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Study and design of a broadband coplanar waveguide–fed modified folded slot antenna
Author(s) -
Ali M.,
Usaha R.,
Hu Y.
Publication year - 2004
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2003rs002964
Subject(s) - standing wave ratio , coplanar waveguide , broadband , slot antenna , bandwidth (computing) , materials science , electrical impedance , biconical antenna , acoustics , antenna (radio) , optics , antenna measurement , optoelectronics , physics , computer science , telecommunications , microstrip antenna , electrical engineering , engineering , microwave
This paper presents the study and design of a coplanar waveguide–fed broadband modified folded slot antenna, including new techniques to achieve broad impedance bandwidth when the antenna size is small. Antenna impedance and bandwidth are investigated as functions of slot parameters, substrate dielectric constant, and substrate thickness. Prototypes of broadband antennas are fabricated on RO4003 (ɛ r = 3.38) and are measured. Two types of antennas are proposed with respective bandwidths of 44.4 and 80% with less than 2:1 VSWR.