RF signal transmission device for base station antenna, phase shifter and base station antenna

An RF signal transmission device for a base station antenna, comprising:

• a printed circuit board comprising a dielectric layer, a metal pattern layer on a first main surface of the dielectric layer, and a ground layer on a second main surface of the dielectric layer, wherein the metal pattern layer comprises a transmission line deformation section configured to enhance an ability to withstand surge current, and wherein the ground layer comprises a groove that is configured to at least partially compensate for a change in a characteristic impedance due to the transmission line deformation section,
• wherein the metal pattern layer comprises a power divider that includes a first input section, a first output section and a second output section, wherein the first input section, the first output section, and the second output section of the power divider are configured as respective transmission line deformation sections.

A phase shifter for a base station antenna, wherein the phase shifter comprises a first printed circuit board and a movable member, wherein the first printed circuit board comprises a dielectric layer, a metal pattern layer on a first main surface of the dielectric layer and a ground layer on a second main surface of the dielectric layer, wherein the metal pattern layer comprises an input section that is connected to an RF input port and at least one output section that is connected to at least one respective RF output port, wherein the movable member is configured to adjust phases of at least one RF sub-component of an RF signal that is input at the RF input port, wherein the input section is configured as a transmission line deformation section for enhancing the ability to withstand surge current, and the ground layer includes a groove that is associated with the transmission line deformation section, and wherein the groove is configured to at least partially compensate for a change in characteristic impedance due to the transmission line deformation section,

• wherein the first output section in the metal pattern layer is configured as a second transmission line deformation section, wherein the first output section transmits a sub-component of the RF signal to an output port without an adjustable phase shift.

An RF signal transmission device for a base station antenna, comprising:

• a printed circuit board that includes a dielectric layer, a metal pattern layer on a first main surface of the dielectric layer, and a ground layer on a second main surface of the dielectric layer, wherein the metal pattern layer includes a widened transmission line section that is wider than at least one other transmission line section on the printed circuit board, and the ground layer includes a groove in which metallization is removed underneath the widened transmission line section,
• wherein the RF signal transmission device is a power divider, and the widened transmission line section is along an input section of the power divider.