Direct conversion digital domain control

Claim 1

A method for suppressing jammer leakage in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, and a local oscillator (LO); and adjusting drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjusting LO drive level comprises: measuring signal power of baseband signals; measuring power of the received RF signals; comparing the signal power of baseband signals with the power of the received RF signals; and adjusting a setpoint of the LO based on the comparing.

Claim 2

A method for suppressing jammer leakage in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, and a local oscillator (LO); and adjusting drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjusting LO drive level comprises: measuring signal power of baseband signals; measuring power of the received RF signals; comparing the signal power of baseband signals with the power of the received RF signals; and adjusting a setpoint of the LO based on the comparing.

Claim 9

A method for suppressing jammer leakage in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, and a local oscillator (LO); and adjusting drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjusting LO drive level comprises: measuring signal power of baseband signals; measuring power of the received RF signals; comparing the signal power of baseband signals with the power of the received RF signals; and adjusting a setpoint of the LO based on the comparing; further comprising adjusting gain of the LNA and the mixer based on the measured signal power of baseband signals.

Claim 10

A method for suppressing jammer leakage in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, and a local oscillator (LO); and adjusting drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjusting LO drive level comprises: measuring signal power of baseband signals; measuring power of the received RF signals; comparing the signal power of baseband signals with the power of the received RF signals; and adjusting a setpoint of the LO based on the comparing; further comprising adjusting gain of the LNA and the mixer based on the measured signal power of baseband signals.

Claim 11

A method for suppressing jammer leakage in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, and a local oscillator (LO); and adjusting drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjusting LO drive level comprises: measuring signal power of baseband signals; measuring power of the received RF signals; comparing the signal power of baseband signals with the power of the received RF signals; and adjusting a setpoint of the LO based on the comparing; further comprising adjusting gain of the LNA and the mixer based on the measured signal power of baseband signals; wherein the adjusting the LNA and mixer gain comprises lowering the gain as the signal power of the received RF signals increases.

Claim 12

A method for suppressing jammer leakage in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, and a local oscillator (LO); and adjusting drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjusting LO drive level comprises: measuring signal power of baseband signals; measuring power of the received RF signals; comparing the signal power of baseband signals with the power of the received RF signals; and adjusting a setpoint of the LO based on the comparing; further comprising adjusting gain of the LNA and the mixer based on the measured signal power of baseband signals; wherein the adjusting the LNA and mixer gain comprises lowering the gain as the signal power of the received RF signals increases.

Claim 13

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison.

Claim 14

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison.

Claim 23

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the first measurement mechanism includes: an RF power detector configured to output an analog signal representing power of the received RF signals; an analog-to-digital converter (ADC) having an output and an input coupled to the RF power detector output; and a summer having a first input coupled to the ADC output and a second input coupled to an offset signal, the summer being configured to produce an output signal that represents the total power of the received RF signals.

Claim 24

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the first measurement mechanism includes: an RF power detector configured to output an analog signal representing power of the received RF signals; an analog-to-digital converter (ADC) having an output and an input coupled to the RF power detector output; and a summer having a first input coupled to the ADC output and a second input coupled to an offset signal, the summer being configured to produce an output signal that represents the total power of the received RF signals.

Claim 25

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the second measurement mechanism includes: a calculator configured to determine instantaneous power of baseband signals; an integrator having an input coupled to the calculator, the integrator determining average signal power of the baseband signals and outputting an automatic gain control (AGC) signal; and a summer configured to sum a log power representation of the AGC signal with an RF offset, the RF offset accounting for adjustments to gain of the LNA and the mixer, the summer being configured to output signal power of baseband signals.

Claim 26

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the second measurement mechanism includes: a calculator configured to determine instantaneous power of baseband signals; an integrator having an input coupled to the calculator, the integrator determining average signal power of the baseband signals and outputting an automatic gain control (AGC) signal; and a summer configured to sum a log power representation of the AGC signal with an RF offset, the RF offset accounting for adjustments to gain of the LNA and the mixer, the summer being configured to output signal power of baseband signals.

Claim 27

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the second measurement mechanism includes: a calculator configured to determine instantaneous power of baseband signals; an integrator having an input coupled to the calculator, the integrator determining average signal power of the baseband signals and outputting an automatic gain control (AGC) signal; and a summer configured to sum a log Power representation of the AGC signal with an RF offset, the RF offset accounting for adjustments to gain of the LNA and the mixer, the summer being configured to output signal power of baseband signals; wherein the calculator includes a multiplier configured to square signal levels of the I channel of the receiver.

Claim 28

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the second measurement mechanism includes: a calculator configured to determine instantaneous power of baseband signals; an integrator having an input coupled to the calculator, the integrator determining average signal power of the baseband signals and outputting an automatic gain control (AGC) signal; and a summer configured to sum a log Power representation of the AGC signal with an RF offset, the RF offset accounting for adjustments to gain of the LNA and the mixer, the summer being configured to output signal power of baseband signals; wherein the calculator includes a multiplier configured to square signal levels of the I channel of the receiver.

Claim 29

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal rower of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the second measurement mechanism includes: a calculator configured to determine instantaneous power of baseband signals; an integrator having an input coupled to the calculator, the integrator determining average signal power of the baseband signals and outputting an automatic gain control (AGC) signal; and a summer configured to sum a log power representation of the AGC signal with an RF offset, the RF offset accounting for adjustments to gain of the LNA and the mixer, the summer being configured to output signal power of baseband signals; wherein the calculator includes a look-up table including instantaneous power values associated with signal levels of the I channel of the receiver.

Claim 30

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal rower of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the second measurement mechanism includes: a calculator configured to determine instantaneous power of baseband signals; an integrator having an input coupled to the calculator, the integrator determining average signal power of the baseband signals and outputting an automatic gain control (AGC) signal; and a summer configured to sum a log power representation of the AGC signal with an RF offset, the RF offset accounting for adjustments to gain of the LNA and the mixer, the summer being configured to output signal power of baseband signals; wherein the calculator includes a look-up table including instantaneous power values associated with signal levels of the I channel of the receiver.

Claim 31

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the comparison mechanism subtracts the total power of the received RF signals from the signal power of the baseband signals.

Claim 32

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; wherein the adjustment mechanism comprises: a first measurement mechanism configured to measure total power of the received RF signals; a second measurement mechanism configured to measure signal power of baseband signals; a comparison mechanism configured to compare the total power of the received RF signals with the signal power of baseband signals; and an adjustor configured to adjust a setpoint of the LO based on the comparison; wherein the comparison mechanism subtracts the total power of the received RF signals from the signal power of the baseband signals.

Claim 33

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; further comprising a DC cancellation mechanism configured to remove a DC offset from a downconverted baseband signal; wherein the DC cancellation mechanism includes a digital DC cancellation module configured to subtract the DC offset from the downconverted baseband signal wherein the digital DC cancellation module is configured to operate in a fast and a slow mode, the modes having different integration rates.

Claim 34

A system for suppressing jammer leakage in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; and an adjustment mechanism configured to adjust drive level of the LO depending on a level of jammers detected by the receiver; further comprising a DC cancellation mechanism configured to remove a DC offset from a downconverted baseband signal; wherein the DC cancellation mechanism includes a digital DC cancellation module configured to subtract the DC offset from the downconverted baseband signal wherein the digital DC cancellation module is configured to operate in a fast and a slow mode, the modes having different integration rates.

Claim 35

A method for optimizing dynamic range in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, a local oscillator (LO), and a baseband portion; adjusting gain of the LNA and the mixer depending on a level of the received RF signals; and adjusting drive level of the LO depending on a level of jammers detected by the receiver.

Claim 36

A method for optimizing dynamic range in a multi-band direct conversion wireless communication device, the method comprising: providing a receiver configured to receive RF signals, the receiver including a low noise amplifier (LNA), a mixer having an input and an output, a local oscillator (LO), and a baseband portion; adjusting gain of the LNA and the mixer depending on a level of the received RF signals; and adjusting drive level of the LO depending on a level of jammers detected by the receiver.

Claim 46

A system for optimizing dynamic range in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; a baseband portion coupled to the mixer output; and an adjustment mechanism configured to adjust gain of the LNA and the mixer depending on a level of the received RF signals and drive level of the LO depending on a level of jammers detected by the receiver.

Claim 47

A system for optimizing dynamic range in a multi-band direct conversion wireless communication receiver, the system comprising: a low noise amplifier (LNA) configured to amplify received RF signals; a local oscillator (LO) configured to output a frequency; a mixer having a first input operatively coupled to the LNA, a second input operatively coupled to the LO output, and an output; a baseband portion coupled to the mixer output; and an adjustment mechanism configured to adjust gain of the LNA and the mixer depending on a level of the received RF signals and drive level of the LO depending on a level of jammers detected by the receiver.