H03J 7/047
Automatic frequency control using an auxiliary signal
Official title: {Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal}
H03J7/047 (Automatic frequency control using an auxiliary signal) appears on 38 US grants and 15 published applications in this corpus.
Search patents in H03J- Granted patents
- 38
- Published applications
- 15
- Assignees
- 21
- Inventors
- 51
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1980 | 1 | 0 |
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| 2001 | 4 | 1 |
| 2002 | 5 | 4 |
| 2003 | 1 | 1 |
| 2004 | 5 | 0 |
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| 2014 | 2 | 0 |
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| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Universal automatic frequency control for multi-channel receivers27 Jan 2026US 12,537,513 B2Sirius XM Radio Inc.
- Universal automatic frequency control for multi-channel receivers30 Apr 2024US 11,973,492 B2Sirius XM Radio Inc.
- Universal automatic frequency control for multi-channel receivers13 Sep 2022US 11,444,602 B2Sirius XM Radio Inc.
- Universal automatic frequency control for multi-channel receivers23 Jun 2020US 10,693,442 B1Sirius XM Radio Inc.
- Methods and apparatus supporting controlled transmission and reception of messages11 Sep 2018US 10,075,149 B2QUALCOMM Incorporated
- Universal automatic frequency control for multi-channel receivers27 Mar 2025US 2025/0105824 A1Sirius XM Radio Inc.
- Universal automatic frequency control for multi-channel receivers10 Aug 2023US 2023/0253954 A1Sirius XM Radio Inc.
- Universal automatic frequency control for multi-channel receivers13 May 2021US 2021/0143799 A1Sirius XM Radio Inc.
- Methods and apparatus supporting controlled transmission and reception of messages26 Apr 2018US 2018/0115305 A1QUALCOMM Incorporated
- Antenna Tuning in a Modular Portable Communication Device25 Aug 2016US 2016/0248401 A1Motorola Mobility LLC
Most cited
By later US patents
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- GPS receiver utilizing a communication link582US 5,841,396 ASnapTrack, Inc. · 1998
- Distributed satellite position system processing and application network542US 6,185,427 B2SnapTrack, Inc. · 2001
- Method and apparatus for determining time for GPS receivers476US 5,945,944 ASnapTrack, Inc. · 1999
- GPS receiver utilizing a communication link451US 6,064,336 ASnapTrack, Inc. · 2000