An apparatus is disclosed for bidirectional amplification with phase-shifting. In example implementations, an apparatus includes a phase shifter with a bidirectional amplifier. The bidirectional amplifier includes a first transistor coupled between a first plus node and a second minus node, a second transistor coupled between a first minus node and a second plus node, a third transistor coupled between the first plus node and the second minus node, and a fourth transistor coupled between the first minus node and the second plus node. The bidirectional amplifier also includes a fifth transistor coupled between the first plus node and the second plus node, a sixth transistor coupled between the first minus node and the second minus node, a seventh transistor coupled between the first plus node and the second plus node, and an eighth transistor coupled between the first minus node and the second minus node.

A power amplifier arrangement comprises a power amplifier comprising at least one transistor having a first gate and a second gate. The first gate is configured to receive a radio frequency input signal superimposed with a first control signal, and the second gate is configured to receive a second control signal. The first control signal is a linearization signal varying in relation to an envelope of the input signal and the second control signal is a temperature compensation signal varying in relation to a temperature of the power amplifier, or vice versa.

A receiver circuit has a first stage circuit having a first stage input and a first stage output, the first stage output setting a first stage common mode voltage; a second stage circuit having a second stage input connected to the first stage output, and a second stage output setting a second stage common mode voltage; and a buffer circuit having a trip point voltage, connected to the second stage output. The first stage circuit can include circuit elements configured to establish the first stage common mode voltage so that the second stage common mode voltage matches the trip point voltage. The second stage circuit can include a self-biased amplifier.

A power amplifier arrangement comprises a power amplifier comprising at least one transistor having a first gate and a second gate. The first gate is configured to receive a radio frequency input signal superimposed with a first control signal, and the second gate is configured to receive a second control signal. The first control signal is a linearization signal varying in relation to an envelope of the input signal and the second control signal is a temperature compensation signal varying in relation to a temperature of the power amplifier, or vice versa.

An apparatus is disclosed for bidirectional amplification with phase-shifting. In example implementations, an apparatus includes a phase shifter with a bidirectional amplifier. The bidirectional amplifier includes a first transistor coupled between a first plus node and a second minus node, a second transistor coupled between a first minus node and a second plus node, a third transistor coupled between the first plus node and the second minus node, and a fourth transistor coupled between the first minus node and the second plus node. The bidirectional amplifier also includes a fifth transistor coupled between the first plus node and the second plus node, a sixth transistor coupled between the first minus node and the second minus node, a seventh transistor coupled between the first plus node and the second plus node, and an eighth transistor coupled between the first minus node and the second minus node.