A millimeter-wave quasi-optical grid phase shifter using liquid crystal
スポンサーリンク
概要
- 論文の詳細を見る
A new type of millimeter-wave quasi-optical variable phase shifter which exploits the dielectric anisotropy of liquid crystal (LC) materials is presented. The device is operated in transmission mode and consists of inductive and capacitive metal grids, each patterned on a dielectric substrate, which are separated by a thin layer of LC. The grids together with the LC form a parallel resonant circuit. Prototype devices with a 25-µm-thick LC layer for use at a millimeter-wave frequency of 50GHz were designed and fabricated. Experiments performed at U-band frequencies show that a phase shift of 7.8° is obtained with a low insertion loss of ∼ 0.6dB at the resonant frequency by applying a control signal of 20V. Good time response for the device is demonstrated. It is suggested that the phase shift attainable with the device can be further enhanced by using LC materials with larger dielectric anisotropy and/or thinner dielectric substrates.
- The Institute of Electronics, Information and Communication Engineersの論文
著者
-
Okada Hiroyuki
Graduate Scholl of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
-
Nose Toshiaki
Faculty of Systems Science and Technology, Akita Prefectural University
-
Murai Tadakuni
Graduate School of Science and Engineering for Research, University of Toyama
-
Nozokido Tatsuo
Graduate School of Science and Engineering for Research, University of Toyama
-
Miyasaka Noriyuki
Graduate School of Science and Engineering for Research, University of Toyama
-
Maede Satoshi
Graduate School of Science and Engineering for Research, University of Toyama
関連論文
- Organic Field-Effect Transistor Integrated Circuits using Self-Alignment Process Technology
- Build-on Technology of Bi-Directional Optical Communication System using Bi-Functional Organic Diodes
- Light-Emitting Seal Using Self-Aligned Organic Light-Emitting Structure
- Solution-Processed Small Molecular Organic Light-Emitting Devices with a Mixed Single Layer
- Front-Light Source Using Inverted Organic Light-Emitting Diodes with Microcathode Arrays
- Evaluation of Reliability in Rubrene-Based Organic Light Emitting Devices with a Mixed Single Layer
- Enhancement of Electron Injection in Organic Light-Emitting Diodes with Photosensitive Charge Generation Layer
- Organic Thin-Film Transistors with Tailored Liquid Sources of High-$\kappa$ HfO2 Using Excimer Laser Irradiation
- Temperature Dependence of Trap Density Distribution in Poly(3-hexylthiophene) and 1-(3-Methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 Based Blending Films under Illumination
- Fully Self-Aligned Organic Field-Effect Transistors
- Organic Thin-Film Transistors with Tailored Liquid Sources of HfO2 as a High-$\kappa$ Insulator
- Improved Cathode Interface Contact in Poly(3-hexylthiophene) and 1-(3-Methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 Based Organic Bulk Heterojunction Solar Cells by Introducing Compressive Stress
- Build-on Technology of Bidirectional Optical Communication System Using Bifunctional Organic Diodes
- Transparent-Oxide–Semiconductor-Based Self-Alignment Thin-Film Transistors
- Investigation of Solution-Processed Organic Light-Emitting Diode Fabrication on Patterned Line Structure Using Bar-Coating Method
- Complementary Circuit with Self-Alignment Organic/Oxide Thin-Film Transistors
- Improved Cathode Interface Contact in Poly(3-hexylthiophene) and 1-(3-Methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 Based Organic Bulk Heterojunction Solar Cells by Introducing Compressive Stress
- Organic Bifunctional Devices with Emission and Sensing Abilities
- Organic Field-Effect Transistor Integrated Circuits using Self-Alignment Process Technology
- Approaches to Realizing Sheet-Type Scanner with Scanning Light Source
- Performance Enhancement of Top-Contact Pentacene-Based Organic Thin-Film Transistors with Bilayer WO
- Surface Roughness of Organic Semiconductor Superlattice Using Pentacene as Semiconductor
- A millimeter-wave quasi-optical grid phase shifter using liquid crystal
- Organic Light-Emitting Diode with Solution-Processed Molybdenum Trioxide from Dilute Aqueous Solution