Multi-band antennas having enhanced directors therein that inhibit radiation interference across multiple frequency bands
US11637373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2021 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Apr 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna includes a first radiating element configured to emit first electromagnetic radiation in response to at least one feed signal having a frequency within a first radio frequency (RF) band. A director is provided, which is positioned forwardly of the first radiating element, and in a path of the first electromagnetic radiation. The director includes first and second passive impedance elements that provide respective first and second frequency-dependent reactances to first currents induced within the director in response to the first electromagnetic radiation. The first and second passive impedance elements may include a first inductor and a first capacitor, which are electrically coupled in series. The director may also be configured to include a plurality of passive impedance elements that are connected within an impedance loop containing a second LC circuit in series with a first LC circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.