Dual stage low noise amplifier for multiband receiver

摘要

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.

主权项

1. An apparatus comprising:
a plurality of first stage amplifiers having a plurality of first stage output ports, respectively, to output first stage amplified voltage mode signals; 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; and a switch apparatus having input terminals coupled to the first stage output ports and output terminals coupled to the second stage input ports, the switch apparatus configured to couple selected first stage output ports to selected second stage input ports, wherein the switch apparatus is configured such that at least one of the plurality of first stage output ports may be selectively coupled to any of multiple input ports of the plurality of second stage input ports.