[1] Morgan M, Weinreb S. A Full Waveguide Band MMIC Tripler for 75~110GHz[J]. IEEE MTT-S International Microwave Symposium Digest,1:103-106.
[2] Qun Xiao, Jeffrey L Hesler, Thomas W Crowe, et al. A 270-GHz Tuner-Less Heterostructure Barrier Varactor Frequency Tripler, IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS,2007,17(4):241-243.
[6] Mao S, Jones S, George D V. Millimeter-wave Integrated Circuits[J]. IEEE Transctions on Microwave Theory and Techniques.1968,16(7):455-460.