Abstract
AbstractA two‐element ultra wideband array antenna with a 5.8 GHz band‐notch function is proposed. A novel Marchand balun feeding structure is chosen for its great merit of the equi‐amplitude and 180° phase difference signals, making the omni‐directional of radiation pattern much better. A simple u‐shape slot is inserted into the radiating patch to create a frequency band‐stop characteristic. The measured VSWR less than 2 is from 3.1 to 10.6 GHz, and the frequency notch band is from 5.7 to 5.9 GHz. The measured results agree well with the simulated. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1537–1539, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24384
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