Antenna and mobile terminal

A mobile terminal, comprising:

• an antenna comprising:
• a first radiation part configured to generate a first frequency, the first radiation part comprising:
• a first radiator comprising a first end and a second end;
• a second radiator comprising:
• a first end connected to the second end of the first radiator using a capacitor structure;
• and
• a second end connected to a grounding part;
• and
• the capacitor structure;
• a matching circuit;
• and
• a feed source connected to the first end of the first radiator using the matching circuit, the feed source further connected to the grounding part;
• a radio frequency processor;
• and
• a baseband processor,
• wherein the antenna is configured to:
• transmit a received radio signal to the radio frequency processor;
• or
• convert a transmit signal of the radio frequency processor into an electromagnetic wave, and transmit the electromagnetic wave,
• wherein the radio frequency processor is configured to:
• perform frequency selection, amplification, and down-conversion processing on the received radio signal, convert the received radio signal into an intermediate frequency signal or a baseband signal, and transmit the intermediate frequency signal or the baseband signal to the baseband processor;
• or
• transmit, using the antenna, the baseband signal or the intermediate frequency signal that is sent by the baseband processor and that is obtained by means of up-conversion and amplification, and
• wherein the baseband processor is configured to perform processing on the intermediate frequency signal or the baseband signal.

A mobile terminal comprising:

• an antenna comprising:
• a first radiation part configured to generate a first frequency, the first radiation part comprising:
• a capacitor structure configured as a series-distributed capacitor structure in a composite right/left-handed transmission line configuration;
• a first radiator comprising:
• a first end;
• and
• a second end;
• and
• a second radiator configured as a parallel distributed inductor in the composite right/left-handed transmission line configuration, the second radiator comprising:
• a first end connected to the second end of the first radiator using the capacitor structure;
• and
• a second end connected to a grounding part;
• a matching circuit;
• and
• a feed source connected to the first end of the first radiator using the matching circuit, the feed source further connected to the grounding part.