Figure 1. Even and odd-mode configuration of the CCL
Figure 2. Characteristics of loss of the CCL as the coupling coefficient and impedance
Figure 3. Characteristics of phase of the CCL as the electrical length
Figure 4. Photograph of fabricated the rat-race ring using the CCL
Figure 5. Simulated and measured results of the rat-race ring using the CCL
Figure 6. Measured results of differenced magnitude and phase of the rat-race ring
참고문헌
- E. M. T. Jones and J. T. Bolljahn, "Coupled Strip Transmission Line Filters and Directional Couplers," IRE Trans. on Microwave Theory Tech. Vol. 4, No.2, pp. 75-81, Apr. 1956. DOI: 10.1109/TMTT.1956.1125022
- K. H. Um, "Derivation of Transfer Function for the Cross-Coupled Filter Systems Using Chain Matrices," Int. J. Advanced Smart Convergence (IJASC), Vol. 7, No. 1, pp. 7-14, Mar. 2018. DOI: https://dx.doi.org/10.7236/IJASC.2018.7.1.2
- J. J. Hwang and J. Moon, "Inductive Sensor and Target Board Design for Accurate Rotation Angle Detection," Int. J. Internet, Broadcasting, and Communication (IJIBC), Vol. 9, No. 1, pp. 64-71, Feb. 2017. DOI: https://doi.org/10.7236/IJIBC.2017.9.1.64
- T. Yun, "Compact Branch-line Power Divider Using Connected Coupled-line Structure," Int. J. Internet, Broadcasting, and Communication (IJIBC), Vol. 10, No. 3, pp. 109-114, June 2018. DOI: https://doi.org/10.7236/IJIBC.2018.10.3.109
- H. Xu, G. Wang, X. Zhang, and X. Yang, "Novel Compact Dual-band Rat-race Coupler Combining Fractal Geometry and CRLH TLs," Wireless Pers Commun., Vol. 66, pp. 855-864, Oct. 2011. DOI: 10.1007/s 11277-011-0411-7
- K. Choi, K. Yoon, J. Lee, C. Lee, S. Kim, K. Kim, and J. Lee, "Compact Branch-line Coupler with Harmonics Suppression Using Meander T-shaped line," Microwave and Optical Tech. Lett., Vol. 56, No. 6, pp. 1382-1384, June 2014. DOI: https://doi.org/10.1002/mop.28331