发明名称 |
Microwave circular polarizer |
摘要 |
This specification discloses a microwave circular polarizer for converting a linearly polarized microwave signal to a circularly polarized microwave signal and vice versa. A transducer, such as an Orthomode junction is used to obtain a power split or a power recombination of two orthogonal linear polarizations. To obtain the phase delay required to generate a circularly polarized signal from two linearly polarized signals, the polarizer includes a phase compensator with a pair of waveguides which have appropriate width and length so that signals passing therethrough develop a phase difference therebetween and a composite circularly polarized signal results. The amount of phase shift occurring in each of the waveguides varies with the frequency of the signal in such a way as to produce a high purity circular polarization over a broad frequency band. A phase shift of 90 DEG can be obtained at two frequencies and these frequencies can be selected so that they are within a frequency band having a desirably low axial ratio.
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申请公布号 |
US4228410(A) |
申请公布日期 |
1980.10.14 |
申请号 |
US19790004628 |
申请日期 |
1979.01.19 |
申请人 |
FORD AEROSPACE & COMMUNICATIONS CORP. |
发明人 |
GOUDEY, KENNETH R.;SCIAMBI, JR., ATTILIO F. |
分类号 |
H01P1/161;H01P1/165;H01P1/17;H01Q13/02;(IPC1-7):H01P1/16;H01P5/16 |
主分类号 |
H01P1/161 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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