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Novel shaped‐beam microstrip slot array series FED by stepped‐impedance line
Author(s) -
Hanqing M. A.,
Chu QingXin,
Qiuyi Zhang
Publication year - 2008
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.23662
Subject(s) - microstrip , microwave , microstrip antenna , antenna (radio) , beam (structure) , engineering , series (stratigraphy) , optics , patch antenna , electrical engineering , radiation pattern , line (geometry) , electrical impedance , substrate (aquarium) , acoustics , telecommunications , physics , mathematics , geometry , geology , paleontology , oceanography
A series‐fed eight‐slot microstrip array antenna operating at 3.5 GHz with a cosecant‐squared shape beam is presented. The shaped radiation pattern is achieved by changing only the characteristic impedance of the series fed line between slots. The proposed antenna has a shaped‐beam with elevation coverage of 35°, a gain of 10.86 dBi, and side lobe levels less than −19 dB. Since the slots and fed strip are fabricated on a single substrate, the antenna is easy to manufacture and low cost. Experimental results demonstrate the validity of this design. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2434–2437, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23662