Abstract:
A CMOS amplifier including electrostatic discharge (ESD) protection circuits is disclosed. In one embodiment, the CMOS amplifier may include a PMOS transistor, a NMOS transistor, primary protection diodes, and one or more auxiliary protection diodes to limit a voltage difference between terminals of the CMOS amplifier. In some embodiments, the auxiliary protection diodes may limit the voltage difference between an input terminal of the CMOS amplifier and a supply voltage, the input terminal of the CMOS amplifier and ground, and the input terminal and the output terminal of the CMOS amplifier.
Abstract:
A dual stage LNA for use in multiband receivers is disclosed. In an exemplary embodiment, an apparatus includes a plurality of first stage amplifiers having a plurality of first stage output ports, respectively, to output first stage amplified voltage mode signals. The apparatus also includes a plurality of second stage amplifiers having a plurality of second stage input ports, respectively, and second stage output ports to output amplified current mode signals. The apparatus also includes a switch apparatus having input terminals connected to the first stage output ports and output terminals connected to the second stage input ports, the switch apparatus to connect selected second stage input ports to selected first stage output ports.
Abstract:
A device includes a multi-mode low noise amplifier (LNA) having a first amplifier stage, and a second amplifier stage coupled to the first amplifier stage, the second amplifier stage having a plurality of amplification paths configured to amplify a plurality of carrier frequencies, the first amplifier stage configured to bypass the second amplifier stage when the first amplifier stage is configured to amplify a single carrier frequency.
Abstract:
A device includes a load circuit configured to receive an amplified communication signal, the load circuit having a center tapped inductor structure configured to divide the amplified communication signal into a first portion and a second portion, the load circuit configured to resonate at a harmonic of the amplified communication signal.