4results about How to "Improve antenna efficiency" patented technology

This disclosure relates to an antenna assembly and a terminal device. The antenna assembly includes: a first radiating arm to a third radiating arm and a first matching circuit. A first gap is provided between the first radiating arm and the second radiating arm, and a second gap is provided between the second radiating arm and the third radiating arm. A first terminal of the first matching circuit is connected to the end of the second radiating arm near the first gap, and a second terminal of the first matching circuit is grounded. The first matching circuit has a first state and a second state. When the first radiating arm transmits and receives signals in various low-frequency bands, the first matching circuit is in the first state, so that the second radiating arm has the effect of loading the physical length of the low-frequency signal path, thereby improving the performance and efficiency of the low-frequency band antenna. When the third radiating arm transmits and receives signals in various mid-to-high-frequency bands, the first matching circuit is in the second state, so that the second radiating arm excites a parasitic current mode at the high-frequency signal position, thereby widening the bandwidth of the high-frequency signal and improving the efficiency of the mid-to-high-frequency antenna.

The present specification provides a satellite communication antenna and electronic equipment, the antenna comprises a first radiation branch and a parasitic unit, the parasitic unit is a ring branch, and at least part of the branch is close to the first radiation branch and is coupled, and the parasitic unit is connected to the ground through at least one ground point.The satellite communication antenna of the embodiment of the present specification forms circular polarization by using the coupling effect of the parasitic unit, greatly improves the antenna gain compared with linear polarization satellite antenna, and improves the actual experience of satellite communication.And the radiation direction of the satellite communication antenna is mainly towards the zenith region, so that the antenna efficiency is higher, the satellite searching and communication efficiency in the state of user handheld mobile phone is improved, and the user experience is improved.

The embodiment of the application provides a multiplex card holder and a mobile terminal, the multiplex card holder is used for being installed in a card slot of the mobile terminal, and the multiplex card holder comprises a card holder body, an antenna, a feeding point and a feeding point, at least one SIM card insertion cavity is arranged on the card holder body, the antenna is at least formed on one side end surface of the card holder body along a thickness direction, the antenna is arranged along an outer periphery of the SIM card insertion cavity, the feeding point and the feeding point are arranged on an outer side wall of the card holder body, the feeding point is electrically connected with a radiation end of the antenna, and the feeding point is electrically connected with a grounding point of the antenna, wherein the feeding point and the feeding point are configured to be electrically connected with corresponding contact points of the mobile terminal, by arranging the antenna on the card holder body, the antenna setting position limit can be reduced, the antenna performance is improved, and the anti-interference capability is enhanced.

This application discloses an earphone, relating to the technical field of electronic devices. The earphone includes an antenna assembly and a capacitive detection assembly. The capacitive detection assembly is disposed within the radiation range of the antenna assembly and is configured to generate corresponding electrical signals based on whether the user is wearing the earphone or whether the user performs a touch action. The capacitive detection assembly includes an electrode area and a ground wire. The electrode area is used to generate electrical signals, and the ground wire is looped around the electrode area and spaced apart from it. This application improves the capacitive detection assembly, reducing its impact on the antenna assembly and improving antenna efficiency. Specifically, by using a ground wire looped around the electrode area, it suppresses signals coupled from the antenna assembly to the capacitive detection assembly, reducing the transmission of electromagnetic energy between the antenna assembly and the capacitive detection assembly, thereby achieving shielding and isolation effects and improving antenna efficiency.