Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Development of a New Active Phase Shifter

  • Kim, S.J. (Department of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)) ;
  • N.H. Myung (Department of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST))
  • Published : 2000.07.01
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Abstract

ln this paper, a new active phase shifter is proposed using a vector sum method, and it is shown that the proposed phase shifter is more efficient than the others in size, power, number of circuits, and gain. Also a unique digital phase control method of the circuit is suggested. The proposed scheme was designed and implemented using a Wilkinson power combiner/divider, a branch line 3dB quadrature hybrid coupler and variable gain amplifiers (VGAs) using dual gate FETs (DGFETs). Furthermore, it is also shown that the proposed scheme is more efficient and works properly with the digital phase control method.

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