An efficient Schottky-varactor frequency multiplier at millimeter waves. Part III. Quadrupler |
| |
Authors: | Timo J. Tolmunen and Antti V. R?is?nen |
| |
Affiliation: | (1) Radio Laboratory, Helsinki University of Technology, Otakaari 5 A, SF-02150 Espoo, Finland |
| |
Abstract: | In this research the efficiency of a millimeter-wave Schottky-varactor quadrupler was studied. Theoretical simulations were carried out by using a nonlinear analysis program to find the optimum embedding impedances for a given diode. Emphasis was placed on the study of optimum idlers at the 2nd and 3rd harmonics, which are essential for a high quadrupling efficiency. For experimental verification a quadrupler for 140–155 GHz output frequency range with fixed idler terminations was constructed. This quadrupler was tested with different output configurations. A 10% tunable bandwidth was obtained with output power in the range of 1.5–2.7 mW whenPin=40 mW. The highest efficiency measured was 11.3% at 148 GHz with 10 mW input power. |
| |
Keywords: | frequency multiplier quadrupler millimeter waves Schottky-varactor multiplication efficiency embedding impedance |
本文献已被 SpringerLink 等数据库收录! |