Pulsed electronic article surveillance systems

Details Pulsed electronic article surveillance systems Pulsed electronic article surveillance systems

1994-10-06

1996-04-30

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340551, G08B 1314

Patent

active

055128785

ABSTRACT:
An electronic article surveillance (EAS) system includes a transmitting antenna, a driver operable for exciting the transmitting antenna, a receiving antenna and circuitry connected to the receiving antenna for improving the quality of transmissions from the transmitting antenna. The driver excites the transmitting antenna at a preselected system operating frequency and the circuitry connected to the receiving antenna improves the quality of transmissions from the transmitting antenna by lessening harmonics of the operating frequency in the transmissions. The harmonics are attributable to protection diodes connected to the receiving antenna for limiting voltages impressed thereon and otherwise adversely impacting on the receiver tag signal processing circuitry. The harmonic lessening circuitry is connected in parallel with the protection diodes and is operative to lessen protection diode harmonic generation.

REFERENCES:
patent: 5103209 (1992-04-01), Lizzi
patent: 5103222 (1992-04-01), Hogen Esch et al.
patent: 5121103 (1992-06-01), Minasy
patent: 5239696 (1993-08-01), Balch
patent: 5266926 (1993-11-01), Beigel
patent: 5300922 (1994-04-01), Stoffer
patent: 5304983 (1994-04-01), Zhou
patent: 5345222 (1994-09-01), Davies
patent: 5353011 (1994-10-01), Wheeler
patent: 5373301 (1994-12-01), Bowers

Affiliated with

Also associated with

Rating

Pulsed electronic article surveillance systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulsed electronic article surveillance systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsed electronic article surveillance systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-631736