A Study on the Transmission Line in FBAR Duplexer for Industrial Wireless Communication in the Context of Industry 4.0

  • Authors

    • EunKyu Lee
    • Jae Joong Kim
    • Hyung Rim Choi
    • Cheong Hyeok Lim
    • Sang Hoon Cha
    https://doi.org/10.14419/ijet.v7i3.24.22515
  • Transmission line, FBAR, Filter, Duplexer, PCB

  • Background/Objectives: This paper designs and manufactures a transmission line with PCB stacking of 3.8mm x 3.8mm x 1.8mm for the miniaturization of FBAR duplexer.

    Methods/Statistical analysis: To evaluate the performance of the fabricated transmission line, we applied it to a duplexer made up of Tx and Rx filters made of a combination of FBAR resonators and confirmed its characteristics.

    Findings: In this study, a pentagonal resonator was fabricated for each filter size, and Tx and Rx filters were designed after extracting physical properties for each resonator. And we design duplexer using combined Tx/Rx filter. The characteristics of the transmission line were analyzed by using the designed duplexer.

    Improvements/Applications: The line width of the transmission applied to the duplexer was 210㎛ and designed as a strip line having a length of 18mm.It was confirmed that the phase difference was 179.9° at 18mm.A transmission line was applied to a very small FBAR duplexer having a size of 3.8 mm×(length) 3.8 mm×(height) 1.8 mm to be applied (width) to obtain S11 (-5.638 dB), S21 (-18.296 dB), S31 42.832dB).

     

  • References

    1. [1] J.-H. Kim, S.-H. Lee, J.-H. Ahn, and J.-K. Lee, Journal of Ceramic Processing Research 3, 25 (2002).

      [2] R. Ruby, P. Bradley, J. Larson, Y. Oshmyansky, and D. Figueredo, IEEE International Solid-State Circuits Conference (IEEE, Piscataway, NJ, 2001) p. 120.

      [3] H.-S. Park, J. Lee, J. Shin, J. Kwon, S. Sul, D.-H. Kim, K.-J. Shin, M.-K. Gu, and I. Song, 36th European Microwave Conference (IEEE, Manchester, 2006) p. 1281.

      [4] Ó. Menéndez, P. de Paco, R. Villarino, and J. Parrón, IEEE Microwave and Wireless Components Letters 16, 657 (2006).

      [5] Y. H. Chee, A. M. Niknejad, and J. M. Rabaey, IEEE Journal of Solid-State Circuits 41, 1740 (2006).

      [6] T. Yokoyama, T. Nishihara, S. Taniguchi, M. Iwaki, and Y. Satoh, IEEE Ultrasonics Symposium (IEEE, Puerto Rico, 2004) p. 429.

      [7] B. Ha, I. Song, Y.-K. Park, D.-H. Kim, W. Kim, K. Nam, J. Jungho Pak, Novel 1-chip FBAR filter for wireless handsets (Sensors and Actuators A, vol. 130–131, 2006) p. 247.

      [8] C. H. Tai, T. K. Shing, Y. D. Lee, and C. C. Tien, Tamkang Journal of Science and Engineering 7, 67 (2004).

      [9] Bradley, P. et al., “A Film Bulk Acoustic Resonator (FBAR) Duplexer for USPCS Handset Applications,†IEEE MTT-S International on Microwave Symposium, pp. 367-370 (2001).

      [10] Lakin, K. M. et al., “Duplexer Incorporating Thin-Film Bulk Acoustic Resonators (FBARs),†2001 US patent 6262637.

      [11] Ruby, R. et al., “PCS 1900 MHz Duplexer Using Thin Film Bulk Acoustic Resonators (FBARs),†Electronics Letters, pp. 794-795 (1999).

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  • How to Cite

    Lee, E., Joong Kim, J., Rim Choi, H., Hyeok Lim, C., & Hoon Cha, S. (2018). A Study on the Transmission Line in FBAR Duplexer for Industrial Wireless Communication in the Context of Industry 4.0. International Journal of Engineering & Technology, 7(3.24), 93-99. https://doi.org/10.14419/ijet.v7i3.24.22515