Design of a cavity-based filtering antenna with dual-polarization operating at Ka -band

2017 ◽  
Vol 27 (9) ◽  
pp. e21138 ◽  
Author(s):  
Hui Chu ◽  
Lei Bian ◽  
Peng Li
Keyword(s):  
Dual Polarization ◽  
Ka Band

Design and fabrication of a novel single-layer Ka-band reflectarray antenna

2019 ◽  
Vol 12 (5) ◽  
pp. 409-418
Author(s):  
M. Abdollahvand ◽  
K. Forooraghi ◽  
Jose A. Encinar ◽  
Z. Atlasbaf ◽  
E. Martinez-de-Rioja
Keyword(s):  
Interpolation Method ◽  
Single Layer ◽  
Two Dimensional ◽  
Dual Polarization ◽  
Ka Band ◽  
Measurement Results ◽  
Reflectarray Antenna ◽  
Terminal Antennas ◽  
Collimated Beam ◽  
Good Agreement

AbstractA novel dual-polarization, single-layer reflectarray has been designed and manufactured to operate at receive (20 GHz) and transmit (30 GHz) frequencies for Ka-band terminal antennas. The reflectarray unit cell is composed of several types of resonant elements printed on the upper side of a conductor-backed substrate, which are designed to produce a collimated beam at 20 and 30 GHz in dual polarization. Cross-shaped loops are used to provide the required phases at 20 GHz, while crossed dipoles and modified truncated rings are used to control the phasing at 30 GHz. The resonant lengths of the proposed elements have been adjusted cell by cell by means of a two-dimensional interpolation method to achieve the required phase shift at each frequency. Two different feeds have been used to illuminate the reflectarray at 20 and 30 GHz. The measured gain is 28.02 dBi at 20 GHz and 32.14 dBi at 30 GHz. The measurement results show that the radiation patterns of the designed single-layer reflectarray antenna are in good agreement with those achieved from the simulations.

Additive Manufacturing of Ka-Band Dual-Polarization Waveguide Components

2018 ◽  
Vol 66 (8) ◽  
pp. 3589-3596 ◽  
Author(s):  
Giuseppe Addamo ◽  
Oscar A. Peverini ◽  
Diego Manfredi ◽  
Flaviana Calignano ◽  
Fabio Paonessa ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Dual Polarization ◽  
Ka Band ◽  
Waveguide Components

scholarly journals Design of A Ka-Band 3D-Printed Dual-Polarization Magnetoelectric Dipole Antenna Array with Low Sidelobe

Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 2969
Author(s):  
Yikun Wang ◽  
Wenhao Tan ◽  
Kaiqiang Zhu ◽  
Hao Luo ◽  
Guoqiang Zhao ◽  
...  
Keyword(s):  
Antenna Array ◽  
Communication Systems ◽  
Three Dimensional ◽  
Dipole Antenna ◽  
Dual Polarization ◽  
Ka Band ◽  
Low Sidelobe ◽  
Cavity Structure ◽  
3D Printed ◽  
Laminated Structures

A Ka-band dual-polarization magnetoelectric (ME) dipole antenna array based on three-dimensional (3D)-printed technology with low sidelobe level (SLL) is proposed in this paper. The metal posts and cross-slots are explored to build a novel subarray with 2 × 2-unit ME-dipoles as the basic element. Creatively, a square waveguide to cross-slots transition with a pyramid horn cavity structure is investigated to feed the ME-dipole subarray. Furthermore, two types of power-tapering corporate-feed networks with laminated structures are used to design an 8 × 8-unit low-SLL array. The fabricated array has a relative bandwidth (VSWR < 2) of 14.3% and 17.1%, with a realized gain higher than 25.8 dBi and 26.1 dBi for the H-pol. and V-pol., respectively. The maximum radiation efficiency for both arrays is 73.2%. The measured first sidelobe levels are less than –17.5 dB for both polarizations. With competitive performance and low fabrication cost, the proposed dual-polarization ME-dipole antenna array would be valuable for polarization-agile radar and communication systems.

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