Title: Microstrip directional coupler with nearly ideal TEM coupler performance
Authors: Wang, SM
Hsieh, MY
Chiang, CH
Chang, CY
Institute of Communications Engineering
Issue Date: 26-May-2005
Abstract: 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.
URI: http://dx.doi.org/10.1049/el:20050681
ISSN: 0013-5194
DOI: 10.1049/el:20050681
Volume: 41
Issue: 11
Begin Page: 651
End Page: 653
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