Bandwidth Enhancement of Comparator Applied in W-Band Circularly Polarized Monopulse Antenna

Chen, Yang; Cao, Zhixiang; Zhang, Lianwei; Guo, Huan; Meng, Hongfu

doi:10.1109/lawp.2023.3280480

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…Here, to feed the feeding network into one layer, a compact hybrid feeding network is used, which is a combination of ridge waveguides and E‐plane hollow waveguides. Again, a wideband comparator for a W‐band circularly polarized (CP) monopulse antenna is proposed 27 . The comparator consists of four 3‐dB waveguide couplers and a novel wideband phase shifter.…”

Section: Introductionmentioning

confidence: 99%

High‐gain W‐band‐printed antenna on flexible substrate

Biswas,

Karmakar,

Adhikar

et al. 2024

Int J Communication

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SummaryThis article demonstrates a novel type of series‐fed planar antenna array for a W‐band (70 GHz) application. The proposed architecture is a 5‐element antenna array with 10 numbers of gap‐coupled parasitic patches in microstrip configuration over a thin, flexible and bio‐compatible substrate named LCP (liquid crystal polymer). A detailed design methodology with all fabrication constraints has been elaborated on here. Full wave analysis of the whole structure has been carried out in the FEM‐based 3D electromagnetic (EM) solver ANSYS HFSS Suite V.19.2. Parametric simulations were studied to achieve the optimized values of all design parameters. Further, an empirical electrical equivalent circuit model is proposed for the antenna array, and it was validated with the simulation results obtained from the FEM solver. Two prototypes have been fabricated, and measurements were carried out to fetch all the designed antenna parameters. The proto version of the antenna offers peak directive gain of about 19 dBi with better than 22 dB of return loss and 80% radiation efficiency for the frequency range of 67–85 GHz. Experimental and simulated results closely match each other. Small deviations are attributed to practical imperfections incurred by fabrication tolerances, measurement inaccuracies, testing, assembly‐related issues and so forth. Finally, the current research work is compared with the recently reported literature.

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Section: Introductionmentioning

confidence: 99%

High‐gain W‐band‐printed antenna on flexible substrate

Biswas,

Karmakar,

Adhikar

et al. 2024

Int J Communication

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A miniaturized dual wide‐band polarization reconfigurable antenna integrated with artificial magnetic conductor for next‐generation wireless applications

Rajavel,

Ghoshal

2024

Int J Communication

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SummaryIn today's intricate wireless communication environment, ensuring system quality demands the use of a reliable and versatile antenna system. This research article introduces a polarization reconfigurable antenna integrated with a 4 × 4 Artificial Magnetic Conductor (AMC) surface. The AMC unit cell exhibits a triple‐band reflection phase response at 1.8GHz, 4.5GHz, and 5.5GHz, demonstrating double negative metamaterial behavior. The antenna features two distinct C‐shaped metal strips connected to two PIN diodes, enabling dynamic current distribution adjustment. Consequently, the proposed antenna offers three reconfigurable states, facilitating seamless switching between dual circular polarization (left and right‐hand circular polarization) and linear polarization. With a frequency coverage ranging from 1.29 to 2.52GHz and 3.59 to 6.15GHz, the antenna boasts a maximum axial ratio (AR) bandwidth of 31.96%. Additionally, it achieves a maximum peak gain of 5.5 dB and maintains front‐to‐back ratio (FBR) values exceeding 25 dB, while recording a minimum specific absorption rate (SAR) value of 0.1059 W/kg. The integration of the AMC surface ensures enhanced performance of the antenna. Experimental results from constructed prototypes closely align with simulation outcomes, validating the effectiveness of the proposed antenna. Consequently, this antenna holds significant promise for next‐generation wireless applications.

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A Compact Monopulse Feed Antenna Based on Gap Waveguide at W-Band

Wang,

et al. 2024

2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI)

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Bandwidth Enhancement of Comparator Applied in W-Band Circularly Polarized Monopulse Antenna

Cited by 6 publications

References 21 publications

High‐gain W‐band‐printed antenna on flexible substrate

High‐gain W‐band‐printed antenna on flexible substrate

A miniaturized dual wide‐band polarization reconfigurable antenna integrated with artificial magnetic conductor for next‐generation wireless applications

A Compact Monopulse Feed Antenna Based on Gap Waveguide at W-Band

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