Patent ID: 8094704
Filing Date: 2012-01-10
Classification: H04W

Abstract:
1. A wireless system, comprising: a spectrum analyzer configured to acoustically discriminate spectral content of an input electrical signal in multiple discrete frequency channels, the spectrum analyzer comprising: multiple channel-defining acoustic resonators each having a different respective resonant response defining a corresponding one of the multiple discrete frequency channels, wherein the multiple channel-defining acoustic resonators each comprise a BAW resonator; and an input bulk acoustic wave (BAW) resonator acoustically coupled to the channel-defining acoustic resonators; a detector configured to determine respective statuses of the frequency channels from the acoustically discriminated spectral content, wherein the detector is operable to assign an availability state to each of the frequency channels based on the acoustically discriminated spectral content; and a controller configured to select at least one of the frequency channels based on the determined statuses of the frequency channels, wherein the controller is operable to select one of the frequency channels having an unoccupied availability state.