Patent ID: 11967780
Assignee: VIVO MOBILE COMMUNICATION CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The antenna structure according to claim 1, wherein in order for the antenna impedance of the first terminal of the first capacitor at the target frequencies to be in the first quadrant of a Smith chart,
a value range of the total length of the antenna radiator is set to be 3/16 wavelength to ⅜ wavelength of a center frequency of a first frequency band in the frequency bands covered by the antenna radiator; and
the first length between the second terminal of the antenna radiator and the connection point electrically connected to the first tuning circuit is set to be less than ¼ wavelength of a second frequency band in the frequency bands covered by the antenna radiator, wherein
the center frequency of the first frequency band is less than a center frequency of any frequency band other than the first frequency band in the frequency bands covered by the antenna radiator; and the center frequency of the second frequency band is greater than a center frequency of any frequency band other than the second frequency band in the frequency bands covered by the antenna radiator.