Inventor
BIRKBECK JOHN
GB13 patents
⚠️ This page may combine multiple inventors who share the name “BIRKBECK JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PSEMI CORP
11 patentsUS11025207B2Jun 1, 2021
Bias techniques for controlled voltage distribution in stacked transistor amplifiers
PSEMI CORP8 citations83
US11133782B2Sep 28, 2021
Bias techniques for amplifiers with mixed polarity transistor stacks
PSEMI CORP8 citations82
US11075604B2Jul 27, 2021
RF frequency multiplier without balun
PSEMI CORP5 citations82
US10075159B1Sep 11, 2018
High frequency phase shifter using limited ground plane transition and switching arrangement
PSEMI CORP10 citations82
US11711068B2Jul 25, 2023
Low loss reflective passive phase shifter using time delay element with double resolution
PSEMI CORP2 citations72
US10840889B2Nov 17, 2020
Low loss reflective passive phase shifter using time delay element with double resolution
PSEMI CORP2 citations72
US11689161B2Jun 27, 2023
Bias techniques for amplifiers with mixed polarity transistor stacks
PSEMI CORP1 citations71
US10211801B2Feb 19, 2019
Hybrid coupler with phase and attenuation control
PSEMI CORP2 citations71
US12278597B2Apr 15, 2025
Bias techniques for amplifiers with mixed polarity transistor stacks
PSEMI CORP0 citations61
US11601092B2Mar 7, 2023
RF frequency multiplier without balun
PSEMI CORP1 citations61
US10396780B2Aug 27, 2019
High frequency phase shifter using limited ground plane transition and switching arrangement
PSEMI CORP0 citations50