Gain enhanced millimetre-wave beam-switching Rotman lens antenna designs on LCP

Lamminen, Antti; Säily, Jussi; Kaunisto, Mikko; Pokorný, Michal; Aurinsalo, Jouko; Raida, Zbyněk

doi:10.23919/eucap.2017.7928483

Cited by 8 publications

(12 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Highly directional antennas with beam steering capability are essential to counter the high propagation loss at millimeter-wave band and cover wide steering range. The series array together with the beamforming networks such as Rotman lens or butler matrix is an appropriate solution for the millimeter-wave communication system [2].…”

Section: Introductionmentioning

confidence: 99%

Millimeter-wave stepped series array with LTCC

Karki

Ala‐Laurinaho

Zheng

et al. 2019

2019 49th European Microwave Conference (EuMC)

View full text Add to dashboard Cite

The series fed antenna arrays are widely used to minimize the feeding losses. A novel method to control the coupling/admittance between the series array elements is studied. In this work, two substrate integrated waveguide (SIW) fed aperture coupled 1×4 patch arrays are designed on the LTCC platform. The admittance of the array elements are controlled with the stepped SIW and the non-uniform aperture coupling technique. The simulated and measured −10-dB impedance bandwidth of the designed antenna is approx. 6-7%. At 75 GHz, the maximum boresight directivity and realized gain of the designed antennas are 12 dB and 9 dBi, respectively. Additionally, a microstrip line (MSL)-SIW vertical transition structure is designed to facilitate the multi-layered RF structure in LTCC.

show abstract

Section: Introductionmentioning

confidence: 99%

Millimeter-wave stepped series array with LTCC

Karki

Ala‐Laurinaho

Zheng

et al. 2019

2019 49th European Microwave Conference (EuMC)

View full text Add to dashboard Cite

show abstract

“…It is inevitable to have the high loss due to the two cascaded switches and the material losses due to PCB technology at 28 GHz frequency. For this reason, some PCB-based designs employ amplifiers in the feed network [78,79] In [78], the losses of the switch, the Rotman lens and the transmission lines were 3 dB, 3 dB and 2 dB, respectively. This resulted in total loss of 8 dB but with only 4 beams and one cascaded switch.…”

Section: Discussion and Comparison With Similar Antenna Arraysmentioning

confidence: 99%

“…This resulted in total loss of 8 dB but with only 4 beams and one cascaded switch. In [79], the reported [III] Design of an antenna decoupling structure for an in-band full duplex collinear dipole array A decoupling element for two collinear dipoles is designed for in-band fullduplex applications. The decoupling element is studied with parametric sweeps and by studying the scattered fields.…”

Section: Discussion and Comparison With Similar Antenna Arraysmentioning

confidence: 99%

PCB-Based Design of a Beamsteerable Array With High-Gain Antennas and a Rotman Lens at 28 GHz

Heino

Icheln

Haarla

et al. 2020

Antennas Wirel. Propag. Lett.

View full text Add to dashboard Cite

“…The simplification of such lens type stems from using standard photolithography method, widely used for rapid circuit boards fabrication. A Rotman lens with a compact antenna array and integrated amplifiers at 60 GHz is shown to be capable of beam-steering and active beam-switching at the same time [16]. Both these functions are essential for hybrid MIMO operation [6].…”

Section: Lens Based Beamformersmentioning

confidence: 99%

Constant-${\epsilon}_{r}$ Lens Beamformer for Low-Complexity Millimeter-Wave Hybrid MIMO

Abbasi

Fusco

Tataria

et al. 2019

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

It is well established that the utilization of unused millimeter-wave (mmWave) spectrum is inevitable due to unavailability of required bandwidth in the conventional RF band to support the high data demands of 5G. Large antenna arrays with beamforming capabilities are required to compensate for the high path-loss at mmWave frequencies. We are at the verge of a massive mmWave radio front-end deployment and low-complexity low-cost hardware beamforming solutions are required now at this stage than ever before. In this work, one such solution is demonstrated and analyzed. A high performance and low-complexity lens based beamformer consisting of constant dielectric material (r) with antenna-feeds is presented for multibeams operation. A prototype is developed based on the classical synthesis approach, and in line with the requirements of mmWave hybrid multiuser multiple-input multiple-output (MU-MIMO) systems. A characterization at 28 GHz is performed wherein uplink signal-to-noise-ratio of user terminals is evaluated with the zero-forcing (ZF) baseband signal processing. Radiation performance of a single source beamformer is measured in an anechoic environment and end-to-end ergodic sum spectral efficiency performance is estimated based on the measured data. It is shown that the constantr based beamformer solution is simple, yet significantly outperforms conventional antenna array beamformers with analog phase shifter network, making it a promising candidate for future hybrid massive MIMO systems.

show abstract

Gain enhanced millimetre-wave beam-switching Rotman lens antenna designs on LCP

Cited by 8 publications

References 5 publications

Millimeter-wave stepped series array with LTCC

Millimeter-wave stepped series array with LTCC

PCB-Based Design of a Beamsteerable Array With High-Gain Antennas and a Rotman Lens at 28 GHz

Constant-${\epsilon}_{r}$ Lens Beamformer for Low-Complexity Millimeter-Wave Hybrid MIMO

Contact Info

Product

Resources

About