The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2019
Filed:
May. 23, 2017
Apple Inc., Cupertino, CA (US);
Liang Han, Sunnyvale, CA (US);
Thomas E. Biedka, San Jose, CA (US);
Matthew A. Mow, Los Altos, CA (US);
Iyappan Ramachandran, Santa Clara, CA (US);
Mattia Pascolini, San Francisco, CA (US);
Xu Han, San Jose, CA (US);
Hao Xu, Cupertino, CA (US);
Jennifer M. Edwards, San Francisco, CA (US);
Salih Yarga, Sunnyvale, CA (US);
Yijun Zhou, Sunnyvale, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An electronic device may include an antenna having a resonating element, an antenna ground, and a feed. First and second tunable components may be coupled to the resonating element. Adjustable matching circuitry may be coupled to the feed. Control circuitry may use the first tunable component to tune a midband antenna resonance when sensor circuitry identifies that the device is being held in a right hand and may use the second tunable component to tune the midband resonance when the sensor circuitry identifies that the device is being held in a left hand. For tuning a low band resonance, the control circuitry may place the antenna in different tuning states by sequentially adjusting a selected one of the matching circuitry and the tunable components, potentially reverting to a previous tuning state at each step in the sequence. This may ensure that antenna efficiency is satisfactory regardless of antenna loading conditions.