A MMIC double-balanced subharmonic diode ring mixer was designed for broadband satellite communications exploiting a GaAs pHEMT process. The circuit implements the frequency conversion from Q (43.5-50 GHz) to Ku-K band (17-21.5 GHz). Besides the RF, LO, and IF baluns, the MMIC integrates a buffer amplifier for the local oscillator signal, which is designed between X and Ku bands (11-16.5 GHz), due to the subharmonic operation. The mixer measured conversion loss is between 8 and 12 dB along the bandwidth, with an LO power of 9 dBm. The input p1 dB and IP3 are 2 and 15 dBm, respectively. The balanced structure ensures an LO and 2 × LO leakages at the IF port lower than -25 and -35 dBm, respectively. Other spurious remain below -67 dBc. The chip dimensions are 2.4 × 2.4 mm2.
Davide Resca, Rafael Cignani, Corrado Florian, Andrea Biondi, Francesco Scappaviva (2015). A Q/Ku-K band MMIC double-balanced subharmonic diode ring mixer for satellite communications in GaAs pHEMT technology. INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES, Volume 7, Issue 02, 107-113 [10.1017/S1759078714000695].
A Q/Ku-K band MMIC double-balanced subharmonic diode ring mixer for satellite communications in GaAs pHEMT technology
CIGNANI, RAFAEL;FLORIAN, CORRADO;
2015
Abstract
A MMIC double-balanced subharmonic diode ring mixer was designed for broadband satellite communications exploiting a GaAs pHEMT process. The circuit implements the frequency conversion from Q (43.5-50 GHz) to Ku-K band (17-21.5 GHz). Besides the RF, LO, and IF baluns, the MMIC integrates a buffer amplifier for the local oscillator signal, which is designed between X and Ku bands (11-16.5 GHz), due to the subharmonic operation. The mixer measured conversion loss is between 8 and 12 dB along the bandwidth, with an LO power of 9 dBm. The input p1 dB and IP3 are 2 and 15 dBm, respectively. The balanced structure ensures an LO and 2 × LO leakages at the IF port lower than -25 and -35 dBm, respectively. Other spurious remain below -67 dBc. The chip dimensions are 2.4 × 2.4 mm2.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
