寬頻帶高增益微帶天線元研究
STUDY ON THE WIDE-BAND AND HIGH-GAIN MICROSTRIP ANTENNA ELEMENT
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摘要: 本文提出了一種微帶天線元的新結(jié)構(gòu),它具有寬頻帶和高增益特性。用譜域法推導(dǎo)了特征方程。用等效電路觀點(diǎn)得到輸入駐波比的頻率特性公式、數(shù)值計(jì)算設(shè)計(jì)了一個(gè)C波段微帶天線元。實(shí)測(cè)駐波比帶寬達(dá)16％(VSWR1.5)或25％(VSWR2),增益在10.2～11.3 dB范圍。這表明其帶寬和增益都比普通微帶天線元的帶寬(5～6)％和增益(6～7)dB大得多。
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關(guān)鍵詞:
- 微帶天線; 寬頻帶; 高增益
Abstract: A novel three layers microstrip antenna elect that has the advantages of wide band and high gain is proposed. The characteristic equation and the frequency characteristic formulas of the input stand wave ratio are obtained by using the spectral domain method and equivalent circuit method, respectively. With the aid of the numerical results, a C-band microstrip antenna element with band width of 16 (SWR1.5) or 25 (VSWR2) and gain of 10.2-11.3 dB is developed, which are much larger than the bandwidth of 5-6 and the gin of 6-7 dB of the common microstrip antenna element. -
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