| 摘要 |
<p>A method of tuning a multiport amplifier and a multiport amplifier are pr ovided. The multiport amplifier comprises an even number of microwave power amplifiers (A1-A8) arranged in parallel, a series of input ports (p1-p8) and a series of output ports (q1-q8), the input ports being connected to the am plifiers by a series of input hybrids (A-M) and the output ports being conne cted to the amplifiers by a series of output hybrids (A-M), whereby an input signal at any given input port is amplified by all amplifiers, and then rec ombined into an output signal at a given output port. The method includes th e steps of matching each amplifier in a pair of adjacent amplifiers to the o ther to an extent which is greater than matching between non paired amplifie rs while still being able to ensure acceptable signal isolation between all output ports. This method of tuning results in an MPA well suited to the req uirements of certain frequency re-use schemes and which has a significantly reduced set-up and test time.</p> |
