Millimeter-scale bluetooth low energy transmitter with dual purpose loop antenna
US10911078B1 · kind B1 · utility
1Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Feb 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A millimeter-scale Bluetooth low energy wireless transmitter is presented with a dual purpose loop antenna. The oscillator employs a high quality factor resonator formed by a printed 3.5×3.5 mm2 inductive loop antenna (simulated Q˜110) and an on-chip digitally-switched capacitor array (simulated Q˜283). The oscillator replaces the traditional voltage controlled oscillator plus power amplifier, achieving lower power consumption while maintaining phase noise of −118.5 dBc/Hz at 1 MHz offset that results in low FSK modulation error (2.1%) and low frequency drift during BLE packet transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.