scholarly journals Millimetre‐wave beam‐steering array antenna by emphasising on improvement of Butler matrix features

2019 ◽  
Vol 13 (9) ◽  
pp. 1287-1292 ◽  
Author(s):  
Zahra Mousavi ◽  
Pejman Rezaei
Keyword(s):  
Wave Beam ◽  
Beam Steering ◽  
Array Antenna ◽  
Millimetre Wave ◽  
Butler Matrix

scholarly journals Circularly‐polarised end‐fire antenna and arrays for 5G millimetre‐wave beam‐steering systems

2020 ◽  
Vol 14 (9) ◽  
pp. 980-987 ◽  
Author(s):  
Khaled Al‐Amoodi ◽  
Mohammad Mahdi Honari ◽  
Rashid Mirzavand ◽  
Jordan Melzer ◽  
Duncan G. Elliott ◽  
...  
Keyword(s):  
Wave Beam ◽  
Beam Steering ◽  
Millimetre Wave

Photonics-enabled Millimetre-wave Phased-Array Antenna with True Time Delay Beam-steering

2021 ◽  
Author(s):  
Muhsin Ali ◽  
Robinson Cruzoe-Guzman ◽  
Luis Enrique Garcia-Munoz ◽  
Frederic van Dijk ◽  
Guillermo Carpintero
Keyword(s):  
Time Delay ◽  
Phased Array ◽  
Beam Steering ◽  
Array Antenna ◽  
Phased Array Antenna ◽  
Millimetre Wave ◽  
True Time Delay ◽  
True Time

Modified circularly polarised beam steering array antenna by utilised broadband coupler and 4 × 4 butler matrix

2015 ◽  
Vol 9 (9) ◽  
pp. 975-981 ◽  
Author(s):  
Saeid Karamzadeh ◽  
Vahid Rafii ◽  
Mesut Kartal ◽  
Bal S. Virdee
Keyword(s):  
Beam Steering ◽  
Array Antenna ◽  
Butler Matrix

Millimeter-wave beam-steering high gain array antenna by utilizing metamaterial zeroth-order resonance elements and Fabry-Perot technique

2018 ◽  
Vol 10 (3) ◽  
pp. 376-382 ◽  
Author(s):  
Asghar Bakhtiari ◽  
Ramezan Ali Sadeghzadeh ◽  
Mohammad Naser-Moghaddasi
Keyword(s):  
Millimeter Wave ◽  
Wave Beam ◽  
Beam Steering ◽  
High Gain ◽  
Array Antenna ◽  
Antenna Element ◽  
Zeroth Order ◽  
Order Resonance ◽  
Fabry Perot ◽  
Feed Network

Millimeter-wave (mm-wave) beam-steering antennas are preferred for reducing the disruptive effects, such as those caused by high atmospheric debilitation in wireless communications systems. In this work, a compact broadband antenna array with a low loss feed network design is introduced. To overcome the short-range effects on mm-wave frequencies, a feed network – with a modified Butler matrix and a compact zeroth-order resonance antenna element – has been designed. Furthermore, the aperture feed technique has been utilized to provide a broadside stable pattern and improve the delivered gain. A Fabry-Perot layer without the height of the air layer is used. Taking advantage of this novel design, a broadband and compact beam-steering array antenna – capable of covering impedance bandwidths (from 33.84 to 36.59 GHz) and scanning a solid angle of about ~94°, with a peak gain of 17.6 dBi – is attained.

Simultaneous beam steering of multiple signals based on optical wavelength-selective switch

2015 ◽  
Vol 7 (3-4) ◽  
pp. 391-398
Author(s):  
Giovanni Serafino ◽  
Antonio Malacarne ◽  
Claudio Porzi ◽  
Paolo Ghelfi ◽  
Marco Presi ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
Phase Shifter ◽  
Phased Array ◽  
Beam Steering ◽  
Array Antenna ◽  
Ring Resonators ◽  
Antenna Element ◽  
Phased Array Antenna ◽  
Wavelength Selective Switch

A novel, photonics-based scheme for the independent and simultaneous beam steering of multiple radio frequency signals at a wideband phased-array antenna is presented. As a proof of concept, a wavelength-selective switch (WSS) is employed both as a wavelength router to feed multiple antenna elements and as a tunable phase shifter to independently control the phase of each signal at any antenna element. In the experiment, two signals at 12.5 and 37.5 GHz are simultaneously fed to the four output ports of the WSS with independent and tunable phase shifts, emulating the independent steering of two signals in a four-element phased-array antenna. The results confirm the precision and flexibility of the proposed scheme, which can be realized both with bulk components or resorting to photonic integrated circuits, especially for wide-band applications. The architecture for a possible integrated implementation of the proposed solution is presented, employing a structure based on micro-ring resonator. Starting from these results, the feasibility of an integrated version of the presented architecture is also considered. The proposed photonic integrated circuit realizing the beam-forming network might be based on tunable true-time delay, as well as on phase shift through micro-ring resonators, and could be conveniently implemented with CMOS-compatible silicon technology.

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