Radio frequency receiver
OwnerRachid Waffaoui El, Jan Van Sindereninventors
Life of this patent
Estimating the term…
Abstract
A radio frequency receiver with quadrature mixing and means for analog to digital converting the I and Q signals obtained from the quadrature mixing. To improve the image suppression the analog to digital converting means are multiplexed between the channels of the I and Q signals.
Claims5
A radio frequency receiver comprising I and Q channels (6,7) with I and Q mixing stages (3,4) respectively for quadrature mixing a radio frequency input signal with 90° phase shifted local oscillator signals, and I and Q selectivity filters (8,9) for filtering the output signals of said I and Q mixing stages respectively, said receiver further comprising analog to digital converter means for analog to digital converting the analog signals of said two channels, characterized in that the analog to digital converting means comprise an analog to digital-converter (16) which is multiplexed between the two channels (6,7) to operate sequentially for converting the analog signals of said two channels.
Dependencies are inferred from the claim text.