An E-Band(71–76, 81–86 GHz) balanced frequency tripler for high-speed communications

An E-band transistor-based balanced frequency tripler is implemented using a 0.15 ¿m GaAs mHEMT process which can be integrated into a single-chip RF front-end. The balanced configuration with 90° hybrids at the input and output improves the port impedance matching which is measured to be better than 15 dB at the input and 10 dB at the output over the frequencies of interest. The tripler has a conversion loss of 11.5 dB from 71 GHz to 76 GHz and 14 dB from 81 GHz to 86 GHz. The second and forth harmonics are suppressed by more than 30 dB and the fundamental frequency by 20 dB. The tripler can deliver -2 dBm output power.