INEXPENSIVE_VHF_UHF_DIODE_PF_SWITCH

Published:2009/7/10 21:06:00 Author:May | From:SeekIC

This circuit uses low-cost IN4148 diodes and exhibits about 1.5 dB insertion loss from 10 to 1000 MHz with a few volts of negative bias. D3 conducts and D1/D2 are cut off, which results in 30 to 50 dB isolation. When a few volts of positive bias are applied, D1 and D2 are biased on and D3 is cut off. This circuit should be useful in applications where a low-cost RF switch is necessary.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/INEXPENSIVE_VHF_UHF_DIODE_PF_SWITCH.html

Print this Page | Comments | Reading(3)