Abstract
The propagation characteristic of Klopfenstein taped finline array was analyzed by using the theory of small reflections.As a result,the input and output optimal finline array for spatial power combiner was obtained.The finline array has the broadband characteristics and the better return loss,which will directly enhance the combiner efficiency.When the 2*2 finline array was terminated with 120Ω chip resistor,the return loss is better than 20dB and the VSWR is less than 1.25 for the entire C-band(3~4.9GHz).It is first time in China that the designs and optimiztion of the finline array are described in detail.
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