Abstract
The novel transmission line based on metamaterials substrate was studied theoretically. The characteristic impedance and transmission wavelength of such transmission line are analytically calculated in framework of classical transmission-line theory. Moreover, the characteristic of similar micro-strip line were also studied with FEM simulation. Results showed that using metamaterials as a substrate, the characteristic impedance would be greatly increased, providing a new method to reduce the loss in the RF circuit. The transmission wavelength would be effectively extended at the same frequency. That was the electromagnetic radiation would greatly reduce in such RF circuit. Once the transmission wavelength was much larger than the size of the circuit board, the circuit theory could be adopted in RF design. Which would greatly reduce the difficulty of RF design.
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