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本文介绍一种HE_(11)和HE_(11)混合模激励的波纹喇叭的应用,为了使性能在两个独立波段上达到最佳,在喇叭上采用交替波纹深度。这种技术已应用于3.7—4.2千兆赫下行通道和5.925—6.425千兆赫上行通道的通信卫星波段,作为地面终端站的馈源。喇叭采用适度的张角以使喇叭口径上的相位畸变最小。采用HE_(12)模来展宽上行波段的波束,使两个波段的波束宽度相等。可以控制这种双模喇叭的波束形状,使两个波段中心频率
This article describes the application of a HE_ (11) and HE_ (11) mixed mode excited ripple horn. In order to optimize performance over two independent bands, alternating ripple depths are used on the horn. This technique has been applied to the communications satellite band of the 3.7-4.2 GHz downlink and the 5.925-6.425 GHz uplink as the feed to the ground terminal. Speaker with a moderate angle to minimize the speaker on the phase distortion. The HE_ (12) mode is adopted to broaden the beam in the uplink band so that the beam widths of the two bands are equal. You can control the beam shape of this dual mode horn so that the center frequency of both bands is