Multiple signal path antenna circuit having differential attenuation between signal paths

An antenna circuit, comprising:

• at least two signal paths;
• an antenna connection device connected to an output via the at least two signal paths and to which at least one first antenna is capable of being attached, wherein:
• a transmission of a second antenna signal via a second one of the at least two signal paths is attenuated by a predetermined attenuation value in comparison with a transmission of a first antenna signal via a first one of the at least two signal paths;
• an analyzer unit for determining a level of a weighting signal derived from at least one of the first antenna signal and the second antenna signal transmitted to the output;
• an operating device for connecting only the first one of the at least two signal paths to the output when the determined level of the weighting signal is below a first predetermined level, and for connecting only the second one of the at least two signal paths to the output when the determined level of the weighting signal is above the first predetermined level, wherein:
• the second one of the at least two signal paths is diverted from the first one of the at least two signal paths, and
• the second one of the at least two signal paths has an attenuation that is higher by the predetermined attenuation value in comparison with that of the first one of the at least two signal paths;
• and
• a transformer, wherein:
• the second one of the at least two signal paths is diverted from the first one of the at least two signal paths in accordance with an operation of the transformer.

An antenna circuit, comprising:

• at least two signal paths;
• an antenna connection device connected to an output via the at least two signal paths and to which at least one first antenna is capable of being attached, wherein:
• a transmission of a second antenna signal via a second one of the at least two signal paths is attenuated by a predetermined attenuation value in comparison with a transmission of a first antenna signal via a first one of the at least two signal paths;
• an analyzer unit for determining a level of a weighting signal derived from at least one of the first antenna signal and the second antenna signal transmitted to the output;
• and
• an operating device for connecting only the first one of the at least two signal paths to the output when the determined level of the weighting signal is below a first predetermined level, and for connecting only the second one of the at least two signal paths to the output when the determined level of the weighting signal is above the first predetermined level, wherein:
• the weighting signal corresponds to a control signal derived from a received antenna signal in a radio receiver connected to the output, and
• a level of the control signal increases with an intermodulation interference in the received antenna signal.