What question did this study set out to answer?

To develop a high-efficiency, wideband microstrip-fed angled-dipole antenna suitable for wide-angle scanning in millimeter-wave phased array applications.

September 30, 2008IEEE Transactions on Antennas and Propagation

High-Efficiency Angled-Dipole Antennas for Millimeter-Wave Phased Array Applications

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Authors

RARamadan A. AlhalabiAl-Aqsa University GRGabriel M. RebeizUniversity of California, San Diego

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Implication

Experimental evaluation demonstrates over 93% radiation efficiency in millimeter-wave angled-dipole antennas, indicating high utility for automotive radar arrays.

Key Points

To develop a high-efficiency, wideband microstrip-fed angled-dipole antenna suitable for wide-angle scanning in millimeter-wave phased array applications.
Fabricated endfire angled-dipole antennas on double-sided Teflon substrates (relative permittivity 2.2) to transition single-ended microstrip feed lines into differential dipoles.
Developed an alternative design variant incorporating a magnetic ground plane edge to increase directional antenna gain.
Constructed and tested eight-element linear arrays operating at 22–24 GHz with 6.8 mm center-to-center element spacing.
Both antenna designs yielded a radiation efficiency exceeding 93% referenced to the microstrip feed line, with mutual coupling below -23 dB at 6.8 mm spacing.
The baseline dipole achieved approximately 2.5 dB gain from 20 to 26 GHz with cross-polarization below -15 dB at 24 GHz, whereas the magnetic ground plane variant achieved gain above 6 dB from 23.2 to 24.6 GHz.
Linear eight-element arrays maintained functional beam scanning at angles up to 50 degrees across the 22–24 GHz operating band.

Cite This Study

Alhalabi et al. (2008) studied this question.

synapsesocial.com/papers/6a8349995ecaa9638130e508 https://doi.org/10.1109/tap.2008.929506

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Implication

Experimental evaluation demonstrates over 93% radiation efficiency in millimeter-wave angled-dipole antennas, indicating high utility for automotive radar arrays.

High-Efficiency Angled-Dipole Antennas for Millimeter-Wave Phased Array Applications

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Implication

Key Points

Cite This Study

High-Efficiency Angled-Dipole Antennas for Millimeter-Wave Phased Array Applications

Discussion

Member takes

Implication

Key Points

Cite This Study

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