra S DUAL-BAND BANDSTOP FILTERS BASED ON ULTRA THIN FREQUENCY SELECTIVE SURFACES Andrei Perov REAL-TIME IMPLEMENTATION OF LWT BASED NOVEL IR AND VI FUSION ALGORITHM USING RASPBERRY PI PLATFORM Lingamallu Naga Srinivasu, Sumanth Kumar Panguluri, Srinivasa Rao Kandula, Ponduri Vasanthi Fractal Based UWB-MIMO antenna with reconfigurable Band-Notching Characteristics Bharghava Punna, Mohd Sofiyan, N. Siddartha Reddy, Nagarani Bollam
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集 订购及政策 Begell House 联系我们 Language English 中文 Русский Português German French Spain