14.低成本宽带射频开关应用采用体效应 (Bulk) 和磊晶式 (Epitaxial) PIN 二极管的比较

Both electromechanical and semiconductor switches are proven technologies used in the control and routing of RF signals. While the use of mechanical switches can be justified in precision test equipment such as vector network analyzers, size- and cost-constrained mass-produced consumer products such as cable or satellite television (CATV/SATV) delivery systems call for electronic switches based on either transistors or PIN diodes. The absence of moving parts also gives semiconductor switches the advantages both of faster response times and longer life spans than their mechanical counterparts.
A comparison of Bulk and Epitaxial PIN diodes
in low cost wideband RF switching

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I. INTRODUCTION II. APPLICATION BACKGROUND
Both electromechanical and semiconductor switches RF switches capable of multi-octave operation without
are proven technologies used in the control and significant signal loss are required in both test
routing of RF signals. While the use of mechanical instruments and CATV/SATV equipment. A multi-carrier
switches can be justified in precision test equipment environment like CATV/SATV imposes a stringent
such as vector network analyzers, size- and cost- linearity demand on the switch: it must not introduce
constrained mass-produced consu