Collocated MIMO travelling wave SIW slot array antennas for millimetre waves

Ghalib, Asim; Sharawi, Mohammad S.; Mittra, R.; Attia, Hussein; Shammim, Atif

doi:10.1049/mia2.12110

Cited by 4 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, these arrays do not incorporate a beamsteering mechanism and thus cannot be implemented in mobile terminals yet. These arrays are in contrast to surface-emitting arrays (such as that presented in [14], which is additionally also not CP and also does not demonstrate continuous beamsteering capabilities). There are, however, several beamsteering arrays that share some or all of this paper's goals (compact form factor, circular polarization and continuous beamsteering) [21]- [26].…”

Section: Introductionmentioning

confidence: 89%

“…While large beamsteering mmWave CP systems are not difficult to implement at base stations, such solutions in mobile terminals present several limitations including power, space, compatibility with standard printed circuit board (PCB) processes, and detrimental effects of the user's hand and head on the radiation. Compatibility with standard PCB processes can be achieved through designing a fully substrate-integrated waveguide (SIW) system, with benefits such as easy manufacturing and low loss [10]- [14]. To mitigate the effects of the user on radiation patterns, one solution can be to place antenna arrays, with end-fire radiation pattern, on the edges of a mobile terminal [15], [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Compact, Circularly-Polarized, Substrate-Integrated Waveguide, Millimeter-Wave Beamsteering System for 5G Mobile Terminals

Al-Amoodi,

Mirzavand,

Honari

et al. 2024

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

A compact, circularly-polarized (CP), end-fire, 4×1 continuous beamsteering antenna array implemented using substrate-integrated waveguides for 5G mobile terminals is proposed in this paper. The purpose of this system is to complement the radiation patterns of planar phased arrays on the faces of a typical mobile terminal. The proposed system seamlessly integrates previously-presented antennas and polarizers, with adjustable phase shifters and a feeding network in a multi-layered, single stack, printed circuit board (PCB) for continuous beamsteering in a compact package. Through the use of forward and reverse couplers, and the stacking of the phase shifters on top of the feeding network, a compact form factor of 7.6×4.1×0.38λ o 3 is achieved. The system was fabricated and assembled through standard PCB processes. The measurements illustrated that the system can achieve a continuous beamsteering range of ±35 • with an axial ratio better than 3 dB and a gain variation less than 3 dB. A measured impedance bandwidth (BW) of 8.9% at 28 GHz is also demonstrated. Given its performance, size, ease of manufacture, integrated control lines and single RF feed, the proposed system is a good candidate for 5G millimeter-wave continuous beamsteering in mobile terminals.

show abstract

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

A Compact, Circularly-Polarized, Substrate-Integrated Waveguide, Millimeter-Wave Beamsteering System for 5G Mobile Terminals

Al-Amoodi,

Mirzavand,

Honari

et al. 2024

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

show abstract

“…However, their large volume makes them less suitable for practical engineering applications. Substrate integrated waveguide slot array antennas have a low profile and high gain [7][8][9][10]. However, their bandwidths become narrow when the number of radiation slots increases.…”

Section: Introductionmentioning

confidence: 99%

A low sidelobe 77 GHz centre‐fed microstrip patch array antenna

Chen,

Yan,

Guo

et al. 2023

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

A low sidelobe 77 GHz centre‐fed microstrip patch array antenna is proposed for automotive radar application. The proposed antenna comprises eight linear antenna arrays, each of which is centre‐fed by a coplanar waveguide with ground transmission line at the back of the microstrip patches. Each linear antenna array contains 10 patch antenna units, which are connected through a T‐type power divider network to achieve a −30 dB Taylor weighted distribution. The simulation results show that the designed phased array antenna has a good one‐dimensional phased scanning ability of ±45° with active voltage standing wave ratio less than 2 at 75–79 GHz, along with −20 dB low sidelobe symmetrical radiation patterns in the H plane. An antenna sample fed by a WR12 waveguide is fabricated and measured to verify its performance. The measured VSWR is less than 2 at 73.6–85 GHz. This design provides a new idea for millimetre wave automotive radar antenna design.

show abstract