Tilt-dependent beam-shape system

A system for changing the radiation pattern shape of an antenna array in up-link during electrical tilting, said antenna array comprising multiple antenna elements, said system comprising:

• a phase-shifting device provided with multiple of secondary ports configured to receive phase shifted input signals from each antenna element,
• a primary port configured to combine the input signals to a receive signal,
• a phase-taper device configured to change phase taper over the secondary ports, and thus the beam shape, with tilt angle (θtilt).

A method for changing the radiation pattern shape of an antenna array in down-link during electrical tilting, said antenna array having multiple antenna elements, said method comprising:

• providing phase shifted output signals to each antenna element from multiple secondary ports of a phase shifting device, said phase-shifting device is provided with a primary port configured to receive a transmit signal,
• providing changed phase taper over the antenna elements with tilt angle (θtilt) using a phase-taper device.

A method for changing the radiation pattern shape of an antenna array in up-link during electrical tilting, said antenna array having multiple antenna elements, said method comprising:

• providing phase shifted input signals from each antenna element to multiple secondary ports of a phase shifting device, said phase-shifting device is provided with a primary port configured to combine the input signals to a receive signal,
• providing changed phase taper over the secondary ports with tilt angle (θtilt) using a phase-taper device.