Dual-circular polarised patch antenna array on LCP for 60 GHz millimetre-wave identification

Lamminen, Antti; Aurinsalo, Jouko; Säily, Jussi; Karttaavi, T.; Francey, Jim; Bateman, Terry

doi:10.1109/eucap.2014.6901813

Cited by 6 publications

(6 citation statements)

References 7 publications

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“…Arrays with a large number of antenna elements occupy a large space and are complex to assemble, but it will be very convenient to apply such packaged antennas for engineering applications. Moreover, in the future, the multilayered liquid crystal polymer (LCP) technology will be very suitable for manufacturing of high-efficient and low-cost arrays at microwave frequencies, 155,156 and the 3D heterogeneous integration is possible to become an promising technology to facilitate a new wave of innovation in ICs. 157,158…”

Section: Discussion and Prospectmentioning

confidence: 99%

A review of microwave electronically scanned array: Concepts and applications

Sun

Zhao

Zheng

et al. 2022

Int J RF Mic Comp-Aid Eng

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As the application of microwave to radar and 5G communication goes wider, the array beam scanning capability has become an important and popular issue in modern society. Appropriate implementation of beam scanning methods suitable for diverse conditions could provide better performance and help to save costs for a system. Moreover, electronically scanned array has the characteristics of fast beam switching rate, high measurement accuracy and low profile. Thus, discussions on typical electronic scanning approaches are particularly necessary. This paper first presents a review of typical electronic scanning approaches to microwave arrays, such as the phased array, the focused aperture array, the frequency scanning array, and the time modulated array. And then some latest designs in the industry have been introduced. In addition, problems appeared in the application of the phased array and relevant solutions have been put forward. For the rest, some discussions are briefly summarized, as well as some comments on future trend in this field.

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Section: Discussion and Prospectmentioning

confidence: 99%

A review of microwave electronically scanned array: Concepts and applications

Sun

Zhao

Zheng

et al. 2022

Int J RF Mic Comp-Aid Eng

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“…In the development of the flexible and conformable high-frequency components, substrate materials are crucial to the deployment of the low-cost and power-efficient broadband wireless systems [28,29]. In this regard, Rogers ULTRALAM 3850HT liquid-crystal polymer (LCP) flexible and recyclable laminates exhibit significant combination of the electrical, thermal, chemical, and mechanical properties, for the improved construction of the high-speed mm-wave devices and systems at higher temperatures (i.e., the permeation of gases through the material is not affected by the humidity) [30][31][32][33]. The LCP material has low moisture absorption and can also withstand chemical exposure, as well as temperature variations, and further exhibits dielectric constants of 2.9-3.1 and loss tangent less than 0.005, throughout the RF range up to 110-GHz, with a substrate thickness of 100 µm [34].…”

Section: Planar Design and Evaluationmentioning

confidence: 99%

Analytical and Numerical Evaluations of Flexible v-Band Rotman Lens Beamforming Network Performance for Conformal Wireless Subsystems

Rahimian¹,

Alfadhl²,

Alomainy³

2016

PIER B

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This paper presents the analytical design and numerical performance evaluation of novel V-band millimetre-wave (mm-wave) beamforming networks (BFNs), based on the Rotman lens array feeding concept. The devices are intended for operation in the unlicensed 60-GHz frequency band. The primary objective of this work is to study the feasibility of designing flexible V-band beamformers, based on liquid-crystal polymer (LCP) substrates. The planar Rotman lens device has been initially developed, and the output performances, in terms of the scattering parameters and accuracy, have been analysed. This is further continued with the detailed designs of the Rotman lens BFNs based on the four different proposed flexural cases, namely the concave-axial bending, the convex-axial bending, the concave-circumferential bending, and the convex-circumferential bending. Each of the flexures has been analysed, and the performance in terms of the surface currents and phase distributions, as the primary functionality indicators, has been presented. The presented flexible beamformers exhibit significant characteristics to be potentially employed as low-cost and efficient units of the mm-wave transceivers with the in-built electronic beam steering capabilities for the conformal wireless subsystems.

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“…Meanwhile, polarization diversity and the use of circular polarization are important to improve the spectral efficiency and compensate for the polarization mismatch in wireless communication systems. In particular, the use of circular polarization can effectively suppress multi-path fading in line-of-sight (LOS) environments and give a higher probability of a successful link [13][14][15][16][17][18]. This is due to the fact that circularly polarized signals are much better at penetrating and bending around obstacles compared with linearly polarized signals.…”

Section: Introductionmentioning

confidence: 99%

Dual-Circularly Polarized 60 GHz Beam-Steerable Antenna Array with 8 × 8 Butler Matrix

2020

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A beam-steerable dual-circularly polarized 60 GHz antenna array is proposed. A 1 × 4 dual-fed stacked patch antenna array is integrated with an 8 × 8 Butler matrix. By utilizing the 8 × 8 Butler matrix, the proposed antenna array generates dual-circular polarization with beam-steering capability. The proposed antenna array system demonstrates good reflection coefficients in the frequency band ranging from 55.3 GHz to 64.9 GHz and has a mutual coupling of less than −10 dB over the frequency range of 57.5 GHz–63.2 GHz. At 60 GHz, the maximum gains and beam-steering angles for input ports 2, 4, 5, and 7 are 9.39 dBi at −38°, 10.67 dBi at −11°, 10.63 dBi at +11°, and 9.38 dBi at +39°, respectively. It is also demonstrated that the dual-polarization is well formed by switching the excitation ports. The right-handed circular polarization (RHCP) is formed when four ports from port 1 to port 4 are excited and left-handed circular polarization (LHCP) is formed when four ports from port 5 to port 8 are excited. The proposed antenna array system could be a good candidate for millimeter-wave 5G applications that require wide beam coverage and polarization diversity.

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Dual-circular polarised patch antenna array on LCP for 60 GHz millimetre-wave identification

Cited by 6 publications

References 7 publications

A review of microwave electronically scanned array: Concepts and applications

A review of microwave electronically scanned array: Concepts and applications

Analytical and Numerical Evaluations of Flexible v-Band Rotman Lens Beamforming Network Performance for Conformal Wireless Subsystems

Dual-Circularly Polarized 60 GHz Beam-Steerable Antenna Array with 8 × 8 Butler Matrix

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