Abstract

A novel frequency multiplier using a composite right/left-handed transmission line and defected ground structure (DGS) is proposed. The left-handed transmission line (LH TL) in the proposed frequency multiplier suppresses the fundamental component (f0), while the dumb-bell or spiral shaped DGS diminish unwanted harmonics such as second, third, and fourth harmonic. The frequency multipliers are designed at f0 of 1 GHz by the proposed technique and measured results are presented. The measured output power at 2f0, 3f0, 4f0, is -3.77 dBm, -6.70 dBm, -6.58 dBm, respectively, when the fundamental input power is 0 dBm.

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