| 摘要 |
A tunable amplitude unbalance stripline combiner for RF signals in which the amplitude unbalance can be adjusted in order to minimize the amplitude unbalance. The combiner has an upper printed circuit board mounted over a lower printed circuit board. The lower printed circuit board has a pair of printed circuit lines that are connected between an output port and a pair of input ports. The upper printed circuit board has a metallized area covering the top surface. Several non-metallized cavities are located in the metallized area above the circuit lines. The number of cavities can be adjusted to change the amplitude unbalance.
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