【摘 要】
：
Commonly, the classical formulas are suitable for designing the TE21-mode coupler for the operating frequency under Ka-band by ignoring the wall thickness. However, in practice, for the one operated in the Ka-band, such classical formulas are not valid an
【机 构】
：
Institute of Space Antenna, China Academy of Space Technology,Xi’an 710100
论文部分内容阅读
Commonly, the classical formulas are suitable for designing the TE21-mode coupler for the operating frequency under Ka-band by ignoring the wall thickness. However, in practice, for the one operated in the Ka-band, such classical formulas are not valid and the effect of wall thicknesses should be considered. Herein, we propose a design method for the Ka-band TE21-mode coupler via computer simulations, taking into account the wall thickness. The experimental results show that using the linear twice-weighted algorithm to optimize the coupling hole size can improve the coupler performance. And the bandwidth of such coupler increases by 10％ with lower coupling loss ( 40 dB).
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