Electronic circuit, module, and system

An electronic circuit comprising:

• a load that is driven by power supplied from a power source;
• a load switch that is connected between the power source and the load and switches a connection state between the power source and the load to any one of a conductive state of supplying power from the power source to the load and a non-conductive state of cutting off power supplied from the power source to the load;
• a first power conversion circuit that outputs first DC power based on first power obtained by a first radio wave received by a first antenna;
• a second power conversion circuit that outputs second DC power based on second power obtained by a second radio wave received by a second antenna;
• and
• a control circuit that has a first input terminal connected to the first power conversion circuit, a second input terminal connected to the second power conversion circuit, and an output terminal of turning the load switch into a conductive state when the first DC power is input to the first input terminal and turning the load switch into a non-conductive state when the second DC power is input to the second input terminal,
• wherein the load switch is controlled to maintain a conductive state even when the second antenna receives the second radio wave in a conductive state.