Performance improvements in flexible polymer-based microwave devices

Cherukhin, Iurii; Xin, Guo Yong

doi:10.1109/apmc46564.2019.9038351

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…We will demonstrate in this work that some requirements could be mitigated or varied in order to achieve the optimum balance between microwave performance and mechanical flexibility by implementing suitable production technology and material engineering. The first approach to answer this question has been demonstrated in our previous works [15], [16].…”

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confidence: 99%

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Fully Flexible, Polymer based Microwave Devices Part I: Materials, Fabrication Technique, and Application to Transmission Lines

Cherukhin¹

2021

Preprint

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To achieve fully flexible microwave devices, we investigated flexible polymers in terms of chemical, mechanical, and electrical properties. Moreover, the fabrication techniques for polymer-based microwave devices have been developed to address chemical adhesion and demolding issues. Finally, based on formulated criteria, we have developed recipes for low-loss (0.001), low-Dk (1.73) flexible dielectric materials and applied them to the microstrip and CPW transmission lines. The microstrip and CPW lines' transmission loss is as low as 0.065 and 0.034 dB/cm at 2.5 GHz, respectively. The effects of various materials on microwave performance have been analyzed, from which we show acceptable limits for fully flexible microwave devices in S and L bands. The proposed molding process allows us to step out from 2D PCB designs and build 3D structures or hybrid PCB-3D components with a certain freedom in material properties. Additionally, the new material exhibits unique mechanical properties, which extends the material application to other fields. This work demonstrates that polymer-based flexible microwave electronics can have a competitive performance compared to rigid PCB technology. Additionally, it has been found that the polymer-based devices have significant performance improvements at elevated temperatures, which can be exploited in a high-temperature application.

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confidence: 99%

“…point bending measurement results of CPW lines made from Sylgard 170 and EG3896+50%K20 compound[15].…”

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confidence: 99%

Fully Flexible, Polymer based Microwave Devices Part I: Materials, Fabrication Technique, and Application to Transmission Lines

Cherukhin¹

2021

Preprint

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“…This work shows that some requirements could be eased or varied to achieve the optimal balance between microwave performance and mechanical flexibility. The first approach to answer this question has been demonstrated in our previous works [15], [16].…”

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confidence: 99%

Fully Flexible, Polymer based Microwave Devices Part II: Flexible Antennas and Performance Evaluation

Cherukhin¹

2021

Preprint

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In this work, we have investigated polymer-based flexible antennas from commercial and modified polymers, which are competitive to rigid PCB technology. Classical designs of the patch and bow-tie antennas have been realized and showed that the realized gain can get up to 9.16dBi for the patch and 7.9dBi for the bow-tie antennas. The effects of the dielectric loss and conductivity on the antennas’ performance in S-band have been analyzed in order to find limits for further material engineering and the optimum trade-off between microwave and mechanical performance. The bending effects have been investigated, and it has been found that E-plane bend inside can boost the antenna gain from 8.6dBi to 10.1dBi with the frequency shift from 2.5 GHz to 2.4 GHz for the patch and 7.9dBi to 11.3dBi at 3.1 GHz for the bow-tie antennas. The non-classical π-shaped conductors’ edges lead to additional fringing fields, which have an effect on the antenna’s gain and can be explored and exploited for further performance improvements. The new recipes for low-loss, low-Dk dielectric materials, and chemical integration between conducting

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Investigation of material properties for polymer-based microwave devices

Cherukhin

Zander

Дашкова

et al. 2019

J. Phys.: Conf. Ser.

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This work demonstrates that the molding technique for polymer-based flexible microwave electronics with various polymers in order to evaluate acceptable boundaries for conductivity and tan loss. Performance evaluation has been done on the microstrip line and patch antennas with and without material improvements. We have demonstrated that improvements in conductivity after 106 S/m do not give significant benefits. The attenuation in microstrip lines has been reduced from 0.16dB/cm to 0.05dB/cm. However, reduction in the tan loss is able to boost antenna gain from 4.2dBi to 6.5dBi.

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Performance improvements in flexible polymer-based microwave devices

Cited by 4 publications

References 10 publications

Fully Flexible, Polymer based Microwave Devices Part I: Materials, Fabrication Technique, and Application to Transmission Lines

Fully Flexible, Polymer based Microwave Devices Part I: Materials, Fabrication Technique, and Application to Transmission Lines

Fully Flexible, Polymer based Microwave Devices Part II: Flexible Antennas and Performance Evaluation

Investigation of material properties for polymer-based microwave devices

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