Abstract:
An apparatus includes a first transistor configured to amplify first signal components within a first frequency band of a radio frequency signal, a second transistor configured to amplify second signal components within a second frequency band of the radio frequency signal, and a third transistor configured to amplify third signal components within a third frequency band of the radio frequency signal. The apparatus also includes a degeneration inductor having a first tapping point, a second tapping point, and a third tapping point. The first tapping point is coupled to the first transistor, the second tapping point is coupled to the second transistor, and the third tapping point is coupled to the third transistor.
Abstract:
An area efficient baseband filter is disclosed. In an exemplary embodiment, an apparatus includes a current to voltage (I-V) filter configured to receive an input current signal at an input port and generate a filtered output voltage signal at an output port based on a feedback transconductance. The input current signal comprises an input DC current in addition to a signal current. The apparatus also includes a feedback circuit connected between the output port and the input port, the feedback circuit having at least one transistor configured to couple the input DC current to a signal ground and to provide the feedback transconductance for the I-V filter.
Abstract:
A receiver front end architecture for intra band carrier aggregation is disclosed. In an exemplary embodiment, an apparatus includes a first transistor having a gate terminal to receive an input signal, drain terminal to output an amplified signal, and a source terminal connected to a signal ground by a source degeneration inductor. The apparatus also includes a second transistor having a source terminal connected to the drain terminal of the first transistor and a drain terminal connected to a first load. The apparatus also includes a third transistor having a gate terminal connected to the drain terminal of the first transistor, a drain terminal connected to a second load and a source terminal connected to a signal ground.
Abstract:
A receiver front end architecture for intra band carrier aggregation is disclosed. In an exemplary embodiment, an apparatus includes a first transistor having a gate terminal to receive an input signal, drain terminal to output an amplified signal, and a source terminal connected to a signal ground by a source degeneration inductor. The apparatus also includes a second transistor having a source terminal connected to the drain terminal of the first transistor and a drain terminal connected to a first load. The apparatus also includes a third transistor having a gate terminal connected to the drain terminal of the first transistor, a drain terminal connected to a second load and a source terminal connected to a signal ground.
Abstract:
An area efficient baseband filter is disclosed. In an exemplary embodiment, an apparatus includes a current to voltage (I-V) filter configured to receive an input current signal at an input port and generate a filtered output voltage signal at an output port based on a feedback transconductance. The input current signal comprises an input DC current in addition to a signal current. The apparatus also includes a feedback circuit connected between the output port and the input port, the feedback circuit having at least one transistor configured to couple the input DC current to a signal ground and to provide the feedback transconductance for the I-V filter.