| 摘要 |
<p>1503565 Microwave couplers POST OFFICE 24 Feb 1975 [27 Feb 1974] 7622/75 Heading H1W [Also in Division H4] Cross-coupling between strip lines, Figs. 10A, at locations 48-51, ensure that, having regard to the phase shifts occurring along the lines, signals Ex, Ey corresponding to non-orthogonal linearly polarized signals, are transformed into isolated signals Ea, Eb at ports 34, 35. The strip lines are on both sides of dielectric board 41, itself sandwiched by boards 42, 43 each supporting a ground plane 44, 45. The arrangement is used to control cross-coupling between signals as received in a frequency re-use communication system, see Division H4.</p> |
