Two designs of frequency triplers, which use planar transitions as baluns and an anti parallel diode pair to achieve wide bandwidth,\nare presented.The ultra wide band transitions are utilized for input and output impedance matching of the frequency triplers.The\ndesign process and operation principles are described in this paper. The implemented frequency triplers exhibit flat response over\nwide frequency range of 3 to 9GHz. The proposed Type A frequency tripler shows conversion loss of ?18 dB with above 30 dB even\nharmonics suppression.With Type B frequency tripler, conversion loss of ?17 dB and above 25 dB even harmonic suppression are\nachieved.
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