Device for processing or generating a signal (51, 52), having: a substrate; a signal apparatus that is designed to process a reception signal and/or to generate a transmission signal; an interface apparatus by way of which the signal apparatus is able to be coupled to a transceiver antenna in order to transmit the generated transmission signal and/or to receive the reception signal to be processed; a separation apparatus that is designed to separate first signals that run from the interface apparatus to the signal apparatus from second signals (52; 52') that run from the signal apparatus to the interface apparatus; and an output apparatus at which the separated first and second signals (51, 52, 52', 53) are able to be tapped off separately from one another in order to calculate an adjustment; wherein the first signals are able to be tapped off at a first measuring apparatus of the output apparatus and wherein the second signals are able to be tapped off at a second measuring apparatus of the output apparatus; wherein the signal apparatus, the interface apparatus, the separating apparatus and the output apparatus are arranged on the substrate; wherein the separating apparatus is in the form of a four-gate ring coupler having a first gate, a second gate, a third gate and a fourth gate; wherein the signal apparatus is connected at the first gate and at the third gate and wherein the interface apparatus of the device is connected at the fourth gate; wherein the first measuring apparatus is connected to the third gate of the ring coupler and wherein the second measuring apparatus is connected to a second gate of the ring coupler; wherein the signal apparatus furthermore has a mixer that is designed to process the reception signal received via the interface apparatus; wherein the mixer receives, as input signal, a signal that is branched off from the third gate of the ring coupler and the mixer is designed, as oscillator signal, to receive a signal present at the first gate of the ring coupler; and wherein the mixer is designed to generate a payload signal by mixing the input signal and the oscillator signal. a substrate; a signal apparatus that is designed to process a reception signal and/or to generate a transmission signal; an interface apparatus by way of which the signal apparatus is able to be coupled to a transceiver antenna in order to transmit the generated transmission signal and/or to receive the reception signal to be processed; a separation apparatus that is designed to separate first signals that run from the interface apparatus to the signal apparatus from second signals (52; 52') that run from the signal apparatus to the interface apparatus; and an output apparatus at which the separated first and second signals (51, 52, 52', 53) are able to be tapped off separately from one another in order to calculate an adjustment; wherein the first signals are able to be tapped off at a first measuring apparatus of the output apparatus and wherein the second signals are able to be tapped off at a second measuring apparatus of the output apparatus; wherein the signal apparatus, the interface apparatus, the separating apparatus and the output apparatus are arranged on the substrate; wherein the separating apparatus is in the form of a four-gate ring coupler having a first gate, a second gate, a third gate and a fourth gate; wherein the signal apparatus is connected at the first gate and at the third gate and wherein the interface apparatus of the device is connected at the fourth gate; wherein the first measuring apparatus is connected to the third gate of the ring coupler and wherein the second measuring apparatus is connected to a second gate of the ring coupler; wherein the signal apparatus furthermore has a mixer that is designed to process the reception signal received via the interface apparatus; wherein the mixer receives, as input signal, a signal that is branched off from the third gate of the ring coupler and the mixer is designed, as oscillator signal, to receive a signal present at the first gate of the ring coupler; and wherein the mixer is designed to generate a payload signal by mixing the input signal and the oscillator signal.