| 摘要 |
<p>In a wireless microcell distribution system, low loss saw filters within a cable microcell integrator eliminate wide band thermal and man-made noise introduced by reverse path signaling from the cable microcell integrator, which noise deleteriously affects CATV signals. The utilization of the low loss saw filters within the cable microcell integrator completely eliminates the need for both cascaded amplifiers that increase wide band noise and the fixed frequency external filter which was previously required. Additionally, with the elimination of the fixed frequency external filter at each cable microcell integrator, the system can be tuned to different channels or frequencies by merely tuning the local oscillators in the cable microcell integrator, thereby to facilitate rapid reverse path channel allocation.</p> |
