发明名称 |
Feed Network |
摘要 |
A feed network includes three radio frequency (RF) devices constructed in a suspended-substrate stripline configuration that provides a five-port microwave device having a sum port and four feed ports. The three RF devices include at least one coupled-line quadrature hybrid and at least one Marchand balun. Each of the at least one coupled-line quadrature hybrid has only a single transmission line section providing two outputs with approximately equal amplitude power and a phase difference of 90°. Each of the at least one Marchand balun includes two offset-coupled transmission line sections separated by a gap and two outputs on opposite sides of the gap. The two outputs have approximately equal amplitude power and a phase difference of 180°. The three RF devices are electrically arranged relative to the sum port and the four feed ports such that the feed ports have equal amplitude power and a progressive 90° phase shift. |
申请公布号 |
US2014197901(A1) |
申请公布日期 |
2014.07.17 |
申请号 |
US201313840355 |
申请日期 |
2013.03.15 |
申请人 |
Bishop Bruce Foster;Fasenfest Kathleen |
发明人 |
Bishop Bruce Foster;Fasenfest Kathleen |
分类号 |
H01P5/22 |
主分类号 |
H01P5/22 |
代理机构 |
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代理人 |
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主权项 |
1. A feed network comprising:
three radio frequency (RF) devices constructed in a suspended-substrate stripline configuration that provides a five-port microwave device having a sum port and four feed ports, the three RF devices including at least one coupled-line quadrature hybrid and at least one Marchand balun; wherein each of the at least one coupled-line quadrature hybrid has only a single transmission line section providing two outputs with approximately equal amplitude power and a phase difference of 90°; wherein each of the at least one Marchand balun includes two offset-coupled transmission line sections separated by a gap and two outputs on opposite sides of the gap, the two outputs having approximately equal amplitude power and a phase difference of 180′; and wherein the three RF devices are electrically arranged relative to the sum port and the four feed ports such that the feed ports have equal amplitude power and a progressive 90° phase shift. |
地址 |
Aptos CA US |