Method of obtaining an antenna gain
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorNicolas Voyer
Life of this patent
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Abstract
A method for obtaining a gain function by using an array of antennae and a weighting of the signals received or to be transmitted by vectors of complex coefficients. The complex coefficients are referred to as weighing vectors, according to which, a reference gain function being given, the reference gain function is projected orthogonally onto the sub-space of a gain function. The sub-space of the gain function is generated by the weighting vectors of the space of the gain functions. The weighting vectors of the space of the gain functions are provided in advance with a norm, and a weighing vector generating the reference gain function thus projected is chosen as the optimum weighting vector.
Claims14
A method of obtaining a gain function from an array of antennae and a weighting of signals received or to be transmitted by vectors ({overscore (b)}) of N complex coefficients, referred to as weighting vectors, N being the number of antennae in the array, comprising the steps of:
- generating a sub-space which is normed and orthogonal with respect to a space of gain functions, the gain functions being generated by the weighting vectors;
- projecting a desired reference function onto the sub-space;
- and
- choosing a weighting vector which generates a gain function approximate to the projection of the desired reference gain function in the sub-space, as an optimum weighting vector.
Dependencies are inferred from the claim text.