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Design of PIN diode controlled variable attenuator using slow wave microstrip lines
Author(s) -
Sun KaeOh,
van der Weide Daniel
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21159
Subject(s) - microstrip , attenuator (electronics) , microwave , attenuation , pin diode , diode , materials science , voltage , center frequency , extremely high frequency , optoelectronics , electrical engineering , engineering , optics , physics , telecommunications , band pass filter
We describe a simple PIN‐diode‐controlled variable attenuator that employs a 0‐dB branch‐line directional coupler, and present a method to reduce the size using slow‐wave microstrip lines. At the center frequency, the attenuation monotonically varied from 0.7 to 23 dB with the control voltage. By using slow‐wave microstrip lines, we achieve a 60% size reduction compared to a conventional structure. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 323–327, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21159