Position: Index > Simple Circuit >

Simple-low-cost-rf-switch

2015-01-09 10:21  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


When the digital logic level at the control input is low, the PIN diode is forward-biased by the CMOS gates. The two 1-KO bias resistors limit this current to the PIN diode`s safe forward current limit. In this state, the switch is on. When the control input is high, the diode is reverse-biased and the switch is ~ott. This switch is well-suited for electronically steered antenna arrays, multiple path switching, and other applications requiring small, low-cost rf switches.
Simple-low-cost-rf-switch

This particular design was used in a four-pole rotary switch for a Doppler-shift radio direction-finder operating at 144 MHz.



Reprinted Url Of This Article:
http://www.next.gr/other-circuits/switch-circuits/simple-low-cost-rf-switch-l13479.html