W-band capacitively loaded slow-wave transmission line phase shifter in 130nm CMOS

Venter, Johannes J. P.; Stander, Tinus

doi:10.1109/afrcon.2017.8095541

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…A summary of the representative ones in the low THz frequencies can be found in Table I. [2][3][4][5][6][7][8] Among these, phase shifters using liquid crystal (LC) materials are appealing because of their excellent phase modulation capabilities, low loss, and tunability. However, the most significant drawback lies in the decay time.…”

Section: Introductionmentioning

confidence: 99%

Continuously reconfigurable 100 GHz band phased array antenna with improved response time using a microfiber/liquid crystal composite

Lang,

Inoue,

Moritake

2024

Jpn. J. Appl. Phys.

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A 100-GHz band phased array antenna (PAA) based on a microfiber/liquid crystal composite is reported. This antenna features a simple and cost-effective design while delivering outstanding performance. Experimental results demonstrate that our PAA structure exhibits a high gain of nearly 11 dBi, continuous steering across a broad range of approximately 82.5°, and rapid switching times ranging from 80 to 260 ms.

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Section: Introductionmentioning

confidence: 99%

Continuously reconfigurable 100 GHz band phased array antenna with improved response time using a microfiber/liquid crystal composite

Lang,

Inoue,

Moritake

2024

Jpn. J. Appl. Phys.

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“…by a motor, since the necessary mechanical components consume space and have to be maintained. Hence, electrically reconfigurable components are employed [1] such as micro-electromechanical systems (MEMS) [2], semiconductors [3], barium strontium titanate (BST) [4], [5], and liquid crystal (LC) [6]. At higher mmW frequencies, semiconductors and BST show increased loss.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Liquid Crystal Dielectric Image Line Leaky Wave Antenna at W-Band

et al. 2022

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This paper presents a reconfigurable dielectric image line leaky wave antenna at W-band. Reconfigurability is achieved by applying bias to anisotropic liquid crystal (LC) filled into the antenna. Instead of separating RF components and DC-bias network by complex or space consuming methods, the bias electrodes are simultaneously used as radiation elements. In order to evaluate this concept, a non-reconfigurable antenna with isolated unit cells is compared to a reconfigurable antenna, which has its unit cells connected by a metallic line. The non-reconfigurable demonstrator shows gain of up to 18 dBi and can scan through broadside from −30 • to +10 • in the investigated frequency range from 75 GHz to 102 GHz. This frequency scanning sector can be shifted by 10 • when utilizing the reconfigurable LC antenna, while gain of up to 15 dBi is maintained. Since the bias electrodes are directly mounted on the image line, less than 50 V is necessary to control the LC. The antenna is comparably easy to fabricate, and only one bias voltage is directly related to a steering angle, which can be advantageous compared to complex phased arrays with multiple LC phase shifters.INDEX TERMS Beam steering, dielectric image line, leaky wave antennas, liquid crystal, W-band.

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Liquid Crystal Based Parallel-Polarized Dielectric Image Guide Phase Shifter at W-Band

Tesmer

Reese

Polat

et al. 2020

2020 IEEE/MTT-S International Microwave Symposium (IMS)

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W-band capacitively loaded slow-wave transmission line phase shifter in 130nm CMOS

Cited by 7 publications

References 9 publications

Continuously reconfigurable 100 GHz band phased array antenna with improved response time using a microfiber/liquid crystal composite

Continuously reconfigurable 100 GHz band phased array antenna with improved response time using a microfiber/liquid crystal composite

Reconfigurable Liquid Crystal Dielectric Image Line Leaky Wave Antenna at W-Band

Liquid Crystal Based Parallel-Polarized Dielectric Image Guide Phase Shifter at W-Band

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