John Birkbeck — 15 Patents at Psemi

John Birkbeck has been granted 15 US patents while listed as an inventor at Psemi. The first was granted in 2007 and the most recent in April 2025. John Birkbeck ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list John Birkbeck in New Milton, GB.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #	Title	Co-Inventors	Date
12278597	Bias techniques for amplifiers with mixed polarity transistor stacks	—	2025-04-15
12184255	Low loss reflective passive phase shifter using time delay element with double resolution	Vikas Sharma, Kashish Pal, Mark O'Leary	2024-12-31
12034406	RF frequency multiplier without balun	—	2024-07-09
11711068	Low loss reflective passive phase shifter using time delay element with double resolution	Vikas Sharma, Kashish Pal, Mark O'Leary	2023-07-25
11689161	Bias techniques for amplifiers with mixed polarity transistor stacks	—	2023-06-27
11601092	RF frequency multiplier without balun	—	2023-03-07
11133782	Bias techniques for amplifiers with mixed polarity transistor stacks	—	2021-09-28
11075604	RF frequency multiplier without balun	—	2021-07-27
11025207	Bias techniques for controlled voltage distribution in stacked transistor amplifiers	Kashish Pal	2021-06-01
10840889	Low loss reflective passive phase shifter using time delay element with double resolution	Vikas Sharma, Kashish Pal, Mark O'Leary	2020-11-17
10396780	High frequency phase shifter using limited ground plane transition and switching arrangement	—	2019-08-27
10211801	Hybrid coupler with phase and attenuation control	—	2019-02-19
10075159	High frequency phase shifter using limited ground plane transition and switching arrangement	—	2018-09-11
7372332	Optimizing power consumption in amplifiers	—	2008-05-13
7288992	Bias circuit for a bipolar transistor	—	2007-10-30

John Birkbeck — 15 Patents

Issued Patents All Time

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