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A beam-patterns switchable microstrip leaky-wave antenna (MLWA) is presented in this letter. A new feeding configuration of MLWA has been shown. MLWA fed with two feeding terminals on different sides radiates out single-beam radiation patterns. Through controlling SPDT switch, the beam-patterns change from single-beam mode to dual-beam mode. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3060–3063, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22949 [ABSTRACT FROM AUTHOR]

A microstrip leaky-wave antenna (MLWA) with parasitic elements is presented in this letter. The short MLWA is the basic element, and two microstrip patches with a short-circuit edge worked as the parasitic elements. The main lobe scans from 66° to 42° when operating frequency increases from 5.9 to 6.9 GHz. In contrast to the conventional MLWA, the reflected wave of the short MLWA (about two wavelengths) with parasitic elements is suppressed 12 dB at 6.9 GHz. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1565–1567, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23428 [ABSTRACT FROM AUTHOR]