Sonos, Inc.
Dual-band antenna topology

Abstract:

An example dual-band antenna includes a substrate and a primary radiator disposed on the substrate and connected to a transmission line for driving the primary radiator, where the primary radiator, when driven via the transmission line, has a first resonant frequency. The dual-band antenna also includes a secondary radiator disposed on the substrate and unconnected to the primary radiator, where the primary radiator, when driven via the transmission line, induces a current in the secondary radiator such that the secondary radiator has a second resonant frequency different from the first resonant frequency.