Patent ID: 7937052
Filing Date: 2011-05-03
Classification: H04B

Abstract:
1. A multiple input multiple output (MIMO) signal receiving apparatus comprising: a first antenna configured to receive a first radio frequency (RF) signal; a second antenna configured to receive a second RF signal; a superheterodyne receiver configured to convert one or both of the first and second RF signals into at least one first analog signal; a direct conversion receiver configured to convert one or both of the first and second RF signals into at least one second analog signal; an antenna switching module coupling the first and second antennas to the superheterodyne receiver and to the direct conversion receiver, wherein the antenna switching module is configured to selectively direct the first and second RF signals to the superheterodyne receiver and/or the direct conversion receiver in response to an antenna switch control signal indicating a signal quality derived from the first and second analog signals; a first analog-to-digital converter configured to convert the first analog signal generated by the superheterodyne receiver into a first digital signal; a second analog-to-digital converter configured to convert the second analog signal generated by the direct conversion receiver into a second digital signal; a signal processing module coupled between the first and second analog-to-digital converters and the antenna switch module, wherein the signal processing module is configured to generate the antenna switch control signal in order to control the antenna switch module to selectively direct the first and second RF signals to the superheterodyne receiver and/or the direct conversion receiver in response to the first and second digital signals, and wherein the signal processing module is further configured to generate a first receiver control signal to selectively enable or disable the superheterodyne receiver in response to the first and second digital signals.