Antenna diversity arrangement
AssigneeKoninklijke Philips Electronics N.V.
InventorKevin R. Boyle
Life of this patent
Estimating the term…
Abstract
An antenna diversity arrangement (200) comprises a plurality of antennas (204a, 204b) capable of forming a plurality of antenna beams. The amplitude and phase relationships between the signals driving each of the antennas (204a, 204b) are first determined for an arrangement where each antenna is replaced by a point source. The results of this analysis are then transformed by reference to the characteristics of the real antenna arrangement (200) to determine appropriate driving signals. The resultant antenna diversity arrangements (200) can have antennas (204a, 204b) located arbitrarily close to one another with near-zero correlation between any pair of the antenna beams, thereby providing a compact and effective arrangement.
Claims20
An antenna diversity arrangement comprising a plurality of antennas and means for feeding each of the plurality of antennas with a signal of suitable amplitude and phase to enable the generation of a plurality of antenna beams having a correlation coefficient determined by a differential phase shift in the signal for each of the antennas and an electrical spacing between the antennas, wherein the correlation coefficient between any pair of beams is substantially zero.
A method of operating an antenna diversity arrangement comprising a plurality of antennas, the method comprising feeding each of the plurality of antennas with a signal of suitable amplitude and phase to enable the generation of a plurality of antenna beams, having a correlation coefficient determined by a differential phase shift in the signal for each of the antennas and an electrical spacing between the antennas, wherein the correlation coefficient between any pair of beams is substantially zero.
An antenna diversity arrangement comprising:
- a plurality of antennas;
- and
- a mechanism for providing each of the plurality of antennas with a signal having a correlation coefficient determined by a differential phase shift in the signal for each of the antennas and an electrical spacing between the antennas, wherein the correlation coefficient between any pair of beams is substantially zero.
Dependencies are inferred from the claim text.