摘要:
A receiver includes a first amplifier and a second amplifier, a first mixer, a second mixer and a third mixer, a first baseband signal path and a second baseband signal path. A signal output of the first amplifier is coupled to a signal input of the first mixer and a signal input of the second mixer. A signal output of the second amplifier is coupled to a signal input of the third mixer. A signal output of the first mixer and a signal output of the third mixer are coupled to the first baseband signal path. A signal output of the second mixer is coupled to the second baseband signal path.
摘要:
A receiver includes a first amplifier and a second amplifier, a first mixer, a second mixer and a third mixer, a first baseband signal path and a second baseband signal path. A signal output of the first amplifier is coupled to a signal input of the first mixer and a signal input of the second mixer. A signal output of the second amplifier is coupled to a signal input of the third mixer. A signal output of the first mixer and a signal output of the third mixer are coupled to the first baseband signal path. A signal output of the second mixer is coupled to the second baseband signal path.
摘要:
One embodiment of the present invention relates to a dual mode receiver that includes an RF splitter configured to operate in two modes, wherein in a first mode a single low noise amplifier is active to receive an RF input signal, and in a second mode two low noise amplifiers are active to receive the RF input signal. The receiver further includes a programmable degeneration component operably coupled to the RF splitter, and configured to provide a first performance characteristic in the first mode, and a second, different performance characteristic in the second mode, wherein the first and second performance characteristics influence an input impedance of the RF splitter to be substantially the same in the first and second modes.
摘要:
One embodiment of the present invention relates to a dual mode receiver that includes an RF splitter configured to operate in two modes, wherein in a first mode a single low noise amplifier is active to receive an RF input signal, and in a second mode two low noise amplifiers are active to receive the RF input signal. The receiver further includes a programmable degeneration component operably coupled to the RF splitter, and configured to provide a first performance characteristic in the first mode, and a second, different performance characteristic in the second mode, wherein the first and second performance characteristics influence an input impedance of the RF splitter to be substantially the same in the first and second modes.
摘要:
An inverting stage is coupled between a single-ended in-put node and a first differential output node, and a non-inverting stage is coupled between the single-ended input node and a second differential output node. The inverting stage includes at least one transistor with a first current terminal, a second current terminal, and a control terminal, the first current terminal being coupled to the first differential output node and the control terminal being coupled to a single-ended input node. The non-inverting stage includes at least one transistor with a first current terminal, a second current terminal, and a control terminal, the first current terminal being coupled to the second differential output node, and the second terminal being coupled to the single-ended input node. A bias current of the inverting stage is larger than a bias current of the non-inverting stage.
摘要:
The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal.
摘要:
The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal.
摘要:
An inverting stage is coupled between a single-ended in-put node and a first differential output node, and a non-inverting stage is coupled between the single-ended input node and a second differential output node. The inverting stage includes at least one transistor with a first current terminal, a second current terminal, and a control terminal, the first current terminal being coupled to the first differential output node and the control terminal being coupled to a single-ended input node. The non-inverting stage includes at least one transistor with a first current terminal, a second current terminal, and a control terminal, the first current terminal being coupled to the second differential output node, and the second terminal being coupled to the single-ended input node. A bias current of the inverting stage is larger than a bias current of the non-inverting stage.