Inventor · New Milton, GB

John Birkbeck

15Patents

4h-index

3Co-inventors

53Inventor score

Filing activity: Mar 18, 2003 → Jul 19, 2023

Most-cited inventions

Patent	Title	Area	Cited by	Status
US11133782B2	Bias techniques for amplifiers with mixed polarity transistor stacks	Electricity	6	Active
US10075159B1	High frequency phase shifter using limited ground plane transition and switching arrangement	Electricity	5	Active
US11025207B2	Bias techniques for controlled voltage distribution in stacked transistor amplifiers	Electricity	4	Active
US11075604B2	RF frequency multiplier without balun	Electricity	4	Active
US7288992B2	Bias circuit for a bipolar transistor	Electricity	3	Expired
US7372332B2	Optimizing power consumption in amplifiers	Electricity	3	Expired
US10840889B2	Low loss reflective passive phase shifter using time delay element with double resolution	Electricity	2	Active
US11689161B2	Bias techniques for amplifiers with mixed polarity transistor stacks	Electricity	1	Active
US11601092B2	RF frequency multiplier without balun	Electricity	1	Active
US11711068B2	Low loss reflective passive phase shifter using time delay element with double resolution	Electricity	1	Active
US12278597B2	Bias techniques for amplifiers with mixed polarity transistor stacks	Electricity	0	Active
US12184255B2	Low loss reflective passive phase shifter using time delay element with double resolution	Electricity	0	Active
US10211801B2	Hybrid coupler with phase and attenuation control	Electricity	0	Active
US10396780B2	High frequency phase shifter using limited ground plane transition and switching arrangement	Electricity	0	Active
US12034406B2	RF frequency multiplier without balun	Electricity	0	Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.