Built-in self-test technique for detection of imperfectly connected antenna in OFDM transceivers
US9577769B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Jul 31, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An OFDM communication transceiver, which is configured to test its connection with an antenna circuit unit, has a receiver chain and an emitting chain. The receiver chain includes a time-to-frequency transform unit and the emitting chain includes a frequency-to-time transform unit. The transceiver further includes means for disconnecting the receiver chain to the antenna circuit unit, means for providing a stimulus as input to the emitting chain, means for reintroducing the signal at the output of the emitting chain as an input of the receiving chain, means for determining a circuit resonance frequency, Fr, and a quality factor, Q, of a transfer function computed from the output of the time-to-frequency transform unit, and means for deciding about the connection of said antenna circuit unit according to the resonance frequency and the quality factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.