Mechanically Reconfigurable Linear Array Antenna Fed by a Tunable Corporate Waveguide Network With Tuning Screws

Sánchez-Olivares, Pablo; Masa‐Campos, José Luis; Muriel-Barrado, Alfonso Tomas; Villena-Medina, Raquel; Fernandez-Romero, Gema Maria

doi:10.1109/lawp.2018.2848911

Cited by 10 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The depth and thickness of these screws in resonant cavities modify the resonance conditions and produce a frequency shift of the operation band. Similarly, waveguide slot antennas with reconfigurable beams at the K u band have been proposed using screws that modify the phase of the fields in the waveguide [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanically Reconfigurable Waveguide Filter Based on Glide Symmetry at Millimetre-Wave Bands

Tamayo‐Domínguez

Fernández-González

Quevedo–Teruel

2022

Sensors

View full text Add to dashboard Cite

This paper presents the design and fabrication of a mechanically reconfigurable filter at W band based on the concept of glide symmetry. The tunability is achieved by breaking and regenerating the glide symmetry. The filters are made of two glide-symmetric pieces that can be displaced in a certain direction, and therefore, break the symmetry. The high filtering capacity of these designs is demonstrated by simulation and measurement and can also be adjusted mechanically. The transmission level in the manufactured filter varies from a value between −1 and −2 dB when the filter is in the glide symmetry position to values close to −40 dB in the stop-band when it is in the broken symmetry position. The transmission band obtained in the symmetrical mode is around 20%, but, after breaking the symmetry, it is split into two passbands of 6.5% and 11% separated by a stop-band of 6%. The position, bandwidth, filtering level and filter roll-off can be adjusted for both modes of operation by appropriately selecting the unit cell design parameters and the number of unit cells.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanically Reconfigurable Waveguide Filter Based on Glide Symmetry at Millimetre-Wave Bands

Tamayo‐Domínguez

Fernández-González

Quevedo–Teruel

2022

Sensors

View full text Add to dashboard Cite

show abstract

“…Various techniques have been proposed in the literature for performing the beam tilting, such as mechanical and electronic methods. In spite of the drawbacks of bulky structure and low switching speed of the mechanical method, it provides a large scan angle in comparison with other methods [5]. On the other hand, the electronic method provides high switching speed and small physical structure.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable metamaterial structure for 5G beam tilting antenna applications

Esmail

Majid

Dahlan

et al. 2020

Waves in Random and Complex Media

View full text Add to dashboard Cite

In this paper, we propose a metamaterial (MTM) structure with a reconfigurable property designed to operate at the millimetre-wave (mm-wave) spectrum. Four switches are used to achieve the reconfigurable property of the MTM with two configurations. These two configurations exhibit different refractive indices, which used to guide the radiation beam of the antenna to the desired direction. The proposed planar dipole antenna operates at the 5th generation (5G) band of 28 GHz. The electromagnetic (EM) rays of the proposed antenna pass through different MTM configurations with different phases, subsequently results in the tilting of the radiation beam toward MTM configuration of high refractive index. Simulated and measured results of the proposed antenna loaded by MTM demonstrate that the radiation beam is tilted by angles of +34º and-31º in the E-plane depending on the arrangement of two MTM configurations onto the antenna substrate. Furthermore, the gain is improved by 1.7 dB and 1.5 dB for positive and negative tilting angles, respectively. The reflection coefficients of the antenna with MTM are kept below-10 dB at 28 GHz.

show abstract

“…In this field, Tuning Screws (TS) have been extensively used in the last decades to tune filters [19] or to implement reconfigurability in waveguide devices [20], [21]. Recently, this technique has been proposed by the authors to implement reconfiguration in waveguide array antennas [22]- [24] achieving satisfactory results in terms of radiation efficiency, power losses and scanning performance.…”

Section: Introductionmentioning

confidence: 99%

“…In [24] a linear array antenna fed by a corporate waveguide network was presented. Thanks to the insertion of TS in the feeding network, the phase of the signal at each of the outputs could be controlled producing therefore a scan of the radiation pattern.…”

Section: Introductionmentioning

confidence: 99%

“…The approach introduced in this paper benefits from the inherent advantages of waveguide antennas like high efficiency, low losses and high power handling capabilities. In addition, it presents two important advantages over the design in [24]. First, the progressive phase shift between array elements can be adjusted continuously, enabling to scan the radiation pattern main beam to any desired direction instead of fixed values.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanically Reconfigurable Linear Phased Array Antenna Based on Single-Block Waveguide Reflective Phase Shifters With Tuning Screws

et al. 2020

Self Cite

View full text Add to dashboard Cite

This work presents the design and prototyping of a reconfigurable phased array in Ku band (16 to 18 GHz) implemented in waveguide technology. The design is based on the use of a novel seamless waveguide module integrating four reconfigurable phase shifters to adjust the relative phase shift between the unitary elements of a linear array, which are illuminated uniformly by a corporate waveguide feeding network. The phase shifters are implemented by a 90 ○ hybrid coupler in waveguide technology where two of its ports are loaded with a tunable reactive load, implemented in this proof of concept with a tuning screw. The four phase shifters have been manufactured in a single part using direct metal laser sintering, avoiding the losses related to bad electric contacts and misalignments associated to multipart devices. This also simplifies the assembly of the full phased array, leading to a modular approach with three parts whose design can be addressed separately. The experimental results for the complete array antenna show great performance and demonstrate that the main-lobe of the radiation pattern can be effectively scanned continuously between the angles −25 ○ and 25 ○ , with a high efficiency in the whole design band thanks to the proposed waveguide implementation.

show abstract

Mechanically Reconfigurable Linear Array Antenna Fed by a Tunable Corporate Waveguide Network With Tuning Screws

Cited by 10 publications

References 14 publications

Mechanically Reconfigurable Waveguide Filter Based on Glide Symmetry at Millimetre-Wave Bands

Mechanically Reconfigurable Waveguide Filter Based on Glide Symmetry at Millimetre-Wave Bands

Reconfigurable metamaterial structure for 5G beam tilting antenna applications

Mechanically Reconfigurable Linear Phased Array Antenna Based on Single-Block Waveguide Reflective Phase Shifters With Tuning Screws

Contact Info

Product

Resources

About