volume | PIER Journals

Abstract

A transformer that uses bonder-wires and printed circuit board (PCB) patterns is proposed for RF circuit applications. The proposed transformer can be constructed without any additional processes. The PCB patterns are implemented using a typical FR4 substrate and gold bonder wires are used. The self-inductance of the transformer can be controlled according to the number of unit-transformers. Although the size of the transformer is larger than that of a fully-integrated transformer, the maximum available gain (MAG) is almost identical to that of other-types of transformers, which require additional cost or bulky size to obtain sufficient inductance. Additionally, we proposed a method to design the transformer with a symmetric structure for differential RF CMOS circuit applications. The transformer can applied to GHz-order RF CMOS circuits as an input and output matching component with low loss characteristics.

1. Zhurbenko, , V. and K. Kim, "Nonsynchronous noncommensurate impedance transformers," Progress In Electromagnetics Research B, Vol. 42, 405-424, 2012.
doi: --- Either ISSN or Journal title must be supplied.

2. Zheng, , X., Y. Liu, S. Li, C. Yu, Z. Wang, and J. Li, , "A dual-band impedance transformer using pi-section structure for frequency-dependent complex loads," Progress In Electromagnetics Research C, Vol. 32, 11-26, , 2012.

3. Resley, , L., H. Song, and , "Ka-band klopfenstein tapered impedance transformer for radar applications," Progress In Electromagnetics Research C, Vol. 27, 253-263, 2012.
doi:10.2528/PIERC11112310

4. Li, , S., B. Tang, Y. Liu, S. Li, C. Yu, and Y. Wu, "Miniaturized dual-band matching technique based on coupled-line transformer for dual-band power ampliers design ," Progress In Electromagnetics Research, Vol. 131, 195-210, 2012.

5. Wu, S.-M., C.-T. Kuo, and C.-H. Chen, "Very compact full differential bandpass filter with transformer integrated using integrated passive device technology," Progress In Electromagnetics Research, Vol. 113, 251-267, 2011.

6. Shamaileh, , K. A. A., A. M. Qaroot, and N. I. Dib, "Non-uniform transmission line transformers and their application in the design of compact multi-band bagley power dividers with harmonics suppression," Progress In Electromagnetics Research, Vol. 113, 269-284, 2011.

7. Zhang, , B., Y.-Z. Xiong, L. Wang, S. Hu, and L.-W. Li, "3D transformer design by through silicon via technology and its application for circuit design," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 17--18, 2513-2521, January 2011.
doi:10.1163/156939311798806112

8. Wang, , S., Z.-K. Li, and , "A 7.9--12.1-GHz CMOS LNA employing noise-suppressed and gain-flattened techniques," Journal of Electromagnetic Waves and Applications, Vol. 26, No. 14--15, 1993-2000, , October 2012.
doi:10.1080/09205071.2012.724154

9. Lee, , C., J. Park, and C. Park, , "X-band CMOS power amplifier using mode-locking method for sensor applications," Journal of Electromagnetic Waves and Applications, Vol. 26, No. 5--6, 633-604, 2012.
doi:10.1080/09205071.2012.710783

10. Seo, , D., C. Lee, J. Park, and C. Park, "Power detection method using a virtual ground node for RF CMOS power amplifier applications," Journal of Electromagnetic Waves and Applications, Vol. 26, No. 17--18, 2341-2347, 2012.
doi:10.1080/09205071.2012.734033

11. Park, , J., C. Lee, and C. Park, "A brief review: Stage- convertible power amplifier using differential line inductor," Wireless Engineering and Technology, Vol. 3, No. 4, 189-194, October 2012.
doi:10.4236/wet.2012.34027

12. Wong, , S.-K., F. Kung, S. Maisurah, and M. N. B. Osman, "A wimedia compliant CMOS RF power amplifier for ultra-wideband (UWB) transmitter," Progress In Electromagnetics Research , Vol. 112, 329-347, 2011.

13. Wang, , S., R.-X. Wang, and , "A tunable bandpass filter using Q-enhanced and semi-passive inductors at S-band in 0.18-mu M CMOS," Progress In Electromagnetics Research B, Vol. 28, 55-73, 2011.

14. Chien, , W.-C., C.-M. Lin, Y.-H. Chang, and Y.-H. Wang, "A 9{21 GHz miniature monolithic image reject mixer in 0.18-mu M CMOS technology," Progress In Electromagnetics Research Letters, Vol. 17, 105-114, 2010.
doi:10.2528/PIERL10072602

15. Park, , C., Y. Kim, H. Kim, and S. Hong, "A 1.9-GHz CMOS power ampli¯er using three-port asymmetric transmission line transformer for a polar transmitter," IEEE Trans. Microwave Theory and Tech., Vol. 55, No. 2, 230-238, February 2007.
doi:10.1109/TMTT.2006.889152

16. Park, , C., D. H. Lee, J. Han, and S. Hong, "Tournament-shaped magnetically coupled power-combiner architecture for RF CMOS power amplifier," IEEE Trans. Microwave Theory and Tech., Vol. 55, No. 10, 2034-2042, , October 2007.
doi:10.1109/TMTT.2007.905482

17. Kang, , W., H. Wang, C. Miao, C. Tan, and W. Wu, "A high performance balun bandpass FIlter with very simple structure ," Progress In Electromagnetics Research Letters, Vol. 31, , 169-176, 2012.
doi:10.2528/PIERL12030406

18. Park, , C., J. Han, H. Kim, and S. Hong, "A 1.8-GHz CMOS power ampli¯er using a dual-primary transformer with improved e±ciency in the low power region ," IEEE Trans. Microwave Theory and Tech., Vol. 56, No. 4, 782-792, April 2008.
doi:10.1109/TMTT.2008.918152

19. Jang, J., C. Park, H. Kim, and S. Hong, "A CMOS RF power ampli¯er using an off-chip transmission line transformer with 62% PAE," IEEE Microwave and Wireless Components Letters, Vol. 17, No. 5, 385-387, May 2007.
doi:10.1109/LMWC.2007.895723

20. Park, , C., C. Seo, and , "A 1.8-GHz CMOS class-E power amplifier with an integrated passive transformer," IET Circuits, Devices & Systems, Vol. 4, No. 6, 479-485, , November 2010.
doi:10.1049/iet-cds.2010.0014

21. Lee, , H., C. Park, and S. Hong, "A quasi-four-pair class-E CMOS RF power amplifier with an integrated passive device transformer," IEEE Trans. Microwave Theory and Tech., Vol. 57, No. 4, 752-759, April 2009.
doi:10.1109/TMTT.2009.2015122

Dr. Byungjoo Kang

Dr. Hoyong Hwang

Dr. Changkun Park