MICROSTRIP LINE AND CPW FED ULTRA WIDEBAND SLOT ANTENNAS WITH U-SHAPED TUNING STUB AND REFLECTOR | Zendy

Ricky Chair | Zendy; Ahmed A. Kishk | Zendy; KaiFong Lee | Zendy; Charles E. Smith | Zendy; D. Kajfez | Zendy

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MICROSTRIP LINE AND CPW FED ULTRA WIDEBAND SLOT ANTENNAS WITH U-SHAPED TUNING STUB AND REFLECTOR

Author(s) -

Ricky Chair,

Ahmed A. Kishk,

KaiFong Lee,

Charles E. Smith,

D. Kajfez

Publication year - 2006

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier05060701

Subject(s) - stub (electronics) , microstrip , wideband , slot antenna , reflector (photography) , microstrip antenna , optoelectronics , optics , acoustics , materials science , physics , electrical engineering , engineering , antenna (radio) , light source

—Wideband printed rectangular slot antennas backed with reflectors for unidirectional radiation patterns are investigated. A U- shaped tuning stub is used to improve the matching. Two different feeding mechanisms,are introduced. A rectangular slot excited by microstrip line feed with a U-shaped tuning stub gives an impedance bandwidth,of 110% (|S11| < −10 dB). When the rectangular slot is excited by a coplanar waveguide (CPW), it gives an impedance bandwidth of 120%. Both slot antennas radiate broadside across the matching band, with front-to-back ratios of 20 dB.

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