Signal distribution network

A method for processing signals in a signal distribution network for an antenna arrangement with fewer input ports than antenna elements, the signal distribution network comprising at least two signal splitters, at least one signal adder and at least two signal combiner, the method comprising:

• receiving, by each signal splitter, one input baseband signal from a unique input port;
• providing, by each signal splitter, one direct feed signal as input to a unique antenna element, and providing one intermediate signal as input to at least one of said at least one signal combiner;
• receiving, by each signal combiner, two intermediate signals, each intermediate signal being received from a respective signal splitter of said at least two signal splitters;
• providing, by each signal combiner, one combined signal as input to a unique antenna element, wherein said one combined signal is formed by combining the received two intermediate signals;
• providing, by one of said at least two signal combiners, a first input to said signal adder;
• and
• providing, by one of said at least one signal combiner, a second input to said signal adder.

A non-transitory computer-readable medium comprising, stored thereupon, a computer program product for processing signals in a signal distribution network for an antenna arrangement with fewer input ports than antenna elements, the signal distribution network comprising at least two signal splitters, at least one signal adder and at least two signal combiner, the computer program product comprising a computer program that, when executed by the signal distribution network, causes the signal distribution network to:

• receive, by each signal splitter, one input baseband signal from a unique input port;
• provide, by each signal splitter, one direct feed signal as input to a unique antenna element, and provide one intermediate signal as input to at least one of said at least one signal combiner;
• receive, by each signal combiner, two intermediate signals, each intermediate signal being received from a respective signal splitter of said at least two signal splitters;
• provide, by each signal combiner, one combined signal as input to a unique antenna element, wherein said one combined signal is formed by combining the received two intermediate signals;
• provide, by one of said at least two signal combiners, a first input to said signal adder;
• and
• provide, by one of said at least one signal combiner, a second input to said signal adder.