A Quadruple-Polarization Reconfigurable Feeding Network for UAV RF Sensing Antenna

Seo, Dong-Geun; Kim, Ji Eun; Tentzeris, Manos M.; Lee, Wang‐Sang

doi:10.1109/lmwc.2019.2897479

Cited by 18 publications

(4 citation statements)

References 12 publications

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“…In general, two methodologies are commonly followed. On the one hand, reconfigurable radiators as in [4], [5], [6] and, on the other hand, complex reconfigurable feeding networks as in [7], [8], [9]. In general terms, these patch-based contributions suffer from low antenna efficiency.…”

Section: Introductionmentioning

confidence: 99%

Switchable T-Slot for Dual-Circularly-Polarized Slot-Array Antennas in Ka-Band

Ferrando-Rocher

Herranz-Herruzo

Valero‐Nogueira

et al. 2021

Antennas Wirel. Propag. Lett.

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This paper presents two slotted array antennas working in the Ka-band with switchable circular polarization capability. The first prototype is a series-fed slotted-waveguide linear array composed of ten T-shaped slots. The second antenna is a two-dimensional array with 2×2 T-shaped slots fed by a corporate distribution network. In both cases, a reflection coefficient below −10 dB has been experimentally observed within the targeted frequency band between 29.5 and 30.5 GHz. Good polarization purity is achieved for both polarization senses and in both prototypes. The fundamental contribution of the paper is to propose a simple mechanism to switch the circular polarization sense in a low-cost, low-profile and high-efficient antenna. The design and experimental results confirm that the solution is suitable for both one-and two-dimensional arrays in the millimeter-wave band.

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Section: Introductionmentioning

confidence: 99%

Switchable T-Slot for Dual-Circularly-Polarized Slot-Array Antennas in Ka-Band

Ferrando-Rocher

Herranz-Herruzo

Valero‐Nogueira

et al. 2021

Antennas Wirel. Propag. Lett.

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“…Experimental works on WSNs are often based on commercial motes that use either built-in chip antennas or external dipole antennas, thus providing low gain omnidirectional patterns (e.g., [ 4 ]). However, directional antennas with higher gains [ 5 ] and polarization match [ 6 ] provide significant improvements in terms of energy consumption, enlarged communication range, and even security. This comes at the price of a higher complexity due to the need of scanning the desired sensor node field of view (FoV).…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized Dual-Band LoRa/GPS Antenna for a UAV-Assisted Hazardous Gas and Aerosol Sensor

et al. 2021

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UAV assisted wireless sensor networks play a key role in the detection of toxic gases and aerosols. UAVs can be used to remotely deploy sensor nodes and then collect gas concentration readings and GPS positioning from them to delimit an affected area. For such purpose, a dual-band communication system is required, supporting GPS reception, and sensor reading data transfer, which is chosen to be at 2.4 GHz using LoRa physical layer. In this work we propose a switched-beam antenna subsystem for the sensor nodes capable not only of satisfying the dual band requirements but also of maximizing communication range or energy consumption through a good antenna polarization match and improved antenna gain. This antenna subsystem is built using dual-port, dual-band, circularly polarized antenna elements, whose design and experimental validation is carefully detailed. A low profile microstrip stacked structure has been used to obtain return loss in both bands better than 15 dB, axial ratios below 1.5 dB, and wide −3 dB beamwidths around 90° and 75° for GPS and 2.4 GHz bands, respectively, thus limiting the gain reduction of the switched-beam system in critical sensor orientations. Special attention has been paid to reduce the coupling between both ports through the optimization of the relative placement of both patches and their feeding points. The measured coupling is below −30 dB.

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“…In [6], the authors proposed a reconfigurable corner-truncated patch loading with four PIN diodes to achieve linear polarization (LP), left-hand circular polarization (LHCP), and right-hand circular polarization (RHCP), resulting in a 3-dB axial ratio (AR) bandwidth of 1.5 % for LHCP and RHCP modes. Another widely-used one is to use reconfigurable feeding networks [9]- [14]. The authors in [13] designed a microstrip-slot linecoplanar waveguide feed network loading with three PIN diodes Manuscript received June, 2020.…”

Section: Introductionmentioning

confidence: 99%

A Wideband 3-D Printed Reflectarray Antenna With Mechanically Reconfigurable Polarization

Mei

Zhang

Pedersen

2020

Antennas Wirel. Propag. Lett.

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This letter describes a wideband and polarizationreconfigurable reflectarray (RA) antenna using 3D printed technology for 5G millimeter-wave applications. An air-perforated dielectric stub is proposed as a unit cell (UC) to provide simultaneous polarization-rotation and phase-shifting capabilities. By optimizing the dimensions of the UC, four UCs are found to offer a 90-degree out of phase for transverse electric (TE) and transverse magnetic (TM) incidence waves and a 2-bit reflection phase of {-π, -π/2, 0, π/2}, which are employed to implement the reflective panel. By rotating the reflective panel mechanically, the proposed RA antenna can achieve linear polarization (LP), left-hand circular polarization (LHCP), and right-hand circular polarization (RHCP) modes. The measured results are highly consistent with the simulated counterparts, indicating that the proposed RA antenna can reach a 3-dB axial ratio (AR) bandwidth of 43.2 %, and 37.5 % for RHCP and LHCP modes, respectively. Besides, a 3-dB gain bandwidth of 37.5 %, 34.4 %, and 37.5 % is experimentally obtained for RHCP, LHCP, and LP modes of the proposed RA antenna, respectively.

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A Quadruple-Polarization Reconfigurable Feeding Network for UAV RF Sensing Antenna

Cited by 18 publications

References 12 publications

Switchable T-Slot for Dual-Circularly-Polarized Slot-Array Antennas in Ka-Band

Switchable T-Slot for Dual-Circularly-Polarized Slot-Array Antennas in Ka-Band

Circularly Polarized Dual-Band LoRa/GPS Antenna for a UAV-Assisted Hazardous Gas and Aerosol Sensor

A Wideband 3-D Printed Reflectarray Antenna With Mechanically Reconfigurable Polarization

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