Bidirectional interface port
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsUfuk Özdemir, Kirill Kozmin, Peter Caputa
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Abstract
An interface port (10) for a bidirectional interface is presented. The interface port (10) comprises an input terminal (12) operatively connected to an input of a first active inductor (100), an output terminal (13) operatively connected to an output of a second active inductor (200), and a bidirectional terminal (11) operatively connected to an output of the first active inductor (100) and to an input of the second active inductor (200). Each of the first and second active inductor (100, 200) respectively comprises a forward transconductance stage and a feedback transconductance stage. An associated electric circuitry, electronic apparatus, electric system and a method of control are also disclosed.
Claims20
An interface port for a bidirectional interface comprising:
- an input terminal operatively connected to an input of a first active inductor;
- an output terminal operatively connected to an output of a second active inductor;
- and
- a bidirectional terminal operatively connected to an output of the first active inductor and to an input of the second active inductor, wherein
- each of the first and second active inductors respectively comprises a forward transconductance stage and a feedback transconductance stage, wherein
- the forward transconductance stage of the first active inductor is configured to rotate a signal provided at the input terminal 180° before the signal arrives at the output terminal.
An electric system, comprising:
- a first interface port comprising:
- a first input terminal operatively connected to an input of a first active inductor comprising a first forward transconductance stage and a first feedback transconductance stage;
- an first output terminal operatively connected to an output of a second active inductor comprising a second forward transconductance stage and a second feedback transconductance stage;
- and
- a first bidirectional terminal operatively connected to an output of the first active inductor and to an input of the second active inductor;
- a second interface port port comprising:
- a second input terminal operatively connected to an input of a third active inductor comprising a third forward transconductance stage and a third feedback transconductance stage;
- a second output terminal operatively connected to an output of a fourth active inductor comprising a fourth forward transconductance stage and a fourth feedback transconductance stage;
- and
- a bidirectional terminal operatively connected to an output of the third active inductor and to an input of the fourth active inductor;
- and
- a bidirectional interface, wherein
- the bidirectional interface is arranged to electrically connect the first bidirectional terminal of the first interface port to the second bidirectional terminal of the second interface port.
A method of controlling a bidirectional interface connecting a first bidirectional terminal of a first interface port to a second bidirectional terminal of a second interface port, wherein the method comprises:
- entering a first mode of operation, wherein entering the first mode of operation comprises:
- enabling a first active inductor of the first interface port, wherein the first active inductor comprises a first forward transconductance stage and a first feedback transconductance stage;
- disabling a second active inductor of the first interface port, wherein the second active inductor comprises a second forward transconductance stage and a second feedback transconductance stage;
- enabling a third active inductor of the second interface port, wherein the third active inductor comprises a third forward transconductance stage and a third feedback transconductance stage;
- and
- disabling a fourth active inductor of the second interface port, wherein the fourth active inductor comprises a fourth forward transconductance stage and a fourth feedback transconductance stage;
- and
- entering a second mode of operation, wherein entering the second mode of operation comprises:
- disabling the first active inductor of the first interface port;
- enabling the second active inductor of the first interface port;
- disabling the third active inductor of the second interface port;
- and
- enabling the fourth active inductor of the second interface port.
Dependencies are inferred from the claim text.