Inventor
Zhiheng Cao
Inventor
San Diego, CA, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers29%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner14%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses14%
H03MCoding14%
G08BSignalling systems, e.g. personal calling systems7%
H03HImpedance networks, e.g. resonant circuits7%
H04BTransmission7%
H04LTransmission of digital information, e.g. telegraphic communication7%
PatentTitleYear
10,511,322High-speed digital transmitter for wireless communication systems20198,723,610'Voltage controlled oscillator'20148,659,419'Method and apparatus for preventing person, animals or items from getting lost'20148,493,156'High amplitude voltage-controlled oscillator with dynamic bias circuit'20138,384,573'Low-power digital-to-analog converter'20137,948,312'Multi-bit class-D power amplifier system'20117,944,309'Transconductance bias circuit, amplifier and method'20117,746,177'Self-biased bipolar ring-oscillator phase-locked loops with wide tuning range'20107,595,678'Switched-capacitor circuit'2009Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009Based in Dallas, TX, US· patent location history
2010–2013Based in San Diego, CA, US· patent location history
2011Patents assigned to QUALCOMM INC (2)· patent assignee history
2013–2014Patents assigned to CAO ZHIHENG (4)· patent assignee history
2013–2014Patents assigned to BROADCOM CORP (2)· patent assignee history
2013–2019Based in Irvine, CA, US· patent location history
2014Patents assigned to DOU QINGQI (1)· patent assignee history
2014Based in Aliso Viejo, CA, US· patent location history
2019Patents assigned to AVAGO TECH INT SALES PTE LID (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CAO ZHIHENGself | 4 | 2013–2014 |
| BROADCOM CORP | 2 | 2013–2014 |
| QUALCOMM INC | 2 | 2011 |
| AVAGO TECH INT SALES PTE LID | 1 | 2019 |
| DOU QINGQI | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Diego, California, US | 4 | 2010–2013 |
| Irvine, California, US | 3 | 2013–2019 |
| Aliso Viejo, California, US | 1 | 2014 |
| Dallas, Texas, US | 1 | 2009 |