그림 1. 제안한 비대칭 분배기 회로도 Fig. 1. Schematic of proposed unequal power divider.
그림 2. 등가회로 (a) 신호가 포트 1로 입력되었을 때 (b) 신호가 포트 2로 입력되었을 때 Fig. 2. Equivalent circuit (a) when the port 1 excited and (b) when the port 2 excited.
그림 3. 제작된 비대칭 분배기 사진 (a) 1:2 분배 비율 (b) 1:4 분배 비율 Fig. 3. Photograph of fabricated unequal power divider (a) power dividing ratio of 1:2 (b) power dividing ratio of 1:4.
그림 4. 1:2 분배 비율의 비대칭 분배기 특성 (a) |S11|, |S21|, |S31| (b) |S22|, |S33|, |S32| Fig. 4. Characteristics of unequal power divider with 1:2 power dividing ratio (a) |S11|, |S21|, |S31| (b) |S22|, |S33|, |S32|
그림 5. 1:4 분배 비율의 비대칭 분배기 특성 (a) |S11|, |S21|, |S31| (b) |S22|, |S33|, |S32| Fig. 5. Characteristics of unequal power divider with 1:4 power dividing ratio (a) |S11|, |S21|, |S31| (b) |S22|, |S33|, |S32|
참고문헌
- H.-R. Ahn and I. Wolff, "Three port 3 dB power divider terminated by different impedances and its application to MMIC's," IEEE Transaction Microwave Theory & Technology, Vol. 47, No. 6, pp. 786-794, Jun. 1999. https://doi.org/10.1109/22.769351
- H.-R. Ahn and I. Wolff, "General design equations, small sized impedance transformers, and their application to small sized three port 3 dB power dividers," IEEE Transaction Microwave Theory & Technology, Vol. 49, No. 7, pp. 1277-1288, Jul. 2001. https://doi.org/10.1109/22.932248
- J.-S. Lim, C.-S. Kim, Y.-T. Lee, D. Ahn and Nam, "Design of lowpass filters using defected ground structure and compensated microstrip line," Electronics Letters, Vol. 38, No. 22, pp. 1357-1358, Oct. 2002. https://doi.org/10.1049/el:20020889
- J.W. Gipprich, "A new class of branch line directional couplers," in 1993 IEEE MTT-S International Microwave Symposium, Altanta: GA, Jun. 1993.
- A. Arbabi, A. Boutejdar, M. Mahmoudi and A. Omar, "Increase of characteristic impedance of microstrip line using a simple slot in metallic ground plane," in 2006 First International Conference on Communications and Electronics, Hanoi: Vietnam, Oct. 2006.
- K.-K.M. Cheng and P.-W. Li, "A novel power divider design with unequal power dividing ratio and simple layout," IEEE Transaction Microwave Theory & Technology, Vol. 57, No. 6, pp. 1589-1594, Jun. 2009. https://doi.org/10.1109/TMTT.2009.2019997
- P.-W. Li and K.-K.M. Cheng, "A new unequal power divider design with enhanced insertion loss flatness," IEEE Microwave Wireless Component Letters, Vol. 19, No. 12, pp. 786-788, Dec. 2009. https://doi.org/10.1109/LMWC.2009.2033504
-
T. Qi, S. He, Z. Dai and W. Shi, "Novel unequal power divider with
$50{\Omega}$ characteristic impedance lines," IEEE Microwave Wireless Component Letters, Vol. 26, No. 3, pp. 180-182, Mar. 2016. https://doi.org/10.1109/LMWC.2016.2525817 - Y.-Z. Zhu, X.-F. Zhang, X.-F. Wu, C. Li and G.-Y. Fang, "Novel Wilkinson power divider with uniform impedance line," in 2008 Asia-Pacific Microwave Conference, Macau: China, Dec. 2008.