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http://dx.doi.org/10.5515/KJKIEES.2010.21.4.417

X-Band 6-Way Waveguide Power Divider Using Inductive Post  

Kim, Dong-Hyun (Department of Radio Communication Engineering, Korea Maritime University)
Oh, Soon-Soo (ETRI)
Min, Kyeong-Sik (Department of Radio Communication Engineering, Korea Maritime University)
Kang, Suk-Youb (Department of Radio Communication Engineering, Korea Maritime University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.4, 2010 , pp. 417-426 More about this Journal
Abstract
This paper describes the 6-way power divider to be used as a feeding structure of the waveguide array antenna generating the plane wave at the near distance. The SMA connector has been connected at the center of the power divider in order to feed the radiating element. The six output ports made of waveguide are positioned on the peripheral of the divider. This paper proposes the method utilizing the inductive post in order to decrease the return loss. The height of the feeding pin, the diameter of the inductive post, and the distance between the feeding pin and inductive post have been investigated, and as a result, the power divider has been optimized. The simulated and measured results show the low return loss of about -40 dB. The calculated and measured transmission coefficients are -7.78 dB and -8.06 dB, respectively. The output power of the six waveguide port show equal-amplitude and equal-phase distribution. Since the power divider proposed in this paper can be expanded to the divider having several output ports, it could be easily applied to the various array antennas.
Keywords
Inductive Post; Waveguide; Power Divider; Radial Line;
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