本研究之主旨，乃研製兩款新型頻率可重置主動集成天線，該創新設計之基礎以開關二極體結合超穎物質實現頻率可重置超穎物質共振器，成功整合兩超穎物質共振器於單一天線結構體上，透過開關二極體控制左手對地電感，使主動天線可於負導磁率(MNG)共振器模態與左右手複合傳輸線(CRLH)模態之間切換，於不改變電晶體偏壓之情況下，僅透過控制開關二極體之偏壓便實現頻率可重置特性。
本論文首先利用單顆電晶體以迴授電路架構結合頻率可重置超穎物質共振器，利用偏壓控制開關二極體之開與關，使主動天線於負導磁率共振器之+1模態與左右手複合共振器之+1模態分別產生穩定振盪於不同操作頻率，成功實現頻率可重置之特性。
其次，為充分發揮超穎物質可使共振器之物理尺寸與操作頻率脫鉤之特性，吾人嘗試以交錯耦合對電路結合頻率可重置超穎物質，滿足超穎物質零階共振器之振盪條件，利用偏壓控制開關二極體之開與關，使主動天線於負導磁率共振器之+1模態與左右手複合共振器之零階模態分別產生穩定振盪於不同操作頻率，成功實現另一款頻率可重置主動集成天線。

This study focuses on designing two types of frequency reconfigurable active integrated antenna. This novel idea is based on using switching pin diode with metamaterial in order to realize frequency reconfigurable metamaterial resonator. Two metamaterials are successfully integrated on single antenna structure. By only adjusting the voltage of pin diode to control left-handed shunt inductor and keep the bias voltage of transistor as the same, the active antenna can operate between negative μ resonator (MNG) mode and composite right/left handed (CRLH) mode.
Firstly, frequency reconfigurable active integrated antenna is proposed. This novel layout is based on the feedback oscillator network using frequency reconfigurable metamaterial resonator integrated with single transistor. By controlling the switching diode, the oscillation steadily appears at two distinct frequencies corresponding to +1 mode of MNG resonator and CRLH resonator.
Secondly, with the characteristic of metamaterial that the size and operating frequency are not unrelated, frequency reconfigurable metamaterial resonator in cross couple pair oscillator is studied. As long as adjusting the voltage to control the status of pin diode in order to achieve the condition of zeroth-order oscillator, the active antenna can operate at two distinct frequencies corresponding to the +1 mode of MNG resonator and zeroth-order mode of CRLH resonator. In the second study, the other frequency reconfigurable active integrated antenna is successfully realized.

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