邊波瓣 的英文怎麼說
中文拼音 [biānbōbàn]
邊波瓣
英文
side lobe-
A patch antenna with etched holes on the ground plane is also studied. the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment. the results show that the surface waves are suppressed greatly, the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane
全面地研究了地面腐蝕周期圓孔結構的電磁晶體貼片天線在基波頻率處的性能，用fdtd方法並結合pml邊界處理技術對該天線所取得的研究結果顯示，本文設計的地面腐蝕型電磁晶體結構抑制了貼片天線中的表面波，增加了天線的帶寬，並有效地削弱了旁瓣，使天線的e面方向圖上110和260方向的兩個旁瓣被削弱了10db 。Single - semidouble white wavy star / dark yellow markings, hot pink edge. medium green, plain. standard
單瓣到半重瓣的白色波浪星形花，深黃著色，重粉紅色邊。中綠色一般型葉。標準型。Semidouble dark lavender star / purple band, white wavy edge
半重瓣星狀花，深紫色鑲暗紫色邊，再滾波浪白色邊。Double dark coral ruffled large. dark green, wavy. large
重瓣深珊瑚色大朵折邊花。深綠色波浪葉。大型。A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )
設計了一種基底鉆周期圓孔結構的電磁（光子）晶體貼片天線，用fdtd方法並結合pml吸收邊界條件對該天線進行了研究，結果表明本文所設計的基底鉆孔型電磁晶體貼片天線取得了多方面的性能改善，與普通天線相比，基底中的表面波受到很大抑制，天線的帶寬增加，遠場方向圖上天線的旁瓣和背瓣被明顯削弱，向前輻射的增益由原來的12db增加到26db ，增加了14db ，比文獻上報道的gonzalo等人的研究結果提高了4db 。The radiation pattern of the antenna is more rotationally symmetric, and a more reduction on the sidelobe levels of the antenna is achieved as compared to the antenna with the corrugated soft surface. in conclusion, in the present thesis both theoretical and experimental research works have been carried out intensively on patch antennas based on photonic - bandgap structures. it is shown that our photonic bandgap structures can greatly improve the performance of the patch antennas
該平面圓環結構軟表面天線是在空氣介質的皺褶圓環結構軟表面天線的基礎上改進得到，為了便於比較，我們首先研究了空氣介質的皺褶圓環結構軟表面天線，用fdtd方法並結合pml吸收邊界條件對該天線的性能進行了研究，結果表明天線的帶寬增加，天線的軸對稱性得到了很大改善， e面和h面方向圖的波束幾乎重合，天線的旁瓣和背瓣受到很大的抑制。Semidouble dark pink frilled. black - green, wavy / red back. semiminiature
半重瓣深粉紅色折邊花。墨綠色波浪葉，紅色葉背。半迷你型。Semidouble creamy white / wide green edge. dark green, wavy / red back. standard
半重瓣，奶油白色鑲寬綠邊的花。深綠色波浪形的葉，紅色的葉被。標準型。Semidouble dark red sticktite star / wide white ruffled edge
半重瓣不掉落的星型花，深紅色有粉寬的白色波浪邊。Thus the main and auxiliary polarization radars form a side lobe canceller system. based on the modeling of this system, an anti - jamming filter algorithm in the polarization - spatial domain is brought forward
針對接收全極化雷達，在其旁邊放置全向雙極化正交陣列天線與雷達構成旁瓣對消系統，並根據系統模型提出了極化域-空域聯合濾波抗干擾演算法。Single - semidouble medium blue star / darker eye, white wavy edge, variable green
單瓣-半重瓣的中藍色星型花，有深色的眼，白色波浪鑲邊，變異的綠色。分享友人