Electronic device

1. An electronic device, comprising:

a metal frame, wherein:

the metal frame includes a first side;

the first side includes three metal segments separated by two first gaps;

the three metal segments of the first side in the metal frame are used to realize three antennas;

an operating frequency band of at least two antennas of the three antennas of the first side enables the electronic device to support a fifth-generation mobile communication network, the at least two antennas of the three antennas including a first antenna;

the operating frequency band of the first antenna enables the electronic device to support at least two generations of mobile communication networks; and

the first antenna is linked to an antenna feeding network;

wherein the antenna feeding network includes:

a first branch including a first inductor, a second inductor, a variable capacitor, and a third inductor connected in serial, a first end of the third inductor being connected to a radio frequency circuit, and a second end of the third inductor being connected to the variable capacitor;

a second branch connected in parallel with the variable capacitor and including a capacitor and a switch, the switch being connected to the second end of the third inductor; and

a third branch connected to the second end of the third inductor and including a fourth inductor that is grounded.

2. The device according to claim 1 , wherein:

the two first gaps in the first side of the metal frame are configured symmetrically about a middle vertical line of the first side of the metal frame.

3. The device according to claim 2 , wherein:

the first side of the metal frame is located at a top of the electronic device or at a bottom of the electronic device; and/or

the metal frame includes a second side parallel to the first side, the second side of the metal frame includes two second gaps, and the two second gaps in the second side of the metal frame are configured symmetrically about a middle vertical line of the second side of the metal frame.

4. The device according to claim 3 , wherein:

the two first gaps in the first side of the metal frame and the two second gaps in the second side of the metal frame are configured symmetrically.

5. The device according to claim 3 , wherein:

the metal frame is used to realize a plurality of antennas including the three antennas realized by the first metal segment and further including two other antennas in the electronic device supporting the fifth-generation mobile communication network.

6. The device according to claim 5 , wherein:

the plurality of antennas realized through the metal frame include at least five antennas.

7. The device according to claim 1 , wherein:

the at least two antennas include a feeding point;

the feeding point is connected to the antenna feeding network supporting at least two communication networks;

the at least two communication networks supported by the antenna feeding network include the fifth-generation mobile communication network; and

the antenna feeding network is a variable-capacitor-switch-combination circuit.

8. The device according to claim 1 , wherein:

the three metal segments include a first metal segment, a second metal segment, and a third metal segment;

the first metal segment is used to realize the first antenna wherein an operating frequency band of the first antenna is 0.6 GHz-5 GHz, to enable the electronic device to support the fifth-generation mobile communication network;

the second metal segment is used to realize a second antenna wherein an operating frequency band of the second antenna is 1.17 GHz-1.2 GHz and 3.3 GHZ-5 GHz, to support the fifth-generation mobile communication network and L 2 carrier signals and L 5 carrier signals of a global positioning system (GPS) network; and

the third metal segment is used to realize a third antenna wherein an operating frequency band of the third antenna is 1.575 GHz±30 MHz, 2.4 GHz-2.48 GHz, and 5.15 GHz-5.85 GHz, to support L 1 carrier signals of the GPS network and a WiFi network.