摘要
脊波导具有截止波长增大使波导波长减小和单模工作波长范围加宽的特性,故将脊波导用于工作频带宽度达25%的塔康天线,能够解决存在的矛盾;并且脊波导的等效阻抗低,使做成的垂直阵元便于与幅控水平功分PIN调幅器间阻抗联接。脊波导窄边开槽垂直阵元在自身内部实现垂直功率分配和垂直相位分配,这样就省掉36个垂直功分器。这种垂直阵元由纯机械加工形成,可提高设备可靠性。另外,阵元间互耦减小、垂直增益提高。
Ridging waveguide has the characteristics of increasing cut-off wavelength to reduce waveguide wavelength and widening working wavelength range of single mode.Therefore,ridging waveguide can be used for TACAN antenna with working frequency band width up to 25%to solve the existing contradiction.Moreover,the equivalent impedance of the ridge waveguide is low,which makes it convenient for the vertical array to be connected with the impedance of the amplitude-controlled horizontal power divider PIN amplitude modulator.The ridge waveguide slotted vertical array realizes vertical power distribution and vertical phase distribution within itself,thus 36 vertical power dividers are saved.The vertical array is formed by pure machining,which can improve the reliability of the equipment.In addition,the mutual coupling between elements decreases and the vertical gain increases.
作者
沈永春
尹长彬
朱鹏
栗秀清
杜洪起
SHEN Yongchun;YIN Changbin;ZHU Peng;LI Xiuqing;DU Hongqi
出处
《现代导航》
2021年第1期52-59,共8页
Modern Navigation
关键词
脊波导
截止波长
等效阻抗
窄边开槽
交叉极化
Ridged Waveguide
Cut-off Wave-length
Equivalent Impedance
Narrow Edge Slotting
Cross Polarization
