Browsing by Author "Chiang, CH"

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Microstrip directional coupler with nearly ideal TEM coupler performance
(2005-05-26)
Wang, SM
;
Hsieh, MY
;
Chiang, CH
;
Chang, CY
;
電信工程研究所
A meandered parallel coupled-line structure is proposed to achieve high directivity within a wide bandwidth. By properly increasing the meandered parallel coupled-line sections, the high-directivity band-width becomes much wider. An example coupler is fabricated to verify the theory. More than 50 dB of isolation is achieved over a bandwidth of zero to twice centre frequency.