Antenna, terminal middle-frame, and terminal

A terminal middle-frame, wherein the terminal middle-frame is installed with an antenna, wherein the antenna comprises:

• a first antenna portion and a second antenna portion arranged adjacently, wherein the antenna further comprises a third antenna portion, and the first antenna portion is positioned between the third antenna portion and the second antenna portion;
• wherein the first antenna portion comprises a first antenna branch and a first parasitic branch, and the second antenna portion comprises a second antenna branch;
• the first parasitic branch is positioned between the first antenna branch and the second antenna branch;
• the first parasitic branch comprises a first branch segment, a second branch segment, and an additional branch segment;
• and
• a first end of the first branch segment is in contact to a ground region, a second end of the first branch segment is joined to a first end of the second branch segment, and a second end of the second branch segment is joined to a first end of the additional branch segment and points towards the second antenna branch;
• wherein the second antenna portion further comprises a second parasitic branch, and the second parasitic branch is positioned between the first parasitic branch and the second antenna branch;
• the second parasitic branch is L-shaped, and the second parasitic branch comprises a third branch segment and a fourth branch segment;
• and
• a first end of the third branch segment is in contact to the ground region, a second end of the third branch segment is joined to a first end of the fourth branch segment, and a second end of the fourth branch segment points towards the first antenna branch;
• wherein the additional branch segment of the first parasitic branch is parallel to the first branch segment of the first parasitic branch, such that the additional branch segment of the first parasitic branch is perpendicular to the fourth branch segment of the second parasitic branch;
• wherein the third antenna portion comprises a third antenna branch and a third parasitic branch;
• the third parasitic branch is positioned between the third antenna branch and the first antenna branch;
• the third parasitic branch is L-shaped, and the third parasitic branch comprises a fifth branch segment and a sixth branch segment;
• and
• a first end of the fifth branch segment is in contact to the ground region, a second end of the fifth branch segment is joined to a first end of the sixth branch segment, and a second end of the sixth branch segment points towards the first antenna branch;
• and
• wherein the first antenna branch and the second antenna branch run opposite to each other, and the second antenna branch and the third antenna branch run opposite to each other.

A terminal installed with an antenna, wherein the antenna comprises:

• a first antenna portion and a second antenna portion arranged adjacently, wherein the antenna further comprises a third antenna portion, and the first antenna portion is positioned between the third antenna portion and the second antenna portion;
• wherein the first antenna portion comprises a first antenna branch and a first parasitic branch, and the second antenna portion comprises a second antenna branch;
• the first parasitic branch is positioned between the first antenna branch and the second antenna branch;
• the first parasitic branch comprises a first branch segment, a second branch segment, and an additional branch segment;
• and
• a first end of the first branch segment is in contact to a ground region, a second end of the first branch segment is joined to a first end of the second branch segment, and a second end of the second branch segment is joined to a first end of the additional branch segment and points towards the second antenna branch;
• wherein the second antenna portion further comprises a second parasitic branch, and the second parasitic branch is positioned between the first parasitic branch and the second antenna branch;
• the second parasitic branch is L-shaped, and the second parasitic branch comprises a third branch segment and a fourth branch segment;
• and
• a first end of the third branch segment is in contact to the ground region, a second end of the third branch segment is joined to a first end of the fourth branch segment, and a second end of the fourth branch segment points towards the first antenna branch;
• wherein the additional branch segment of the first parasitic branch is parallel to the first branch segment of the first parasitic branch, such that the additional branch segment of the first parasitic branch is perpendicular to the fourth branch segment of the second parasitic branch;
• wherein the third antenna portion comprises a third antenna branch and a third parasitic branch;
• the third parasitic branch is positioned between the third antenna branch and the first antenna branch;
• the third parasitic branch is L-shaped, and the third parasitic branch comprises a fifth branch segment and a sixth branch segment;
• and
• a first end of the fifth branch segment is in contact to the ground region, a second end of the fifth branch segment is joined to a first end of the sixth branch segment, and a second end of the sixth branch segment points towards the first antenna branch;
• and
• wherein the first antenna branch and the second antenna branch run opposite to each other, and the second antenna branch and the third antenna branch run opposite to each other.