Abstract:
Large variety of substrate materials are available for manufacturing microstrip antennas. These differ in thickness (h) and dielectric constant (ε) apart from loss tangent and other microwave properties. This paper presents a new approach for selecting the h and ε of the MSA substrate. Bhatnagar's postulate has been used to investigate dependence of bandwidth on h and ε. This has resulted in a new formula for estimating the bandwidth of the MSA. For the required bandwidth, desired values of h and ε can be obtained. These can then be used in selecting the substrate
material.
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