Compact left handed coplanar strip line phase shifter on screen printed BST

Sazegar, Mohsen; Zheng, Yelong; Maune, Holger; Zhou, Xianghui; Damm, Christian; Jakoby, Rolf

doi:10.1109/mwsym.2011.5972805

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…The functionality of many tunable microwave devices is based on the use of ferroelectric thick films. Among these, especially barium strontium titanate (Ba x Sr 1‐x TiO 3 , BST) demonstrated great potential in devices such as tunable phase shifters, matching networks, filters or antennas . Its relative permittivity can be changed by applying an electrostatic field, which allows the preparation of tunable capacitors (varactors).…”

Section: Introductionmentioning

confidence: 99%

Fully Screen‐Printed Tunable Microwave Components Based on Optimized Barium Strontium Titanate Thick Films

Köhler

Nikfalazar

Friederich

et al. 2014

Int J Applied Ceramic Tech

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The composite system Ba 0.6 Sr 0.4 TiO 3 -ZnO-B 2 O 3 for thick film preparation has been modified via copper-fluorine codoping of BST to make it suitable for the fabrication of co-fired metal-insulator-metal (MIM) components. Based on the resulting improvement of the thick films, MIM varactors and phase shifters were produced by subsequent screen-printing of silver and BST pastes as well as co-firing. Microstructural investigations showed the compatibility of silver and BST with neither chemical reaction nor cracking of the layers. The microwave characterization revealed good results regarding tunability and quality factor of the varactors and high figure of merit of 70°/dB at 1.72 GHz for the phase shifter.

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Section: Introductionmentioning

confidence: 99%

Fully Screen‐Printed Tunable Microwave Components Based on Optimized Barium Strontium Titanate Thick Films

Köhler

Nikfalazar

Friederich

et al. 2014

Int J Applied Ceramic Tech

Self Cite

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“…Barium Strontium Titanate (Ba x Sr 1‐x TiO 3 , BST) has gained great attention as a tunable material for microwave devices such as phase shifters, tunable matching networks, filters, or antennas . It combines outstanding dielectric characteristics such as a strong field‐dependent permittivity (e.g., tunability) and an adequate dielectric loss.…”

Section: Introductionmentioning

confidence: 99%

Effects of ZnO–B₂O₃ Addition on the Microstructure and Microwave Properties of Low‐Temperature Sintered Barium Strontium Titanate (BST) Thick Films

Köhler

Friederich

Sazegar

et al. 2013

Int J Applied Ceramic Tech

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composite thick films have been investigated regarding their suitability as low-temperature sintered tunable microwave dielectrics. The investigations showed that already a small amount of ZnO-B 2 O 3 additive can remarkably reduce the sintering temperature down to 900°C. Microstructural investigations of the thick films revealed the formation of an amorphous intergranular phase and a clustering of particles for high additive amounts. The microwave characterization showed a reduction in relative permittivity, dielectric loss, and tunability of the thick films with increasing additive content. These results demonstrate the potential to tailor the material abilities by varying the additive content.

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“…The requirements of external dc biasing circuitry for these diodes/mechanical switches not only complicated the design but could also be a drawback in fully printing electronics design applications and for large antenna array systems comprising thousands of phase shifters. A tunable phase shifter based on Inkjetprinted BST material in between the finger spacings of CRLH-TL was widely studied in [12][13][14][15]. In [16], the design of fully printable conformal antennas with polymer/CRLH-TL composite phase shifters was investigated.…”

Section: Introductionmentioning

confidence: 99%

A Composite Right/Left-Handed Phase Shifter-Based Cylindrical Phased Array with Reinforced Particles Responsive to Magneto-Static Fields

et al. 2023

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A conformal cylindrical phased array antenna excited with composite right/left-handed (CRLH) phase shifters is proposed. The phase tuning of the CRLH phase shifter is achieved by embedding novel magneto-static field-responsive micron-sized particles in its structure. It is shown that through the tiny magnet activation of these novel magneto-static particles at appropriate locations along the length of CRLH stub and inter-digital fingers, variable phase shifts are obtained. The proposed particle-based CRLH phase shifter operates in C-band (5–6) GHz with a low insertion loss and phase error. The 1 × 4 cylindrical phased array is excited with the four unit cells of the proposed particle-embedded CRLH transmission line phase shifters to scan the main beam at desired scan angles. A prototype of a 1 × 4 cylindrical phased array excited with the particle-based CRLH phase shifters was fabricated, and the results show that the simulated results are in close agreement with the measured results. The conformal cylindrical array with the proposed particle-based CRLH phase shifters has great potential for use in printed and flexible electronics design where commercially available phase shifters have a definite drawback.

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Compact left handed coplanar strip line phase shifter on screen printed BST

Cited by 10 publications

References 14 publications

Fully Screen‐Printed Tunable Microwave Components Based on Optimized Barium Strontium Titanate Thick Films

Fully Screen‐Printed Tunable Microwave Components Based on Optimized Barium Strontium Titanate Thick Films

Effects of ZnO–B₂O₃ Addition on the Microstructure and Microwave Properties of Low‐Temperature Sintered Barium Strontium Titanate (BST) Thick Films

A Composite Right/Left-Handed Phase Shifter-Based Cylindrical Phased Array with Reinforced Particles Responsive to Magneto-Static Fields

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Compact left handed coplanar strip line phase shifter on screen printed BST

Cited by 10 publications

References 14 publications

Fully Screen‐Printed Tunable Microwave Components Based on Optimized Barium Strontium Titanate Thick Films

Fully Screen‐Printed Tunable Microwave Components Based on Optimized Barium Strontium Titanate Thick Films

Effects of ZnO–B2O3 Addition on the Microstructure and Microwave Properties of Low‐Temperature Sintered Barium Strontium Titanate (BST) Thick Films

A Composite Right/Left-Handed Phase Shifter-Based Cylindrical Phased Array with Reinforced Particles Responsive to Magneto-Static Fields

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Product

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Effects of ZnO–B₂O₃ Addition on the Microstructure and Microwave Properties of Low‐Temperature Sintered Barium Strontium Titanate (BST) Thick Films