Liquida-Sky &amp;#x2014; A tunable liquid crystal filter for space applications

Follmann, Rüdiger; Kother, D.; Campo, Marta Arias; Franke, Tobias; Gäbler, A.; Jakoby, Rolf; Manabe, Atsutaka; Rabe, Torsten; Heunisch, Andreas; Rauch, Andrew; Kasser, T.

doi:10.1109/apwc.2013.6624872

Cited by 12 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A compact, low-cost and high-performance microstrip filter composed of interconnected half-wavelength parallel coupled resonators on a denim textile substrate is proposed in [11]. Two compact, low-cost, and multilayer microstrip filters on a liquid crystal polymer (LCP) flexible substrate are proposed in [12], for X-band applications. A flexible polymer substrate…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A novel tunable microwave filter integrated power dividers using liquid crystal

Jiang

Chen

et al. 2015

Micro & Optical Tech Letters

View full text Add to dashboard Cite

A new analytical technique for extraction of HEMT SSM with bias-dependent drain resistance R d directly from measured Sparameters is proposed. For GaN HEMT, R d value varies more than 2.5 times when the gate voltage changes from 24 V to 0 V. For GaAs pHEMT, the drain resistance has a strong dependence on both the drain and gate voltages. The use of biasdependent drain resistance R d in SSM improves the accuracy of small signal S-parameter modeling in the range of DC biases comparing to the extraction techniques with constant drain resistance. REFERENCES

show abstract

Section: Resultsmentioning

confidence: 99%

“…The electric field causes a change in the dielectric constant of the wavelength changes, with respect to a specific wavelength of the resonator. If wavelength changes, the resonant frequency changes [8][9][10][11][12].…”

Section: Power Divider and Filter Designmentioning

confidence: 99%

A novel tunable microwave filter integrated power dividers using liquid crystal

Jiang

Chen

et al. 2015

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…LC based Tunable Filter: Much higher filter qualities can be achieved in LC tuned cavity filters at higher frequencies. The first lab demonstrator of a tunable 3-pole filter is based on a radially coupled cylindrically resonator operating in the TM 010 mode [25], [26]. The core component of the tunable resonators is an LC filled, pillbox-shaped container made of Rexolite.…”

Section: Tunable Filtersmentioning

confidence: 99%

Tunable Microwave Component Technologies for SatCom-Platforms

et al. 2017

View full text Add to dashboard Cite

Modern communication platforms require a huge amount of switched RF component banks especially made of different filters and antennas to cover all operating frequencies and bandwidth for the targeted services and application scenarios. In contrast, reconfigurable devices made of tunable components lead to a considerable reduction in complexity, size, weight, power consumption, and cost. This paper gives an overview of suitable technologies for tunable microwave components especially for SatCom applications. Special attention is given to tunable components based on functional materials such as barium strontium titanate (BST) and liquid crystal (LC).

show abstract

“…We use anisotropic conductive film (ACF) to connect the proposed ROGERS5880 substrate and the metal substrate for package stacking. Then we trickled the nematic liquid crystals into the slot by filling plug, using capillary attraction [7][8][9]. As shown in Figure 3, when the nematic liquid crystals work without bias voltage ( = 0), the long axes of the liquid crystal molecules are parallel to each other and parallel to the ROGERS5880 substrate.…”

Section: Filter Integrated Power Dividers Designmentioning

confidence: 99%

A Novel Microwave Tunable Band-Pass Filter Integrated Power Divider Based on Liquid Crystal

Liu

Jiang

Xia

et al. 2015

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

This paper proposes a novel microwave continuous adjustable band-pass filter integrated power divider based on nematic liquid crystals (LCs). The proposed power divider uses liquid crystal (LC) as the dielectric material. It can realize phase shift by changing the dielectric anisotropy, when biasing the high anisotropy nematic liquid crystal. It is mainly used in microwave frequencies. It has a large number of advantages compared to conventional filter integrated power divider, such as low loss, multifunction integration, continuous adjustable, miniaturization, low processing costs, low operating voltage, high phase shift, and convenient manufacture. Therefore, it has shown great potential for application.

show abstract

Liquida-Sky — A tunable liquid crystal filter for space applications

Cited by 12 publications

References 8 publications

A novel tunable microwave filter integrated power dividers using liquid crystal

A novel tunable microwave filter integrated power dividers using liquid crystal

Tunable Microwave Component Technologies for SatCom-Platforms

A Novel Microwave Tunable Band-Pass Filter Integrated Power Divider Based on Liquid Crystal

Contact Info

Product

Resources

About