Mar 30, 2017 #1 S Suo Junior Member level 2 Joined Jan 22, 2017 Messages 20 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 139 Hello, I work with patch antenna at 33 GHz, it is possible to use a thickness= 7.04 for FR-4 substrate or it is so much? Thank you in advance.
Hello, I work with patch antenna at 33 GHz, it is possible to use a thickness= 7.04 for FR-4 substrate or it is so much? Thank you in advance.
Mar 30, 2017 #2 V volker@muehlhaus Advanced Member level 6 Joined Apr 11, 2014 Messages 3,188 Helped 1,071 Reputation 2,146 Reaction score 1,138 Trophy points 1,393 Activity points 20,252 FR4 is very lossy (high loss tangent), your antenna will be very inefficient with FR4.
Mar 30, 2017 #3 SLK001 Full Member level 6 Joined Aug 29, 2015 Messages 384 Helped 137 Reputation 274 Reaction score 129 Trophy points 43 Location Coral Springs, Florida Activity points 2,393 Very bad idea. Also, in addition to the loss tangent, the dielectric constant isn't that well controlled by the manufacturer. Look into using one of Roger's substrates, or even a custom alumina substrate.
Very bad idea. Also, in addition to the loss tangent, the dielectric constant isn't that well controlled by the manufacturer. Look into using one of Roger's substrates, or even a custom alumina substrate.
Apr 5, 2017 #4 J joshuacp Member level 4 Joined Jun 25, 2005 Messages 78 Helped 3 Reputation 6 Reaction score 4 Trophy points 1,288 Activity points 2,086 Bad idea. 1. u could not get the exact valune of the dielectric constant of FR4 at 33GHz. 2. At 33GHz, loss tangent of FR4 is very large. Last edited: Apr 5, 2017
Bad idea. 1. u could not get the exact valune of the dielectric constant of FR4 at 33GHz. 2. At 33GHz, loss tangent of FR4 is very large.