Compact tunable Ka-band phase shifter based on liquid crystals

Moessinger, Alexander; Fritzsch, Carsten; Bildik, Saygin; Jakoby, Rolf

doi:10.1109/mwsym.2010.5517405

Cited by 21 publications

(7 citation statements)

References 9 publications

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“…Therefore, in order to obtain more than 360 • phase shift, a larger number of poles or wider bandwidth is required for Elliptical circuits. The dual-mode ring resonator circuit [19] is an example of Elliptical circuits which has been used as a Ka-band phase shifter.…”

Section: Band-pass Phase Shiftersmentioning

confidence: 99%

“…The Resonance-Based Phase shifters (RBP) use resonating elements whose characteristics are electronically tuned to obtain the required phase shift [19][20][21][22][23]. This type of phase shifter can easily provide 360 degree phase shift with moderate insertion loss, in a compact package size For high performance Ka-band phased array transmitters consisting of very large number of antennas (typically, several thousand elements) with antenna cell size of 5 mm × 5 mm, the Resonance-Based phase shifter is considered as the suitable candidate.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Resonance-Based Phase Shifters on Ka-Band Phased Array Antenna Performance for Satellite Communications

Mohajer¹,

Faraji-Dana²,

Safavi‐Naeini³

2014

PIER B

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Phase shifters are the key components of phased array systems which provide a low-profile solution for Ka-band satellite communications. In the transmitting mode, it is crucial for the phased array antenna system to meet the standard radiation masks, and any imperfections of phase shifters can yield into radiation mask violation. In this paper, we present the analytical approach to model the non-linear phase-frequency characteristics of Resonance-Based phase shifters, which constitute one of the most widely used class of phase shifters for Ka-band satellite communications. Furthermore, it has been investigated how the phase-frequency response non-linearity affects the phased array radiation patterns, gain, and the beam pointing direction. The simulation results show that, depending on the phase shifter phase-frequency response profile, the radiation mask satisfaction is an important factor in determining the system bandwidth.

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Section: Band-pass Phase Shiftersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Resonance-Based Phase Shifters on Ka-Band Phased Array Antenna Performance for Satellite Communications

Mohajer¹,

Faraji-Dana²,

Safavi‐Naeini³

2014

PIER B

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“…LC has been incorporated into a great deal of electromagnetic devices including phase shifter [31,32], reconfigurable antennas [33,34], and metasurface [35,36] to date.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Reflective Digital Metasurfaces of Arbitrary Base Based on Liquid Crystal Technology

Zhao¹,

Qing²

2020

Preprint

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This paper presents a multifunctional reflective digital metasurface of arbitrary base based on voltage tunable liquid crystal (LC). The reflective digital metamaterial can be multiplexed for different desirable functions by properly biasing the LC for different code patterns. Simulation results of three significant functions, beam steering with a steering elevation angle 27° at 75 GHz, RCS reduction of at least 15dB along the incident direction, and beam shaping with different beam shapes have been presented to prove the concept.

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“…Material characterization of LC has been extensively carried out in microwave and millimeter-wave frequencies. Prominent functions with the help of LC include phase shifter [19], [20], leaky-wave antennas [21], [22], and metasurface [23], [24].…”

Section: Introductionmentioning

confidence: 99%

A Digital Metamaterial of Arbitrary Base Based on Voltage Tunable Liquid Crystal

et al. 2019

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In this paper, a digital metamaterial of arbitrary base based on liquid crystal (LC) is proposed. The digital metamaterial can be multiplexed for different desirable functions by properly biasing the LC for different code patterns. Simulation results of two common functions, beam steering with a steering elevation angle 27 • and RCS reduction of at least 10 dB from 51 to 56 GHz, have been presented to prove the concept. The feasibility has been further confirmed by preliminary measurement.INDEX TERMS Coding metamaterial, digital metamaterial, liquid crystal (LC), coding particle, beam steering, RCS reduction.

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Compact tunable Ka-band phase shifter based on liquid crystals

Cited by 21 publications

References 9 publications

Effects of Resonance-Based Phase Shifters on Ka-Band Phased Array Antenna Performance for Satellite Communications

Effects of Resonance-Based Phase Shifters on Ka-Band Phased Array Antenna Performance for Satellite Communications

Multifunctional Reflective Digital Metasurfaces of Arbitrary Base Based on Liquid Crystal Technology

A Digital Metamaterial of Arbitrary Base Based on Voltage Tunable Liquid Crystal

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