Inventor · disambiguated record
John Birkbeck
Also filed as: BIRKBECK JOHN · BIRKBECK JOHN DAVID
15 granted patents·6 pending applications·52 citations·filing 2003–2025
91Inventor score
Top patents by PatentIndex Score
21 records- 0193US10075159B1High frequency phase shifter using limited ground plane transition and switching arrangementPSEMI CORP·Filed 2017·Granted Sep 11, 2018·10 cites·22 claims
- 0292US11133782B2Bias techniques for amplifiers with mixed polarity transistor stacksPSEMI CORP·Filed 2019·Granted Sep 28, 2021·8 cites·32 claims
- 0391US11075604B2RF frequency multiplier without balunPSEMI CORP·Filed 2019·Granted Jul 27, 2021·5 cites·17 claims
- 0490US11711068B2Low loss reflective passive phase shifter using time delay element with double resolutionPSEMI CORP·Filed 2020·Granted Jul 25, 2023·2 cites·26 claims
- 0590US11025207B2Bias techniques for controlled voltage distribution in stacked transistor amplifiersPSEMI CORP·Filed 2019·Granted Jun 1, 2021·8 cites·30 claims
- 0686US11601092B2RF frequency multiplier without balunPSEMI CORP·Filed 2021·Granted Mar 7, 2023·1 cites·21 claims
- 0785US11689161B2Bias techniques for amplifiers with mixed polarity transistor stacksPSEMI CORP·Filed 2021·Granted Jun 27, 2023·1 cites·24 claims
- 0885US2025125790A1Low loss reflective passive phase shifter using time delay element with double resolutionMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 0982US10840889B2Low loss reflective passive phase shifter using time delay element with double resolutionPSEMI CORP·Filed 2019·Granted Nov 17, 2020·2 cites·16 claims
- 1081US12184255B2Low loss reflective passive phase shifter using time delay element with double resolutionMURATA MANUFACTURING CO·Filed 2023·Granted Dec 31, 2024·0 cites·20 claims
- 1181US2025007464A1RF Frequency Multiplier Without BalunMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 1278US12278597B2Bias techniques for amplifiers with mixed polarity transistor stacksPSEMI CORP·Filed 2023·Granted Apr 15, 2025·0 cites·21 claims
- 1377US12034406B2RF frequency multiplier without balunMURATA MANUFACTURING CO·Filed 2023·Granted Jul 9, 2024·0 cites·20 claims
- 1473US10211801B2Hybrid coupler with phase and attenuation controlPSEMI CORP·Filed 2016·Granted Feb 19, 2019·2 cites·59 claims
- 1558US2025038798A1Linearizing Beam-Forming Transmission SystemPSEMI CORP·Filed 2024·Application pending·0 cites
- 1657US10396780B2High frequency phase shifter using limited ground plane transition and switching arrangementPSEMI CORP·Filed 2018·Granted Aug 27, 2019·0 cites·21 claims
- 1755US7288992B2Bias circuit for a bipolar transistorROKE MANOR RESEARCH·Filed 2003·Granted Oct 30, 2007·7 cites·19 claims
- 1852US7372332B2Optimizing power consumption in amplifiersROKE MANOR RESEARCH·Filed 2003·Granted May 13, 2008·6 cites·17 claims
- 1948US2025208163A1Probes, apparatuses and methods for use in scanning probe microscopyYEDA RES & DEV·Filed 2025·Application pending·0 cites
- 2038US2019140622A1Low Loss Reflective Passive Phase Shifter using Time Delay ElementPSEMI CORP·Filed 2018·Application pending·0 cites
- 2135US2012166741A1Data bus for low power tagBIRKBECK JOHN·Filed 2010·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →