Harmonic Radar Transceiver Design: Miniature Tags for Insect Tracking

Colpitts, Bruce G.; Boiteau, Gilles

doi:10.1109/tap.2004.835166

Cited by 202 publications

(126 citation statements)

References 6 publications

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“…The proposed RFID sensor is based on the harmonic radar concept [57,58], i.e., on tag that, being illuminated by a carrier at frequency f 0 , is capable of generating the second harmonic 2f 0 . Such a tag, however, is also responsible for the sensor information encoding, as shown in Fig.…”

Section: Sensor Architecturementioning

confidence: 99%

Theory of Zero-Power Rfid Sensors Based on Harmonic Generation and Orthogonally Polarized Antennas

Alimenti¹,

Roselli²

2013

PIER

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Abstract-In this paper a novel approach is proposed to solve the issue of the absolute accuracy required by the most of the passive chip-less RFID sensors. To this purpose the sensor information is encoded as the phase difference between two signals, one of the two acting as the reference signal for the other one. First the tag receives a carrier at frequency f 0 , then two equal signals at frequency 2f 0 are generated by means of a diode-based frequency doubler and a power divider. At this point one of the two signals is phase-shifted using a passive sensing element. Finally the 2f 0 signals are re-irradiated by exploiting two orthogonally polarized antennas. With this approach the sensor information can be extracted by a suitable reader equipped with two complex (I/Q) receivers. The idea will be first developed from a theoretical basis and then verified with several particular cases. The novel tag concept is compatible with paper substrate and inkjet printing technology since antennas diodes and passive sensing elements, i.e., all the main tag components, are going to be developed on paper materials.

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Section: Sensor Architecturementioning

confidence: 99%

Theory of Zero-Power Rfid Sensors Based on Harmonic Generation and Orthogonally Polarized Antennas

Alimenti¹,

Roselli²

2013

PIER

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“…Harmonic radar and transponders have been applied to, e.g., insect tracking [5,6] and locating avalanche victims [7]. Depending on the application and technology, the used fundamental frequency varies.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Transponders: Performance and Challenges

Rasilainen¹,

Ilvonen²,

Lehtovuori³

et al. 2015

PIER M

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Abstract-Performance of a harmonic transponder strongly depends on the properties of the antenna and diode used, which makes finding a good combination of them very important. For a transponder with a fixed antenna geometry, the effect of different diodes is analyzed through electromagnetic simulations and theoretical calculations. The antenna used in the transponder is directly matched to the impedance properties of a particular diode. Effects of both detector and varactor diodes on the return loss characteristics of the antenna and the obtainable transponder response are observed. Criteria for selecting a suitable diode are given. Benefits and drawbacks of using different antenna matching techniques are discussed, and principal design steps are given both for transponders matched directly to the antenna and for transponders with external matching circuits.

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“…Harmonic tags have been introduced some years ago and have been applied to specific applications such as avalanche rescue systems [12], healthcare [13][14][15], sensing [16][17][18][19], and animal tracking [20][21][22][23][24]. A similar approach has been exploited in harmonic radar systems [25][26][27], in 1-bit frequency doubling tags [1], and for energy harvesting [28].…”

Section: Introductionmentioning

confidence: 99%

“…Localization of harmonic tags can be obtained through RSSI measurements, as investigated in [30,31] or, more frequently, by adopting high-power marine radars using wideband impulsive or FM chirp-based interrogation signals [22]. Unfortunately, to provide a sufficient ranging accuracy, FM chirp-based interrogation signals must be wideband at the expense of a high-noise level that must be counteracted by adopting extremely high transmitter power levels (>1 KW) and mechanical-steered highdirectional antennas.…”

Section: Introductionmentioning

confidence: 99%

“…The electromagnetic characterization of antennas with nonlinear loads was initially carried out in [32]. Most of the studies are application oriented and present experimental results [10,[20][21][22][23][24]33]. Unfortunately, no studies analyzing the fundamental detection capability and achievable localization accuracy using harmonic tags are available, at author's knowledge.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detection and accurate localization of harmonic chipless tags

Dardari

2015

EURASIP J. Adv. Signal Process.

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We investigate the detection and localization properties of harmonic tags working at microwave frequencies. A two-tone interrogation signal and a dedicated signal processing scheme at the receiver are proposed to eliminate phase ambiguities caused by the short signal wavelength and to provide accurate distance/position estimation even in the presence of clutter and multipath. The theoretical limits on tag detection and localization accuracy are investigated starting from a concise characterization of harmonic backscattered signals. Numerical results show that accuracies in the order of centimeters are feasible within an operational range of a few meters in the RFID UHF band.

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Harmonic Radar Transceiver Design: Miniature Tags for Insect Tracking

Cited by 202 publications

References 6 publications

Theory of Zero-Power Rfid Sensors Based on Harmonic Generation and Orthogonally Polarized Antennas

Theory of Zero-Power Rfid Sensors Based on Harmonic Generation and Orthogonally Polarized Antennas

Harmonic Transponders: Performance and Challenges

Detection and accurate localization of harmonic chipless tags

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