5. A microstrip line has a width of 352 um and is constructed on a substrate that is 500 um thick with a relative permit

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5 A Microstrip Line Has A Width Of 352 Um And Is Constructed On A Substrate That Is 500 Um Thick With A Relative Permit 1 (48.15 KiB) Viewed 30 times

5. A microstrip line has a width of 352 um and is constructed on a substrate that is 500 um thick with a relative permittivity of 5.6. (a) Determine the frequency at which trans- verse resonance would first occur. (b) When the dielectric is slightly less than one- quarter wavelength in thickness the dielec- tric slab mode can be supported. Some of the fields will appear in the air region as well as in the dielectric, extending the ef- fective thickness of the dielectric. Ignoring the fields in the air (use a one-quarter wave- length criterion), at what frequency will the dielectric slab mode first occur?