METHOD FOR AUTOMATICALLY SETTING THE GAIN OF AN INTERROGATOR RECEIVER WITHIN A NON-CONTACTING IDENTIFICATION SYSTEM

摘要

Attack amplified input signal threshold voltage (Uatt) receives a pointer to the Gators every time you exceed the attack is activated in the amplifier, the length of the reception amplifier during the delay period is preferably after the attack that does not respond to the gain setting is equal to twice the length of the longest time interval between adjacent pulses in the transponder data wave packet . However, the transponder after lapse of the waiting period which started when the instantaneous value of the amplified input signal after the end of the last or after the lapse of a waiting period following the attack state the attack exceeded a waiting threshold voltage level ends (Uw) activated which responds to the decay. Attenuation rate has a size of the same degree as the attack rate. Improved automatic gain setting method enables a pointer to a receiver within a non-contact identification system gaiter not change the essential characteristics of the input signal substantially.