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New Milton, United Kingdom

John Birkbeck

Average Co-Inventor Count = 1.22

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 38

John BirkbeckKashish Pal (4 patents)John BirkbeckVikas Sharma (3 patents)John BirkbeckMark James O'Leary (3 patents)John BirkbeckJohn Birkbeck (15 patents)Kashish PalKashish Pal (25 patents)Vikas SharmaVikas Sharma (34 patents)Mark James O'LearyMark James O'Leary (15 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Psemi Corporation (11 from 657 patents)

2. Murata Manufacturing Co., Ltd. (2 from 13,692 patents)

3. Roke Manor Research Limited (2 from 139 patents)


15 patents:

1. 12278597 - Bias techniques for amplifiers with mixed polarity transistor stacks

2. 12184255 - Low loss reflective passive phase shifter using time delay element with double resolution

3. 12034406 - RF frequency multiplier without balun

4. 11711068 - Low loss reflective passive phase shifter using time delay element with double resolution

5. 11689161 - Bias techniques for amplifiers with mixed polarity transistor stacks

6. 11601092 - RF frequency multiplier without balun

7. 11133782 - Bias techniques for amplifiers with mixed polarity transistor stacks

8. 11075604 - RF frequency multiplier without balun

9. 11025207 - Bias techniques for controlled voltage distribution in stacked transistor amplifiers

10. 10840889 - Low loss reflective passive phase shifter using time delay element with double resolution

11. 10396780 - High frequency phase shifter using limited ground plane transition and switching arrangement

12. 10211801 - Hybrid coupler with phase and attenuation control

13. 10075159 - High frequency phase shifter using limited ground plane transition and switching arrangement

14. 7372332 - Optimizing power consumption in amplifiers

15. 7288992 - Bias circuit for a bipolar transistor

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12/26/2025
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