US 11,057,061 B2 · Wireless radio system optimization by persistent spectrum analysis

Abstract

Apparatuses and methods for simultaneously operating as a wireless radio and monitoring the local frequency spectrum. For example, described herein are wireless radio devices that use a secondary receiver to monitor frequencies within the operating band and prevent or avoid interferers, including in particular half-IF interferers. The systems, devices, and methods described herein may adjust the intermediate frequency in a superheterodyne receiver to select an intermediate frequency that minimizes interference. In particular, described herein are apparatuses and methods that use a second receiver which is independent of the first receiver and may be connected to the same receiving antenna to monitor the geographically local frequency spectrum and may detect spurious interferers, allowing the primary receiver to adjust the intermediate frequency and avoid spurious interferes.

Claims20

Dependent claims

A wireless radio device configured to select among a plurality of intermediate frequencies to minimize interference, the device comprising:

one or more antennas;
a first receiver coupled to the one or more antennas and configured to receive a radio-frequency (RF) signal;
a second receiver coupled to the one or more antennas, the second receiver configured as a spectrum analyzer to monitor a frequency spectrum and to detect spurious interferers;
a mixer configured to generate a first intermediate frequency signal from the RF signal by mixing the RF signal with a local oscillation signal having a local oscillation frequency;
and
one or more controllers configured to switch the first intermediate frequency to a second intermediate frequency if an interference in the RF signal exceeds a frequency threshold, wherein the one or more controllers is configured to process an RF signal received from the second receiver while switching the first intermediate frequency to the second intermediate frequency to prevent an interruption in data traffic during the switching.

3 more elements

Dependencies are inferred from the claim text.

Wireless radio system optimization by persistent spectrum analysis

Life of this patent

Wireless radio system optimization by persistent spectrum analysis

Life of this patent

Abstract

Claims20