| 摘要 |
<p>A phase shifter is implemented using varicap diodes (30) arranged in the form of a lumped element transmission line. A control unit (24) controls the reverse bias voltage of the diodes (30) to provide a delay which can be varied continuously over a given range. The arrangement can be used in conjunction with a digital phase shifter (10) which provides a delay which can be adjusted in predefined steps. The analog shifter (11) provides continuous variation over the step size of the digital shifter. <IMAGE></p> |
