发明名称 |
Distributed MMIC active quadrature hybrid and method for providing in-phase and quadrature-phase signals |
摘要 |
A distributed MMIC active quadrature hybrid (10) provides in-phase (I) and quadrature-phase (Q) outputs (22, 24) over an octave bandwidth. The quadrature hybrid includes in-phase and quadrature-phase amplifying elements (14, 12) arranged in a distributed manner. The in-phase amplifying elements (14) include FETs (42) with series inductive feedback (44) in the source path. The quadrature-phase amplifying elements (12) includes FETs (52) with series capacitive feedback (54) in the source path. The series inductive and capacitive feedback provides the phase difference between the hybrid's outputs. The FETs of the in-phase and quadrature-phase amplifying elements have differing gate peripheries to provide amplitude tracking over the bandwidth.
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申请公布号 |
US5986518(A) |
申请公布日期 |
1999.11.16 |
申请号 |
US19980109282 |
申请日期 |
1998.06.30 |
申请人 |
MOTOROLA, INC. |
发明人 |
DOUGHERTY, RICHARD MATTHEW |
分类号 |
H03F3/60;H03H11/36;(IPC1-7):H01P5/12;H03F3/68 |
主分类号 |
H03F3/60 |
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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