Millimeter-wave antenna-in-package and terminal device

A terminal device, comprising a printed circuit board and a millimeter-wave antenna-in-package, wherein the millimeter-wave antenna-in-package is connected to the printed circuit board, and wherein the millimeter-wave antenna-in-package comprises a substrate, a radiation structure and a first antenna feeder that are disposed in the substrate, wherein the first antenna feeder comprises an antenna matching stub, a feeder transmission strap, a first harmonic suppression unit, and a second harmonic suppression unit;

• a first end of the antenna matching stub is connected to the radiation structure, the antenna matching stub extends along a side that is away from the radiation structure, and an extension direction of the antenna matching stub is a first reference direction of the first antenna feeder;
• the first harmonic suppression unit comprises a first transmission part and a first bent part, the first transmission part extends along the first reference direction of the first antenna feeder, a first end of the first bent part is connected to a first end of the first transmission part, a second end of the first bent part and a second end of the first transmission part form a first opening;
• a second end of the antenna matching stub is connected to the feeder transmission strap through the first transmission part and a second transmission part, and the feeder transmission strap extends along the first reference direction of the first antenna feeder, wherein the first end of the first transmission part is connected to a second end of the second transmission part;
• and
• the second harmonic suppression unit comprises the second transmission part and a second bent part, wherein the second transmission part extends along the first reference direction of the first antenna feeder, a second end of the second bent part and a second end of the second transmission part form a second opening, the first opening and the second opening are oriented in a same direction, and there are only two openings between the second end of the first transmission part and the first end of the second transmission part along the first reference direction of the first antenna feeder.