Design and Fabrication of the Oscillator Type Active Antenna by Using Slot Coupling

슬롯결합을 이용한 발진기형 능동 안테나의 설계 및 제작

  • 문철 (연세대학교 전자공학과) ;
  • 윤기호 (연세대학교 전자공학과) ;
  • 장규상 (한국통신 위성사업본부) ;
  • 박한규 (연세대학교 전파공학과) ;
  • 윤영중 (연세대학교 전파공학과)
  • Published : 1997.03.01


In this paper, the oscillator type active antenna used as an element of active phased array antenna is designed and fabricated using slot coupling. The radiating element and active circuit are fabricated on each layer respectively and coupled electromagnetically through slot on the ground plane. This structure can solve the problems such as narrow bandwidth of microstrip antenna, spurious radiation by active circuits, and spaces for integration of the feeding circuits which are caused by integrating antennas with oscillator circuits in the same layer. The active antenna in this paper, the oscillation frequency can be tuned linearly by controlling the drain bias voltage of FET. The frequency tuning range is between 12.37 GHz to 12.65 GHz when bias voltage is varied from 3V to 9V, thus frequency tuning bandwidth is 280 MHz (2.24%). The output power of antenna is uniform within 5dB over frequency tuning range. Therefore this active antenna can be used as an element of linear or planar active phased array antennas.



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