Harmonic response vs. target orientation: a preliminary study of the effect of polarization on nonlinear junction detection

Mazzaro, Gregory J.; Gallagher, Kyle A.; Sherbondy, Kelly D.; Bouvy, Alex; Perez, Beatrice; Pierson, Timothy J.; Kotz, David

doi:10.1117/12.2617881

Cited by 3 publications

(3 citation statements)

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“…From this, we can analyze that since the transmitted and received waves are circularly polarized in nature facing the snowflake tag, if either of the Tx antenna, Rx antenna and the snowflake tag are rotated without changing it position orientation, The received signal power will be relative to each other with minimal signal degradation mentioned in [25]. Future work will include investigating the behavior characteristics of the snowflake tag with the complete demonstration of the portable harmonic radar system including the designed CP harmonic radar antenna arrays.…”

Section: Discussionmentioning

confidence: 99%

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Circular Polarized Antennas With Harmonic Radar: Passive Nonlinear Tag Localization

Yadav,

Zeng,

2024

IEEE J. Sel. Areas Sensors

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This research proposes a high performance, low-profile planar design, and demonstration of circularly polarized harmonic antenna arrays for 4 and 8 GHz harmonic radar system which is equipped, and the antenna's circular polarization performance is tested using a passive non-linear harmonic tag (snowflake) in a noisy environment. This work mainly concentrates on investigation of the wave polarization (Circular), gain estimation and impedance matching of the antenna arrays that will be potentially assembled to the 2 nd order harmonic radar system operating at 4 and 8 GHz, which plays a critical role in 2-D tag localization and post processing methods. The passive snowflake tag design is implemented in the simulation to determine the current distribution and gain plot patterns in comparison to a classic dipole antenna tag structure. In experiments: a combination of fundamental circular polarized (Left-hand) antennas were demonstrated to find Axial Ratio (A.R.) ≤ 3 dB band. A novel tag 2-D localization measurement, combination of CP harmonic antenna arrays is utilized to perform and obtain the circular polarized received signal power in dBm v/s angle rotation by every 10° on a rotating platform setup. Finally, the wireless tag tracking result is achieved by using the designed circularly polarized antennas and the passive non-linear tag orientation setup.

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Section: Discussionmentioning

confidence: 99%

“…Several studies on the dipole antenna tag design were conducted based on arm shape, dielectric substrate material, dipole length to match the impedance, lesser tag weight to increase the efficiency of the tag performance and peakamplitude v/s angle as discussed in [11], [12], [25].…”

Section: A Dipole Tag Simulationmentioning

confidence: 99%

Circular Polarized Antennas With Harmonic Radar: Passive Nonlinear Tag Localization

Yadav,

Zeng,

2024

IEEE J. Sel. Areas Sensors

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“…Second-order harmonic radars [36][37][38][39] are rather prevalent; however, it is unusual to find third-order harmonic radars 24,40 in contactless technology. Possible benefits of using a higher-order harmonic radar include reducing the complexity in their designs by using less filtering stages.…”

Section: Introductionmentioning

confidence: 99%

A quantitative study of the benefits of the third-order over the second-order harmonic radar

Abad Lima,

2024

Radar Sensor Technology XXVIII

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Nonlinear radar technology has been employed in various applications for a few decades, primarily focusing on second-order harmonic radar systems. This study delves into the potential benefits and drawbacks of utilizing higher-order harmonic radar systems. We present a comparative analysis between second-and third-order harmonic systems using Cadence AWR Visual System Simulator (VSS) followed by experimental validation. In the experiments, target emulation is achieved through nonlinear tags. In contrast, cluttered environments near the targets are simulated using corner reflectors, with the tag and the corner reflector moving at different frequencies facilitated by Zaber linear actuators. Our findings reveal both the advantages and limitations associated with higher-order systems, offering valuable insights into an underexplored area of research within the domain of harmonic radar technology. This contribution addresses the existing gap in the literature pertaining to higher-order harmonic radars by providing comparative analyses using both measurement and simulation data.

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Evaluating the practical range of harmonic radar to detect smart electronics

Perez,

Arguello,

Pierson

et al. 2023

MILCOM 2023 - 2023 IEEE Military Communications Conference (MILCOM)

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Harmonic response vs. target orientation: a preliminary study of the effect of polarization on nonlinear junction detection

Cited by 3 publications

References 0 publications

Circular Polarized Antennas With Harmonic Radar: Passive Nonlinear Tag Localization

Circular Polarized Antennas With Harmonic Radar: Passive Nonlinear Tag Localization

A quantitative study of the benefits of the third-order over the second-order harmonic radar

Evaluating the practical range of harmonic radar to detect smart electronics

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