Instrumentation & Measurement Magazine 23-2 - 92

Fig. 7. (a) The size of a dipole antenna [36] is measured with a hundred dinar (100 RSD) banknote. (b) The size of an inverted-F antenna [37] is measured with a
cash card.

While examples of non-coin-objects are mentioned in [1]-[5],
none of these uses is common. This immediately raises the
question why coins are chosen over alternatives. The author's
speculation is that coins are chosen for their monetary value.
The intent of scientists using coins is to display that they have
created something coin-sized with a value much larger than
the coin it is compared to. This rule is strengthened by Rule
4, but it is speculative at this time and must be tested in future work.

References
[1]	 Y. Xiao, Y. Xu, H. Sun, X. Xu and A. Zhou, "A precise real-time
delay calibration method for navigation satellite transceiver,"
IEEE Trans. Instrum. Meas., vol. 65, no. 11, pp. 2578-2586, 2016.
[2]	 A. Putnam et al., "A reconfigurable fabric for accelerating largescale datacenter services," IEEE Micro, vol. 35, no. 3, pp. 10-22, 2015.
[3]	 "Compact power," Electronics Letters, vol. 52, no. 21, p. 1737, 2016.
[4]	 S. Maci, "Per-Simon Kildal: friend, scientist, educator,

Conclusion

entrepreneur," in Proc. European Conf. Antennas and Propagation

Coins are widely used as a measure of size in scientific works.
The habit is customary throughout journals, countries and
fields of research. Coins lack several requirements of modern
unit and measurement systems. Authors use coins from their
own country, as coins are not standardized worldwide. Coins
are not used as lower and upper bounds. Coins are not used
as measurement units. Coins do not form a coherent system.
Systems that fulfill these requirements already exist. One such
example is the Système international d'unités (SI). Devices that
use the SI are inexpensive and available. The author suggests
that their use increase.

(EuCAP), 2017.
[5]	 S. Churkin and L. Anishchenko, "Millimeter-wave radar for
vital signs monitoring," in Proc. IEEE Int. Conf. Microwaves,
Communications, Antennas and Electronic Syst. (COMCAS), 2015.
[6]	 M. Wnuk and L. Nowosielski, "Multisystem antenna for
applications in WiFi networks," in Proc. European Conf. Antennas
and Propagation (EuCAP), 2016.
[7]	 A. Vorobyov, C. Henemann and Ph. Dallemagne, "Liquid metal
based antenna for wearable electronic," in Proc. European Conf.
Antennas and Propagation (EuCAP), 2016.
[8]	 M. Szymkiewicz, Y. Konkel, C. Hartwanger and M. Schneider,
"Ku-band sidearm orthomode transducer manufactured by

Acknowledgments

additive layer manufacturing," in Proc. European Conf. Antennas

The historic coin in Fig. 4 was provided by the Münzkabinett
of Kunsthistorisches Museum Wien, Vienna, Austria, where
it is archived as RÖ 9762. A description is available online at
http://www.ikmk.at/object?id=ID61872. The author thanks
K. Vondrovec of the KHM Münzkabinett for selecting an historic coin.
92	

Currency codes are given according to the ISO 4217 standard.

and Propagation (EuCAP), 2016.
[9]	 P. Choi et al., "An Experimental Coin-Sized Radio for Extremely
Low Power WPAN (IEEE802.15.4) Application at 2.4GHz," in
Proc. IEEE Int. Solid-State Circuits Conf. (ISSCC), 2003.
[10]	G. Artner, "Coins as measure of size," IEEE DataPort, 2019.
[Online]. Available: http://dx.doi.org/10.21227/4rhj-3w36.

IEEE Instrumentation & Measurement Magazine	

April 2020


http://www.ikmk.at/object?id=ID61872 http://dx.doi.org/10.21227/4rhj-3w36

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