Third order intermodulation distortion in HTS Josephson Junction downconverter at 12GHz
- ISTEC-SRL, Tokyo (Japan)
Here the authors first report on the microwave characteristics of the third order intermodulation distortion(IMD3) in High-Tc Superconductor (HTS) Josephson Junction (JJ) Downconverter at 12GHz. They have successfully developed high quality nonlinear YBCO microbridge Josephson junctions for such an active MMIC as a mixer with RF, LO, IF and bias filters, which have been fabricated on (100) MgO substrates with 20mm x 20mm x 0.5mm dimensions. The minimum conversion loss of the JJ mixer is 11 dB at very small local microwave input power LO= {minus}20dBm which is two order less than Schottky diode mixer. Consequently, this small optimum LO power gives the small RF input power at which the output IF power of the YBCO mixer saturates. Two-tone third-order intercept point(IP3) performance is a significantly important figure of merit typically used to define linearity of devices and circuits. The RF input power = {minus}15dBm at the IP3 point is obtained for the YBCO mixer at 15K and LO = 10.935GHz with {minus}22dBm. The have successfully measured the dependence of IMD3 on temperature, bias current and LO power.
- OSTI ID:
- 61234
- Report Number(s):
- CONF-940142-; ISBN 0-8194-1451-4; TRN: IM9526%%15
- Resource Relation:
- Conference: OE/LASE `94: conference on optics, electro-optics, and laser applications in science and engineering, Los Angeles, CA (United States), 22-29 Jan 1994; Other Information: PBD: 1994; Related Information: Is Part Of High {Tc} microwave superconductors and applications. Volume 2156; Hammond, R.B.; Withers, R.S. [eds.]; PB: 235 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Video detection of microwaves using high- Tc Y-Ba-Cu-O thin films
Two-tone intermodulation distortion in high Tc superconducting thin films