A receiver circuit, comprising: an amplifier configured to generate an RF signal based on a received signal, wherein the RF signal comprises an information signal and a blocker signal modulating an RF carrier frequency; a single phase mixer connected to the amplifier, wherein the single phase mixer is configured to receive the RF signal and to downconvert the RF signal to a baseband signal, wherein the baseband signal comprises the information signal and the blocker signal modulating a baseband carrier frequency, and wherein the baseband carrier frequency is less than the RF carrier frequency; an RF filter connected to the amplifier, wherein the RF filter is configured to attenuate the blocker signal in response to a control signal generated by a controller; wherein the receiver circuit further comprises a variable gain amplifier configured to process the baseband signal, the controller is configured to generate the control signal in response to the input or output signals at the variable gain amplifier which exceeds an input or output range limit of the variable gain amplifier for the RF filter, wherein, in response to the control signals, the RF filter is configured to attenuate the blocker signal; or wherein the receiver circuit comprises an analog-to-digital converter configured to process the baseband signal, and the controller is configured to generate the control signal in response to the input or output signals at the analog-to-digital converter which exceeds an input or output range limit of the analog-to-digital converter for the RF filter, wherein, in response to the control signals, the RF filter is configured to attenuate the blocker signal. an amplifier configured to generate an RF signal based on a received signal, wherein the RF signal comprises an information signal and a blocker signal modulating an RF carrier frequency; a single phase mixer connected to the amplifier, wherein the single phase mixer is configured to receive the RF signal and to downconvert the RF signal to a baseband signal, wherein the baseband signal comprises the information signal and the blocker signal modulating a baseband carrier frequency, and wherein the baseband carrier frequency is less than the RF carrier frequency; an RF filter connected to the amplifier, wherein the RF filter is configured to attenuate the blocker signal in response to a control signal generated by a controller; wherein the receiver circuit further comprises a variable gain amplifier configured to process the baseband signal, the controller is configured to generate the control signal in response to the input or output signals at the variable gain amplifier which exceeds an input or output range limit of the variable gain amplifier for the RF filter, wherein, in response to the control signals, the RF filter is configured to attenuate the blocker signal; or wherein the receiver circuit comprises an analog-to-digital converter configured to process the baseband signal, and the controller is configured to generate the control signal in response to the input or output signals at the analog-to-digital converter which exceeds an input or output range limit of the analog-to-digital converter for the RF filter, wherein, in response to the control signals, the RF filter is configured to attenuate the blocker signal.