Microwave readable dielectric barcode

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C324S642000

Reexamination Certificate

active

11297832

ABSTRACT:
Presented is a system and method for reading a microwave readable barcode formed from a pattern of dielectric material. The dielectric pattern creates a strong microwave contrast with the surrounding media selectively resonating with or scattering an interrogating microwave signal. Dielectric bars can be fabricated by inkjet printing, injection, spraying, drawing or any other technique. Barcode information is encoded using different lengths, angles, or positions of dielectric bars. A microwave readable dielectric barcode system includes a barcode fabricated from a dielectric material, a transmitter with an antenna, and a sensor that senses the effect produced by the dielectric barcode on the microwave signal. The dielectric barcode system can use multiple microwave signals that differ in one or more respects, such as polarization or frequency.

REFERENCES:
patent: 6202929 (2001-03-01), Verschuur et al.
patent: 6330939 (2001-12-01), Pratt
patent: 6427922 (2002-08-01), Marchand
patent: 6526984 (2003-03-01), Nilsson et al.
patent: 6734420 (2004-05-01), Empedocles et al.
patent: 6753830 (2004-06-01), Gelbman
patent: 6819244 (2004-11-01), Dukler et al.
patent: 2002/0014531 (2002-02-01), Murphy et al.
patent: 2004/0026684 (2004-02-01), Empedocles
patent: 2004/0038145 (2004-02-01), Xu et al.
patent: 1 065 623 (2001-01-01), None
Choong-Rae Cho, et al., Thickness dependent performance of Na0.5K0.5NbO3/sapphire thin film varactors;Integrated Ferroelectrics, 2001, vol. 39, pp. 403-410.
Choong-Rae Choa, et al., Ferroelectric Na0.5K0.5NbO3 Thin Films by Pulsed Laser Deposition;Integrated Ferroelectrics, 2000, vol. 31, pp. 35-46; pp. 35[351]-45[361].
M. Ahtee, et al.; Structural Phase Transitions in Sodium-Potassium Niobate Solid Solutions by Neutron Powder Diffraction;Acta Cryst., 1978, A34, 309-317.
Choong-Rae Choa), et al., Na0.5K0.5NbO3thin films for voltage controlled acoustoelectric device applications,Applied Physics Letters, Apr. 29, 2002, vol. 80, No. 17, pp. 3171-1763.
S. Abadeia), et. al., Low-frequency and microwave performances of laser-ablated epitaxial Na0.5K0.5NbO3films on high-resistivity SiO2/Si substrates;Journal of Applied Physics; Feb. 15, 2002, vol. 91, No. 4, pp. 2267-2276.
Choong-Rae Cho, et. al., Na0.5K0.5NbO3/Sio2/Si thin film varactor;Applied Physics Letters, Mar. 27, 2000, vol. 76, No. 13, pp. 1761-1763.
Jang-Yong Kim, et al., Na0.5K0.5NbO3 Film Microwave Varactors;Integrated Ferroelectrics, 2004, vol. 66, pp. 291-300.
Choong-Rae Cho, et al., Background oxygen effects on pulsed laser deposited Na0.5K0.5NbO3films: from superparaelectric state to ferroelectricity,Journal of Applied Physiscs, May 1, 2000, vol. 87, No. 9, pp. 4439-4448.
S. Abadeia), DC field dependent properties of Na0.5K0.5NbO3/SiO2/ Si structures at millimeter-wave frequencies;Applied Physics Letters, Mar. 26, 2001, vol. 78, No. 13, pp. 1900-2276.
Ramos M. Mays; Microwave Readable Ferroelectric Barcode; pp. 1-66.
Alexander M. Grishin, et. al., Processing and On-Wafer Measurements of Ferroelectric Interdigitated Tunable Microwave Capacitors; Mat. Res. Soc. Symp. Proc., 2004, vol. 811, pp. D10.1.1-D10.1.6.
Choong-Rae Cho, et al., Self-assembling ferroelectric Na0.5K0.5NbO3thin films by pulsed-laser deposition,Applied Physics Letters, Jul. 12, 1999, vol. 75, No. 2, pp. 268-270.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Microwave readable dielectric barcode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microwave readable dielectric barcode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave readable dielectric barcode will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3735378

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.