Abstract
AbstractThis letter presents novel modified coplanar waveguide (CPW) bow‐tie slot printed antennas fed by a CPW‐to‐CPW transition. The proposed modules are miniature shaped, low‐profile radiators with bidirectional radiation characteristics, which can be optimally integrated in future ultra wide band transceivers. An innovative asymmetric bow‐tie configuration is introduced for the first time and the use of inductively coupled slots for bandwidth enhancement is additionally proposed and experimentally studied. The incorporated tapered CPW‐to‐CPW transition from Zin ≠ 50 Ω to Zin = 50 Ω offers upgraded impedance bandwidth and compatibility with 50 Ω CPW or coaxial lines. Details of the design procedure and experimental results exhibiting a bandwidth (VSWR <2) of 123% are presented. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1816–1820, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21768
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