An automated system for measuring power devices in Ka-band

A new configuration to improve the active loop technique for transistor large signal characterization in the Ka band

“…In the case of large ⌫ L (larger than ⌫ 0 defined by (5), relations (6) and (16) show that, because of the smaller radius ͉R͉in the new configuration, the loop amplifier will operate with lower output power whatever the couple (C t , C pre ) and therefore its linear behavior can be secured. So, from (3), (6), and (16), it can be shown that the loop amplifier output power in the new configuration is reduced, in comparison with the conventional one, by…”

“…Its central probe pin is connected to the feeding point and its grounding sheath is connected to the system ground. The simulated results are obtained using the Ansoft High-Frequency Structure Simulator (HFSS V10) [6].…”