آنتن شلاقی جدید قابل پیکربندی مجدد
ترجمه نشده

آنتن شلاقی جدید قابل پیکربندی مجدد

عنوان فارسی مقاله: آنتن شلاقی جدید قابل پیکربندی مجدد فرکانسی پهن باند بافرکانس بالا با بارگذاری پره های تابشی
عنوان انگلیسی مقاله: A Novel HF Broadband Frequency-Reconfigurable Whip Antenna With Radiation Blades Loading
مجله/کنفرانس: دسترسی – IEEE Access
رشته های تحصیلی مرتبط: مهندسی برق
گرایش های تحصیلی مرتبط: برق مخابرات
کلمات کلیدی فارسی: فناوری قابل پیکربندی مجدد فرکانسی، بارگذاری پره های تابشی، آنتن پهن باند، بارگذاری توده ای، شبکه تطابقی، الگوریتم بهینه سازی ملخ
کلمات کلیدی انگلیسی: Frequency-reconfigurable technology, radiation blades loading, broadband antenna, lumped loading, matching network, grasshopper optimization algorithm
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
شناسه دیجیتال (DOI): https://doi.org/10.1109/ACCESS.2019.2955319
دانشگاه: College of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China
صفحات مقاله انگلیسی: 12
ناشر: آی تریپل ای - IEEE
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 4.641 در سال 2018
شاخص H_index: 56 در سال 2019
شاخص SJR: 0.609 در سال 2018
شناسه ISSN: 2169-3536
شاخص Quartile (چارک): Q2 در سال 2018
فرمت مقاله انگلیسی: PDF
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E14051
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست مطالب (انگلیسی)

Abstract

I. Introduction

II. Radiation Blades Structure

III. Design of Frequency Reconfigurable Antenna

IV. Measurement and Analysis of Scaled Antenna

V. Conclusion

Authors

Figures

References

بخشی از مقاله (انگلیسی)

Abstract

Aiming at the problems of low gain, low efficiency in low frequency band and warping pattern in high frequency band of the existing HF broadband whip antenna, this paper introduces frequency reconfigurable antenna technology and radiation blades loading technology to redesign whip structure, loading and matching network in different bands, and designs a kind of frequency-reconfigurable whip antenna with improved gain and efficiency. The whip body structure, loading and matching network structure of the antenna in each band are optimized, and the on-off control is carried out through the radio frequency switch according to the actual needs. The results show that the standing wave ratio of the proposed antenna is all less than 3, the average value is 2.32; the gain is all greater than -2dB, the average value is 3.63dB; the total efficiency is all over 20%, the average value is 72.77%, and the pattern keeps horizontal omnidirectional in the whole short wave band without upward warping phenomenon.

Introduction

The working frequency band of 10-meters HF whip antenna is 3∼۳۰MHz, and the bandwidth is up to 10 octaves. In the whole short-wave band, for the whip antenna with standing wave current distribution, the limitation of its operating frequency band is mainly caused by its impedance characteristics [1], [2], because the input impedance of whip antenna is highly sensitive to frequency, which is hard to match the feeder. In low frequency band, the antenna has small electrical length, small input resistance, large input capacitance, high Q value, low antenna efficiency, narrow working frequency band, which makes it difficult to meet the requirements of modern communication. In high frequency band, the effective length of antenna is far larger than 1/4 wavelength, the reverse phase current on the oscillator increases continuously, the maximum direction of the antenna pattern deviates from the horizontal direction, and the phenomenon of ‘‘warping’’ appears, which results in the antenna can’t satisfy the short-range and medium-range communication in the high frequency band. In order to improve the bandwidth and radiation performance of antennas, top loading [3], [4], loading network [5]–[7], broadband matching network [8]–[10], fractal technology [11]–[13] have been proposed. At present, loading and matching network technology is widely used, because the introduction of impedance elements effectively improves the standing wave of antenna, but it also brings new losses to the antenna, which greatly reduces its gain and efficiency.