<authors> <author> <name>K.K.S. Jamwal</name> <affiliationId>1</affiliationId> </author> <author> <name> G.B. Vakil</name> <affiliationId>2</affiliationId> </author> </authors> <affiliationsList> <affiliationName affiliationId="1">Post Graduate Department of Post Graduate Department of Physics University, of Kashmir, Srinagar 190 006 (INDIA)hysics University, of Kashmir, Srinagar 190 006 (INDIA)</affiliationName> <affiliationName affiliationId="2">Post Graduate Department of Physics University, of Kashmir, Srinagar 190 006 (INDIA)</affiliationName> </affiliationsList> <abstract language="eng">Dielectric materials like Alumina (Al2O3) have been used for design of microwave antennas. However, due to material properties and difficulty in fabrication, it is not suitable for L, C, X and Ku-Band frequencies applications between 1-15 GHz. Polymer materials like Nylon, Teflon, polyacetal, polypropylene etc., however, have shown good gain and radiation characteristics at these frequencies and are easily fabricated with different design profiles. The polymer materials considered suitable for microwave antennas should have fairly large dielectric constant er (between 1.5-10) and relatively small tan d loss factor (< 0.001) at these frequencies. The paper presents material characteristics, antenna profiles and gain-radiation characteristics of some important polymer microwave antennas that have found wide acceptance in the industry. </abstract> <fullTextUrl format="html">https://ultraphysicalsciences.org/paper/1189/</fullTextUrl> <keywords> <keyword language="eng">Polymer Material </keyword> </keywords> <keywords> <keyword language="eng">Properties & Characteristics </keyword> </keywords> <keywords> <keyword language="eng">Microwave Antenna</keyword> </keywords> </record> </records>

eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences December 2009 21 3 717 719 jusps-B 1189 article <authors> <author> <name>K.K.S. Jamwal</name> <affiliationId>1</affiliationId> </author> <author> <name> G.B. Vakil</name> <affiliationId>2</affiliationId> </author> </authors> <affiliationsList> <affiliationName affiliationId="1">Post Graduate Department of Post Graduate Department of Physics University, of Kashmir, Srinagar 190 006 (INDIA)hysics University, of Kashmir, Srinagar 190 006 (INDIA)</affiliationName> <affiliationName affiliationId="2">Post Graduate Department of Physics University, of Kashmir, Srinagar 190 006 (INDIA)</affiliationName> </affiliationsList> <abstract language="eng">Dielectric materials like Alumina (Al2O3) have been used for design of microwave antennas. However, due to material properties and difficulty in fabrication, it is not suitable for L, C, X and Ku-Band frequencies applications between 1-15 GHz. Polymer materials like Nylon, Teflon, polyacetal, polypropylene etc., however, have shown good gain and radiation characteristics at these frequencies and are easily fabricated with different design profiles. The polymer materials considered suitable for microwave antennas should have fairly large dielectric constant er (between 1.5-10) and relatively small tan d loss factor (< 0.001) at these frequencies. The paper presents material characteristics, antenna profiles and gain-radiation characteristics of some important polymer microwave antennas that have found wide acceptance in the industry. </abstract> <fullTextUrl format="html">https://ultraphysicalsciences.org/paper/1189/</fullTextUrl> <keywords> <keyword language="eng">Polymer Material </keyword> </keywords> <keywords> <keyword language="eng">Properties & Characteristics </keyword> </keywords> <keywords> <keyword language="eng">Microwave Antenna</keyword> </keywords> </record> </records>