皺紋喇叭饋電的卡塞格倫天線的研制
THE DEVELOPMENT OF A CORRUGATED HORN FEED CASSEGRAINIAN ANTENNA
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摘要: 正 我們研制的微波輻射計是用于機載的和地面的無源探測設(shè)備,可用來接收地面上各種物質(zhì)輻射的微波能量,從而判別不同的地物目標。天線是微波輻射計用來接收地物輻射能量的部件,對天線除要求高增益低旁瓣外,還要求有比較好的方向圖,緊湊的結(jié)構(gòu)和具有所要求的地面分辨率。如圖1所示,天線尺寸(D),飛行體高度(H)和地面分辨率(r)的關(guān)系為
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關(guān)鍵詞:
Abstract: After comparing many types of antennas, we decided on the corrugated horn feed cassegrainian antenna. After improvement in input feeding method, the antenna becomes usable. After many flying tests, it proves rugged enough. For X-band, the characteristics of the antenna are: diameter D=800 mm, Gain G=34.7 dB, Side lode 2%, beam width 20.5=247 . -
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