Advances in Radio Science
www.adv-radio-sci.net
1684-9965
1684-9973
6
Kleinheubacher Berichte 2007
2008
10.5194/ars-6-49-2008
http://www.adv-radio-sci.net/6/49/2008/
http://www.adv-radio-sci.net/6/49/2008/ars-6-49-2008.html
http://www.adv-radio-sci.net/6/49/2008/ars-6-49-2008.pdf
49
54
2008-05-26
Analysis and design of a composite left-/right-handed leaky wave antenna based on the <i>H</i><sub>10</sub> rectangular waveguide mode
Y. Weitsch
mail@ihf.uni-stuttgart.de
T. F. Eibert
Institute of Radio Frequency Technology, Universität Stuttgart, 70550 Stuttgart, Germany
The presented "open" composite left-handed/right-handed (CRHLH) substrate
integrated waveguide performs well as a low-profile leaky wave antenna. This
design is distinguished due to the fact that it is derived from the approved
equivalent circuit model of the <i>H</i><sub>10</sub> rectangular hollow waveguide mode.
The wave propagation behaviour is visualised by the dispersion diagram
calculated by two different methods, infinite periodic full-wave simulation
and Matrix-Pencil analysis of driven field solutions. The periodic
configuration is also analysed in terms of the Bloch impedance. Although FR-4
serves as substrate the antenna features an efficiency of about 50% to 60%.
The radiation performance demonstrates nearly backfire to almost endfire
scanning capability of the antenna by mere frequency variation. Broadside
radiation is possible due to the balanced state at 4 GHz.
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