Calibration circuit board and antenna apparatus including the same
US11985761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2021 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Jul 3, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10098
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A calibration circuit board for an antenna. The calibration circuit board may include: a first metal layer configured to be grounded; a first substrate over the first metal layer; a second substrate over the first substrate; and a plurality of couplers. Each coupler may include: a transmission line provided with an input port and an output port at both ends thereof, respectively; and a coupling line coupled with the transmission line and including two first portions respectively located at both sides of the transmission line, and a second portion connected between the two first portions. The coupling lines may be connected in series to provide a first calibration port and a second calibration port. One of the transmission lines and the coupling lines may be between the first substrate and the second substrate, and the other of the transmission lines and the coupling lines may be over the second substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.