© The Institution of Engineering and Technology
A novel multilayer diplexer with low insertion loss and high selectivity for long-term evolution (LTE) application is proposed through the combination of two quasi-lumped element filters. Based on the equivalent circuit of the diplexer, the locations of the transmission zeros can be adjusted separately by changing the component value of each channel, thus high isolation level and wide stopband can be achieved simultaneously. Furthermore, the diplexer has an extremely compact size of 1.6 mm × 0.8 mm × 0.5 mm by using low temperature co-fired ceramic (LTCC) multilayer technology.
References
-
-
1)
-
5. Xiao, J.K., Zhang, M., Ma, J.G.: ‘High selective microstrip bandpass filter and diplexer with common magnetic coupling’, Electron. Lett., 2018, 54, (25), pp. 1438–1440 (doi: 10.1049/el.2018.6903).
-
2)
-
5. Lu, X., Guo, X., Cao, B., Wei, B., Zhang, X.: ‘Wideband superconducting diplexer with stepped-impedance cross-structure’, Electron. Lett., 2014, 50, (18), pp. 1324–1326 (doi: 10.1049/el.2014.1406).
-
3)
-
1. Ignacio, L.G., Mira, F., Zheng, P., et al: ‘All-resonator based LTCC diplexer using substrate-integrated-waveguides’, Electron. Lett., 2017, 53, (21), pp. 1410–1412 (doi: 10.1049/el.2017.3029).
-
4)
-
4. Li, X.T., Cheng, F., Lu, P., et al: ‘High isolation diplexer using stub-loaded resonators’, Electron. Lett., 2019, 55, (14), pp. 800–801 (doi: 10.1049/el.2019.1201).
-
5)
-
1. Cheng, F., Lin, X.Q., Zhu, Z.B., et al: ‘High isolation diplexer using quarter-wavelength resonator filter’, Electron. Lett., 2012, 48, (6), pp. 330–331 (doi: 10.1049/el.2012.0031).
-
6)
-
3. Yan, J.M., Cao, L.M., Zhou, H.Y.: ‘Compact diplexer using microstrip half- and quarter-wavelength resonators’, Electron. Lett., 2016, 52, (19), pp. 1613–1615 (doi: 10.1049/el.2016.2127).
-
7)
-
6. Guan, X., Yang, F., Liu, H., et al: ‘Compact and high-isolation diplexer using dual-mode stub-loaded resonator’, IEEE Microw. Wirel. Compon. Lett., 2014, 24, (6), pp. 385–387 (doi: 10.1109/LMWC.2014.2313591).
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