发明名称 |
Composite right/left (CRLH) couplers |
摘要 |
High-frequency couplers and coupling techniques are described utilizing artificial composite right/left-handed transmission line (CRLH-TL). Three specific forms of couplers are described; (1) a coupled-line backward coupler is described with arbitrary tight/loose coupling and broad bandwidth; (2) a compact enhanced-bandwidth hybrid ring coupler is described with increased bandwidth and decreased size; and (3) a dual-band branch-line coupler that is not limited to a harmonic relation between the bands. These variations are preferably implemented in a microstrip fabrication process and may use lumped-element components. The couplers and coupling techniques are directed at increasing the utility while decreasing the size of high-frequency couplers, and are suitable for use with separate coupler or couplers integrated within integrated devices. |
申请公布号 |
US8405469(B2) |
申请公布日期 |
2013.03.26 |
申请号 |
US201113312328 |
申请日期 |
2011.12.06 |
申请人 |
ITOH TATSUO;CALOZ CHRISTOPHE;LIN I-HSIANG;OKABE HIROSHI;THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
ITOH TATSUO;CALOZ CHRISTOPHE;LIN I-HSIANG;OKABE HIROSHI |
分类号 |
H01P5/12;H01P5/18;H01P5/22 |
主分类号 |
H01P5/12 |
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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