| 摘要 |
A multi-polarized phased array antenna includes an element, a first feed line, a second feed line, a first phase shifter, and a second phase shifter. The element is fed with a first polarization signal at first and third angles, and a second polarization signal at second and fourth angles. One of the first polarization signal and second polarization signal is cancelled at a feed point in at least one of a first feed line and second feed line by operation of the first phase shifter, second phase shifter, first angle, second angle, third angle, and fourth angle. The first phase shifter provides a first 180° phase shift between the first and third angles, and the second phase shifter provides a second 180° phase shift between the second and fourth angles. A corresponding method of increasing isolation between polarizations in the multi-polarized phased array antenna is also provided. |
| 主权项 |
1. A multi-polarized phased array antenna, which comprises:
an element, the element being fed with a first polarization signal at a first angle, a second polarization signal at a second angle, the first polarization signal at a third angle, and the second polarization signal at a fourth angle, the first polarization signal comprising a first polarization, the second polarization signal comprising a second polarization, the first polarization being different from the second polarization; a first feed line operatively coupling the first polarization signal to the element, the first feed line being associated with the first polarization; a second feed line operatively coupling the second polarization signal to the element, the second feed line being associated with the second polarization; a first phase shifter operatively coupled in the first feed line; and a second phase shifter operatively coupled in the second feed line, one of the first polarization signal and the second polarization signal being cancelled at a feed point in at least one of the first feed line and the second feed line by operation of the first phase shifter, second phase shifter, first angle, second angle, third angle, and fourth angle, at least one of the first phase shifter and the second phase shifter comprising at least one of a digital phase shifter and analog phase shifter, the analog phase shifter comprising at least one length of conductor in addition to that required to couple at least one of (1) the first feed line across the first phase shifter and (2) the second feed line across the second phase shifter using a straight conductor, the at least one length of conductor providing a phase shift, the first phase shifter providing a first 180° phase shift between the first and third angles, the second phase shifter providing a second 180° phase shift between the second and fourth angles. |
