Advanced Timing Circuit for Magnetization of AMR Magnetometer

David Vala


This contribution describes the invention of Magnetometer with protection against detection by electronic countermeasure (ECM) registered by Czech patent office as patent no. 305322.[1] Magnetic sensors are often part of dual use or security instruments and equipment. For this purpose, it is very interesting to build a sensor, which is hidden against electronic countermeasure. In this case, the level and behavior of electromagnetic noise produced by a sensor has become very important. Further, there has been a significant growth of the electromagnetic compatibility of electronic devices. As the consequence of this growth, there is a continuous process of making strict standards focused on the electromagnetic radiation of electronic devices. Sensors technology begins to be a part of these issues due to the increasing usage of sensors bandwidth and the approach to frequency of radio communication band. Nowadays, microcontrollers and similar digital circuits are integrated into sensors devices and it brings new sources of electromagnetic radiation in modern smart sensors.


Anisotropic Magnetoresistors; AMR; Magnetic Sensor; EMC, Weak Magnetic Field; Electronic Countermeasure; ECM;

Full Text:



Vala, D., “Magnetometer with protection against detection by radioelectronic means.” CZ Patent 305322.

Ripka, P., [Magnetic sensors and magnetometers], Artech House, Boston (c2001).

Pant, B., “Magnetoresistive magnetic sensor,” (July 11 1989). US Patent 4,847,584.

Pant, B., Krahn, D., and Fryer, R., “Magnetic field sensing device,” (Sept. 21 1993). US Patent 5,247,278.

Dettmann, F. and Loreit, U., “Magnetic field sensor constructed from a remagnetization line and one magnetoresistive resistor or a plurality of magnetoresistive resistors,” (May 28 1996). US Patent 5,521,501.

Wan, H., “Magnetic field sensing device having integral coils for producing magnetic fields,” (Sept. 14 1999).US Patent 5,952,825.

He, D. F. and Shiwa, M., “An anisotropic magneto resistive sensor with set/reset field,” REVIEW OF SCIENTIFIC INSTRUMENTS 82 (SEP 2011).

Honeywell, Set/Reset Pulse Circuits for Magnetic Sensor, 900298 08-02 rev ed.

[International electronic countermeasures handbook], Horizon House Publications, Norwood, MA, 2001 ed. ed. (2001).

[Surveillance countermeasures], Paladin Press, Boulder, Colo. (c1994).

Boyd, J. A., [Electronic countermeasures], Peninsula Pub., Los Altos, Calif. ([1978]).

Abdalla, A., Yuan, Z., Longdon, S., Bore, J., and Bin, T., “A study of eccm techniques and their performance,” 2015 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015 (2015).

Liu, C.-T., Wu, R.-J., He, Z.-X., Zhao, X.-F., Li, H.-C., and Wang, P.-Z., “Modeling and analyzing interference signal in a complex electromagnetic environment,” Eurasip Journal on Wireless Communications and Networking 2016(1), 1–9 (2016)..

Lu, G., Tang, B., and Gui, G., “Deception ecm signals cancellation processor with joint time-frequency pulse diversity,” IEICE Electronics express 8(19), 1608–1613 (2011).

Boashash, B., [Time frequency signal analysis and processing ], Elsevier, Boston (2003).

Neviva, P., [Analza signl a soustav], BEN - technick literatura, Praha (2000).

Walendziuk, W. and Sawicki, A., “Telemetric measurement system of beehive environment conditions,” Proceedings of SPIE - The International society for Optical Engineering 9290 (2014).

Idzkowski, A., Leoniuk, K., Walendziuk, W., and Budzynski, L., “Monitoring and control system of charging batteries connected to a photovoltaic panel,” Proceedings of SPIE - The International Society for Optical Engineering 9662 (2015).

Krejcar, O., Janckulik, D., and Slanina, Z., “The real code migration on portable devices for personal biotelemetric systems,” PORTABLE-POLYTRONIC 2008 - 2nd IEEE International Interdisciplinary Conference on Portable Information Devices and the 2008 7th IEEE Conference on Polymers and Adhesives in Microelectronics and Photon (2008).

Krejcar, O., Slanina, Z., Stambachr, J., Silber, P., and Frischer, R., “Noninvasive continuous blood pressure measurement and gps position monitoring of patients,” IEEE Vehicular Technology Conference (2009).

Slanina, Z. and Krejcar, O., “Managing of large data artifacts on mobile devices with an ultra sensitive gps devices,” Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering 32 LNICST, 143–154 (2010).

Slanina, Z., Kasik, V., and Musil, K., “Gps synchronisation for fpga devices,” IFAC Proceedings Volumes (IFAC-PapersOnline) 11(PART 1), 337–340 (2012).


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

ISSN: 2180-1843

eISSN: 2289-8131