Microstrip diplexers design with common resonator sections for compact size, but high isolation

IEEE Transactions on Microwave Theory and Techniques

Volumn 54, Issue 5, 2006, Pages 1945-1952

  Chen, Chi Feng ^a,b   Huang, Ting Yi ^a,b   Chou, Chi Ping ^a,b   Wu, Ruey Beei ^a,b  

^a IEEE   (Taiwan)

^b NATIONAL TAIWAN UNIVERSITY   (Taiwan)

Author keywords

Bandpass filter; Diplexer; Microstrip filter; Stepped impedance resonator (SIR); Transmission zero

Indexed keywords

DIPLEXER; MICROSTRIP FILTERS; STEPPED-IMPEDANCE RESONATOR (SIR); TRANSMISSION ZERO;

BANDPASS FILTERS; ELECTRIC IMPEDANCE; MICROWAVES; NATURAL FREQUENCIES; RESONATORS;

MICROSTRIP DEVICES;

EID: 33646746806     PISSN: 00189480     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMTT.2006.873613     Document Type: Article

References (23)

1. D. M. Pozar, Microwave Engineering, 2nd ed. New York: Wiley, 1998, ch. 8.
2. J. S. Hong and M. J. Lancaster, Microstrip Filter for RF/Microwave Applications. New York: Wiley, 2001, ch. 8.
3. S. B. Cohn, "Parallel coupled transmission-line resonator filters," IRE Trans. Microw. Theory Tech., vol. MTT-6, no. 4, pp. 223-231, Apr. 1958.
4. E. G. Cristal and S. Frankel, "Hairpin-line and hybrid hairpin-line/half-wave parallel-coupled-line filters," IEEE Trans. Microw. Theory Tech., vol. MTT-20, no. 11, pp. 719-728, Nov. 1972.
5. G. L. Matthaei, N. O. Fenzi, R. J. Forse, and S. M. Rohlfing. "Hairpin-comb filters for HTS and other narrowband applications," IEEE Trans. Microw. Theory Tech., vol. 45, no. 8, pp. 1226-1231, Aug. 1997.
6. J. S. Hong and M. J. Lancaster, "Couplings of microstrip square openloop resonators for cross-coupled planar microwave filters." IEEE Trans. Microw. Theory Tech., vol. 44, no. 11, pp. 2099-2109, Nov. 1996.
7. _, "Design of highly selective microstrip bandpass filters with a single pair of attenuation poles at finite frequencies," IEEE Trans. Microw. Theory Tech., vol. 48, no. 7, pp. 1098-1107, Jul. 2000.
8. S. Y. Lee and C. M. Tsai, "New cross-coupled filter design using improved hairpin resonators," IEEE Trans. Microw. Theory Tech., vol. 48, no. 12, pp. 2482-2490, Dec. 2000.
9. J. T. Kuo, M. J. Maa, and P. H. Lu, "A microstrip elliptic function filter with compact miniaturized hairpin resonators," IEEE Trans. Microw. Guided Wave Lett, vol. 10, no. 3, pp. 94-95, Mar. 2000.
10. M. Sagawa, K. Takahashi, and M. Makimoto, "Miniaturized hairpin resonator filters and their application to receiver front-end MIC'," IEEE Trans. Microw. Theory Tech., vol. 37, no. 12, pp. 1991-1997, Dec. 1989.
11. M. Makimoto and S. Yamashita, "Bandpass filters using parallel coupled stripline stepped impedance resonators," IEEE Trans. Microw. Theory Tech., vol. MTT-28, no. 12, pp. 1413-1417, Dec. 1980.
12. M. Sagawa, M. Makimoto, and S. Yamashita, "Geometrical structures and fundamental characteristics of microwave stepped-impedance resonators."IEEE Trans. Microw. Theory Tech., vol. 45, no. 7, pp. 1078-1085, Jul. 1997.
13. S. S. Oh and Y. S. Kim, "A compact duplexer for IMT-2000 handsets using microstrip slow-wave open-loop resonators with high-impedance meander lines," in Radio Wireless Conf., Aug. 2001, pp. 177-180.
14. C. M. Tsai, S. Y. Lee, C. C. Chuang, and C. C. Tsai, "A folded coupledline structure and its application to filter and diplexer design," in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2002, pp. 1927-1930.
15. E. Goron, J.-P. Coupez, C. Person, Y. Toutain, H. Lattard, and F. Perrot, "Accessing to UMTS filtering specifications using new microstrip miniaturized loop-filters," in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2003, pp. 1599-1602.
16. A. F. Sheta, J. P. Coupez, G. Tanne, S. Toutain, and J. P. Blot, "Miniature microstrip stepped impedance resonator bandpass filters and diplexers for mobile communications." in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 1996, pp. 607-610.
17. G. A. Lee, M. Megahed, and F. D. Flaviis, "Design of multilayer spiral inductor resonator filter and diplexer for system-in-a-package," in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2003, pp. 527-530.
18. S. Srisathit, S. Patisang, R. Phromloungsri, S. Bunnjaweht, S. Kosulvit, and M. Chongcheawchamnan, "High isolation and compact size microstrip hairpin diplexer," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 2, pp. 101-103, Feb. 2005.
19. B. Strassner and K. Chang, "Wide-band low-loss high-isolation microstrip periodic-stub diplexer for multiple-frequency applications," IEEE Trans. Microw. Theory Tech., vol. 49, no. 10, pp. 1818-1820, Oct. 2001.
20. Y. Toutain, C. Person, and J. P. Coupez, "Design and implementation of a compact microstrip Tx/Rx diplexer for UMTS equipments," in Proc. Int. MIKON'02 Conf., 2002, pp. 187-190.
21. V. Radisic, Y. Qian, R. Coccioli, and T. Itoh, "Novel 2-D photonic bandgap structure for microstrip lines," IEEE Microw. Guided Wave Lett., vol. 8, no. 2, pp. 69-71, Feb. 1998.
22. L. H. Hsieh and K. Chang, "Equivalent lumped elements G.L.C. and unloaded Q's of closed- and open-loop ring resonators," IEEE Trans. Microw. Theory Tech., vol. 50, no. 2, pp. 453-160, Feb. 2002.
23. C. M. Tsai, S. Y. Lee, and C. C. Tsai, "Performance of a planar filter using a 0° feed structure," IEEE Trans. Microw. Theory Tech., vol. 50, no. 10, pp. 2362-2367, Oct. 2002.