Harmonic Transponders: Performance and Challenges

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.

[1]  R. Jakoby,et al.  Quasi-chipless wireless temperature sensor based on harmonic radar , 2014 .

[2]  J. R. Riley,et al.  Design considerations for an harmonic radar to investigate the flight of insects at low altitude , 2002 .

[3]  Janne Ilvonen,et al.  On Design and Evaluation of Harmonic Transponders , 2015, IEEE Transactions on Antennas and Propagation.

[4]  Risto Valkonen,et al.  Dual‐band matching of arbitrary loads , 2014 .

[5]  Nai-Chung Kuo,et al.  A High-Range-Accuracy and High-Sensitivity Harmonic Radar Using Pulse Pseudorandom Code for Bee Searching , 2013, IEEE Transactions on Microwave Theory and Techniques.

[6]  Luca Roselli,et al.  THEORY OF ZERO-POWER RFID SENSORS BASED ON HARMONIC GENERATION AND ORTHOGONALLY POLARIZED ANTENNAS , 2013 .

[7]  Ke Wu,et al.  Noise and Sensitivity of Harmonic Radar Architecture for Remote Sensing and Detection of Vital Signs , 2014, IEEE Transactions on Microwave Theory and Techniques.

[8]  A. Singh,et al.  Respiratory Monitoring and Clutter Rejection Using a CW Doppler Radar With Passive RF Tags , 2012, IEEE Sensors Journal.

[9]  A D Smith,et al.  Tracking butterfly flight paths across the landscape with harmonic radar , 2005, Proceedings of the Royal Society B: Biological Sciences.

[10]  Mohammad Tariqul Islam,et al.  CIRCULAR MICROSTRIP SLOT ANTENNA FOR DUAL- FREQUENCY RFID APPLICATION , 2011 .

[11]  Janne Ilvonen,et al.  Antenna Matching at Harmonic Frequencies to Complex Load Impedance , 2015, IEEE Antennas and Wireless Propagation Letters.

[12]  Anthony F. Martone,et al.  Detection of RF Electronics by Multitone Harmonic Radar , 2014, IEEE Transactions on Aerospace and Electronic Systems.

[13]  Hai Deng,et al.  Design of a Reconfigurable RFID Sensing Tag as a Generic Sensing Platform Toward the Future Internet of Things , 2014, IEEE Internet of Things Journal.

[14]  Gaetano Marrocco,et al.  Pervasive electromagnetics: sensing paradigms by passive RFID technology , 2010, IEEE Wireless Communications.

[15]  B. Colpitts,et al.  Harmonic radar transceiver design: miniature tags for insect tracking , 2004, IEEE Transactions on Antennas and Propagation.

[16]  Chi-Chih Chen,et al.  A Portable Low-Power Harmonic Radar System and Conformal Tag for Insect Tracking , 2008, IEEE Antennas and Wireless Propagation Letters.

[17]  Nuri W. Emanetoglu,et al.  A low-cost harmonic radar for tracking very small tagged amphibians , 2013, 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC).