濾波器在微波通信頻段，如雷達和信號處理系統，扮演一個重要角色的應用。傳統上,這樣的濾波器被以波導管技術、微帶線，分散或集總元件來實現。然而，由於改善在單晶微波積體電路(MMIC) 加工技術， 與被動濾波器比較，主動式濾波器是有利在小尺寸、相容性與其它ICs 和通帶低損失的設計。
這份論文將於高頻主動帶通濾波器設計使用負電阻補償技術;本論文提出設計微波主動巴特沃斯帶通濾波器方法，中心頻率2.44 GHz，通帶寬83.5 GHz，在通帶寬插入損失在0 dB 附近。
除此之外，且將談論關於怎樣實現主動帶通濾波器使用負電阻補償技術，主動帶通濾波器將被製造和驗證其電路的表現。論文將提出包括設計流程，提供負電阻特性以及主動式電感電路的模擬，為了補償通帶插入損失。
濾波器設計符合於Bluetooth 無線通訊標準和製造於PCB 上。量測結果顯示與理想的通帶效能附近相當接近和展示這個設計流程的可行性。
我們將測量主動帶通濾波器的S參數和理論設計方法的有效性。

Filters in microwave frequency play an important role in wide application in communication, radar and signal processing systems.　Traditionally, such filters have been implemented as passive networks of waveguide, transmission line, or discrete lumped elements.　However, due to the improvement in monolithic microwave integrated circuit (MMIC) process technology, compared to the passive filter, the active filter is advantageous in small size, compatibility with other ICs and low loss in narrow bandwidth designs.
This thesis will focus on the high frequency and narrow bandwidth active filter designs using negative resistance compensation technique; It propose a design method to implement a microwave active Butterworth band-pass filter, at center frequency 2.44 GHz, bandwidth 83.5 MHz, in band Insertion loss near 0 dB.
Besides this, we will also discuss about how to implement active band-pass filter using negative resistance compensation technique, as tradition passive filter. The active band-pass filter will be fabricated and to verify the performance of the RF active Butterworth band-pass filter.
The Thesis presented here includes the design flow, simulation of active inductor that provides the negative resistance feature, in order to compensate the pass band transmission loss.
The filter design for the Bluetooth wireless standard and fabricated on a PCB. Measured results of the fabricated filter show near ideal band-pass response and demonstrate the potential for this technique.
We will measure the S-Parameter of the active filters and compare with the theoretical values to demonstrate the validity of the design method.

[1] J. M. Kulyk, “A Monolithic CMOS Transformer Based Q- Enhanced Series-C Coupled Resonator Band-pass Filter,” THE UNIVERSITY OF CALGARY,January,2006.
[2] K.H. LIANG, Chien-Chih HO, Chin-Wei KUO, Yi-Jen CHAN, “CMOS RF Band-pass Filter Design Using the High Quality Active Inductor,” IEICE TRANS,ELECTRON.,VOL.E88-C,NO.12 DECEMBER 2005.
[3] Y.Z. heng and C.E. Saavedra, “Ultra-compact MMIC active band pass filter with tuning range,” ELECTRONICS LETTERS 13th arch 2008 Vol.44 No.6.
[4] B. Hopf , I. Wolff , FELLOW, IEEE and M. Guglielmi, ‘‘Coplanar MMIC Active Bandpass Filters Using Negative Resistance Circuits,’’ IEEE 1994 Microwave and Millimeter-Wave Monolithic Circuits Symposium.
[5] Arthur B. Williams, “Electronic Filter Design Handbook,” McGraw-Hill Book Company. PP. 5-19~5-22
[6] J.S. Hong, M. J. Lancaster, “Microstrip Filters for RF/Micro-wave Applications,” John Wiley&Sons, Inc., 2001.
[7] D. M. Pozar, “Microwave Engineering,” 3 ed, John Wiley & Sons Inc., 1998.
[8]G. L.Matthaei, L. Young, and E. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures. Norwood, MA: Artech House, 1980.
[9] Jae-Ryong Lee, Young-Hoon Chun and Sang-Won Yun, “A Novel Band pass Filter Using Active Capacitance,” 2003 IEEE MIT-S Digest.
[10]Y.H. Chun, J.R. Lee, S.W.ang-Won, and Jin-Koo Rhee, “Design of an RF Low-Noise Band pass Filter Using Active Capacitance Circuit,”IEEE Transactions on Microwave Theory and Techniques,Vol.53,No. 2, February 2005.
[11] Eric C. Krantz and G. R. Branner, “ Active Microwave Filters with Noise Performance Considerations ,” IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 42, NO. I, JULY 1994
[12] M. R. Moazzam and A. H. Aghvami, “Design concepts of a novel microwave active filter,” Int. J. Microwave MiNimeter- Wave CAE, vol. 2, pp. 28-33, Jan. 1992.
[13] S. B. Cohn, “Direct-coupled resonator filters,” Proc. IRE, vol. 45, pp. 187-196, Feb. 1957.
[14] W. B. Kuhn, N. K. Yanduru, and A. S. Wyszynski, “Q-enhanced LC band-pass filters for integrated wireless applications,” IEEE Trans. Microwave Theory Tech., vol. 46, no. 12, pp. 2577–2586, Dec. 1998.
[15] D. Li and Y. P. Tsividis, “Design techniques for automatically tuned integrated gigahertz-range active lc filters,” IEEE J. Solid-State Circuits, vol. 37, no. 8,pp. 967–977, Aug. 2002.
[16] F. D¨ulger, E. S´anchez-Sinencio, and J. Silva-Mart´inez, “A 1.3-V 5-mW fully integrated tunable bandpass filter at 2.1 GHz in 0.35-um CMOS,” IEEE J. Solid-State Circuits, vol. 38, no. 6, pp. 918–928, June 2003.
[17] Risto Kaunisto, “MONOLITHIC ACTIVE RESONATOR FILTERS FOR HIGH FREQUENCIES,” Department of Electrical and Communications Engineering Electronic Circuit Design Laboratory , November 2000.