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Effect of slot geometry on linearly polarized radial line slot array characteristics
Author(s) -
Subbarao B.,
Fusco V. F.
Publication year - 2002
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.10503
Subject(s) - standing wave ratio , return loss , radial line , concentric , optics , microwave , bandwidth (computing) , slot antenna , physics , geometry , polarization (electrochemistry) , linear polarization , materials science , electrical engineering , engineering , telecommunications , microstrip antenna , mathematics , chemistry , laser , antenna (radio)
This Letter demonstrates low cross polarization with improved return loss and bandwidth for a single concentric ring linearly polarized radial line slot array (LPRLSA) operating at 10.65 GHz, gain 14 dB. This was acheived by narrowing the slot width and optimizing the placement of each slot pair relative to the edge of a short‐circuited radial waveguide. Measured return loss and cross polarization levels were better than −20 dB over a 10% bandwidth (cf. 3.5% previously reported) at VSWR of 2. The measured and simulated fa‐ field patterns are presented. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 14–16, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10503