多通帶微型化濾波器之研發

濾波器是無線通訊系統構裝技術中最重要的被動元件之一。由於攜帶方便性的考量，無線通信應用的尺寸也要求越來越小，而所有的元組件也將朝著微小化發展。隨著通訊技術的成熟，各式的應用也隨之蓬勃發展。可以同時使用再多種應用或是多個頻段的元件也隨之受到注目。於是乎我們著手研究濾波器微型化、多通帶、以及高諧波抑制率的關鍵技術，並提出了多種嶄新設計概念，利用步階阻抗共振器((SIR)可以自由改變基頻共振頻率以及高次諧波共振頻率的特點，再利用摺疊的方式來微小化共振器的尺吋，同時以交互串接共振器的方法來達到多通帶又可免除不必要的阻抗匹配電路而達到微小化的目的。研究成果皆已經由實驗證實，並且刊登在IEEE Trans. MTT的一系列文章裡面。

根據上述前瞻的研究成果，研究團隊進ㄧ步將所得的經驗移植到多層低溫共燒陶瓷(LTCC)的應用中。圖1.1顯示一個使用多層LTCC 技術的四階準橢圓函數的波導管帶通濾波器，利用垂直堆疊共振器的方法可以達到波導管共振器微型化的目標，同時也提出了幾種在堆疊過程可以利用的新型態耦合機制，使垂直堆疊可以更緊密更有效。如圖8.1(c)中模擬與實驗結果所示，利用垂直堆疊共振器所設計之帶通濾波器確實擁有更小的電路面積與很好的頻率選擇度。透過垂直堆疊的交互耦合機制，整體的電路面積縮小約65%。

 

圖1.1  多層LTCC垂直堆疊四階準橢圓函數的波導管帶通濾波器

(a)濾波器的結構圖，(b)測試圖，以及(c)模擬與實驗結果

 

三、研究成果

1、提出了一種新的結合微帶線以及共面波導的傳輸媒介。此傳輸媒介可應用來製作小形化的超寬頻濾波器。此濾波器可以有很小的尺寸、很好的置入損耗。

2、提出一種新的共振腔架構，此共振腔使用雙金屬平面再加上金屬區塊、貫孔、以及螺旋電感的組合。由此共振腔所實現的濾波器可同時縮小濾波器面積以及在想要的頻率加上傳輸零點。

3、一種新的共面波導饋入的天線陣列。此天線陣列使用串聯式饋入每個槽形天線。應用此架構可以達到高的增益以及更尖銳的H-平面的場形。

4、製做出一個共面波導饋入的平面具有對數重覆性的槽形天線。此槽形天線的應用頻率是在超寬頻通訊系統的使用頻帶。由於此特殊的架構，此天線在3.1 到10.6 GHz 的頻率範圍中，都有穩定的輸入阻抗以及輻射場形。

5、成功地製作出一個40GHz 的除頻器以及63 GHz 的CMOS 壓控盪器。這些高頻電路只需要使用較低階的0.18-μm 技術就可以實現。本成功已經成功地發表在2007年的國際固態電路研討會(ISSCC)中。

6、完成了一個使用CMOS 90nm 製程製作的單刀雙執微波切換器，此切換器在80 GHz 的頻率中還能擁有3 dB左右的低損耗。此微波切換器的特性已經逐漸趕上目前由GaAs PHEMT 製作的微波切換器。

7、提出一種新的電路架構，叫做環形耦合器。此環形耦器是針對高頻振盪器(特別是在毫米波的範圍)而設計。應用此環形耦器器，可以設計出基頻在90 GHz 的CMOS 90nm振盪器。此振盪器可達到-20 dBm 的功率輸出以及 2.5 GHz 的頻率範圍。

8、實現了一個小形的25 – 75 GHz 的雙平衡式的吉伯特混波器。此吉伯特混波器使用90 nm CMOS 的製程製作。除了面積小省空間外，此混波器還是全世界最高頻率的吉伯特混波器。

9、製作一個Q 頻帶的平衡式中功率放大器。此放大器同樣使用90nm的CMOS製程設計。此放大器有很寬的頻寬以及精巧的尺寸 0.78 × 0.92 (釐米平方)　。

10、在整合系統晶片之射頻系統構裝方面，如圖8.2所示，使用0.18微米互補式金氧半電晶體技術(CMOS)完成一先進X頻段單脈衝FMCW 雷達收發機。收發機在10.5GHz的輸出功率有-18.2dBm，雜訊指數小於10dB，收射端與接收端之間的隔離度大於55dB。

                    (a)                                                             (b)           

圖1.2.  0.18微米CMOS X頻段單脈衝FMCW雷達收發機之

(a)系統架構與 (b)晶片照片

11、在晶片系統構裝方面，實現了一種三維垂直堆疊可程式邏輯陣列(FPGA)。與傳統的二維可程式邏輯陣列相比，在65nm製程技術實現之三維垂直堆疊可程式邏輯陣列的總邏輯閘密度提高約3.2倍，低速度的路徑時間延遲減少約1.7倍，總體動態操作功耗也減少約1.7倍。

                (a)                                                                                   (b)               

圖1.3  (a)三維垂直堆疊可程式邏輯陣列架構的示意圖

(b)使用65nm製程技術實現之三維垂直堆疊可程式邏輯陣列的模擬路徑時間延遲

12、在晶片及構裝整合天線方面，完成一種新式的小型UWB(3.1-10.6 GHz)開孔天線，並提出三種止帶抑制的設計方法來達成抑制現有WLAN (IEEE802.11a和HIPERLAN/2) 在5.15-5.825GHz的訊號干擾。從模擬與實驗結果可以證實所提出的方法確實可以達到止帶抑制的效果。

圖1.4  (a)新式的小型UWB開孔天線之三種止帶抑制的設計方法示意圖

以及(b)模擬與實驗結果

13、在整合系統晶片之射頻系統構裝系統構裝方面，基於一種新提出之互補式導體傳輸線(complementary- conducting-strip transmission line, CCS TL)，提出一種新式隔離電磁耦合的方法，可以有效的降低CMOS電路之間因電磁波造成的相互耦合。如圖1.5(b)，將此方法應用在電感耦合的測試中。從模擬與實驗結果可以證明，一對距離約250微米加了，新的隔離方法的電感，其相互間耦合量比未加隔離的電感在0.2 GHz 到 20 GHz的範圍內，小了40dB。

圖1.5  (a)二維互補式導體傳輸線的架構圖 (b)對應用新的隔離方法的螺旋電感

以及(c)模擬與實驗電磁耦合量

14、在系統構裝的電磁相容設計方面，利用新提出的光學晶格式的電源/接地層結構，完成一種在系統構裝上可以有效抑制電路接地雜訊以及同步切換雜訊的方法。實驗結果顯示在低於10GHz範圍內有4GHz頻寬的止帶抑制效果高達60dB。在時域上，接地雜訊的抑制效果高達90%以上。

圖1.6 (a)新式光學晶格式的電源/接地層結構以及

(b)雜訊抑制效果的模擬和實驗結果

15、在矽基傳輸線特性分析方面，提出一種快速簡單的演算法，可以直接利用雙埠網路分析儀以及幾種未知的校準元件，量測多埠電路的S參數。提出的新方法可以很容易的利用Matlab數學軟體加以實現。圖1.7(b) 利用一個在FR4印刷電路板實現的90度耦合器來驗證提出之演算法。從量測結果可以看出與實際利用多埠網路分析儀量測得到之結果相當吻合。

圖1.7  (a)三種多埠網路校準法的校準器以及 (b)90度耦合器的量測與模擬結果

四、重要論文

期刊論文

ÿ    S. C. Lin, C. H. Wang, and C. H. Chen, “Novel patch-via-spiral resonators for the development of miniaturized bandpass filters with transmission zeros,“ IEEE Trans. on Microwave Theory and Techniques, Vol. MTT-55, No. 1, pp. 137-146, January 2007.

ÿ    C. H. Wu, C. H. Wang, and  C. H. Chen, “Novel balanced coupled-line bandpass filters with common-mode noise suppression, “ IEEE Trans. on Microwave Theory and Techniques, Vol.  MTT-55, No.  2, pp. 287-295, February 2007.

ÿ    C. H. Wang, P. H. Deng, and C. H. Chen, Coplanar-waveguide-fed microstrip bandpass filters with capacitively broadside-coupled structures for multiple spurious suppression, IEEE Trans. on Microwave Theory and Techniques, Vol. MTT-55, No. 4, pp. 768-775, April 2007.

ÿ    C.-R. Wu, H.-H. Hsieh and L.-H. Lu, “An ultra-wideband distributed active mixer MMIC in 0.18-mm CMOS technology,” IEEE Transactions on Microwave Theory and Techniques, Apr. 2007.

ÿ    H.-H. Hsieh, Y.-C. Hsu and L.-H. Lu, “A 15/30-GHz dual-band multi-phase voltage-controlled oscillator in 0.18-mm CMOS,” IEEE Transactions on Microwave Theory and Techniques, vol. 55, no. 3, pp. 474-483, Mar. 2007.

ÿ    H.-H. Hsieh and L.-H. Lu, “A high-performance CMOS voltage-controlled oscillator for ultra-low-voltage operations,” IEEE Transactions on Microwave Theory and Techniques, vol. 55, no. 3, pp. 467-473, Mar. 2007.

ÿ    Y.-H. Peng and L.-H. Lu, “A 16-GHz triple-modulus phase-switching prescaler and its application to a 15-GHz frequency synthesizer in 0.18-mm CMOS,” IEEE Transactions on Microwave Theory and Techniques, vol. 55, no. 1, pp. 44-51, Jan. 2007.

ÿ    J.-C. Chien and L.-H. Lu, “A 20-Gb/s 1:2 Demultiplexer with capacitive-splitting current-mode-logic latches,” IEEE Transactions on Microwave Theory and Techniques, Aug. 2007.

ÿ    H.-H. Hsieh and L.-H. Lu, “Design of ultra-low-voltage RF frontends with complementary current-reused architectures,” IEEE Transactions on Microwave Theory and Techniques, vol. 55, no. 7, pp. 1445-1458, Jul. 2007.

ÿ    H.-H. Hsieh, Y.-T. Liao and L.-H. Lu, “A compact quadrature hybrid MMIC using CMOS active inductors,” IEEE Transactions on Microwave Theory and Techniques, vol. 55, no. 6, pp. 1098-1104, Jun. 2007.

ÿ    C. H. Wu, C. H. Wang, and C. H. Chen, “Balanced coupled-resonator bandpass filters using multi-section resonators for common-mode suppression and stopband extension,” IEEE Trans. on Microwave Theory and Techniques, vol. MTT-55, No. 8, pp. 1756-1763, August 2007.

ÿ    Chin-Shen Lin, Pei-Si Wu, Mei-Chao Yeh, Jia-Shiang Fu, Hong-Yeh Chang, Kun-You Lin, and Huei Wang, "Analysis of multi-conductor coupled-line Marchand baluns for miniature MMIC design,” IEEE Trans. on Microwave Theory and Tech., vol. 55, no. 6, pp. 1190-1199, June 2007.

ÿ    Zuo-Min Tsai, Yu-Sian Jiang, Jeffery Lee, Kun-You Lin, and Huei Wang, "Analysis and design of band-pass single pole-double-throw FET filter-integrated switches,” IEEE Trans. on Microwave Theory and Tech., vol. 55, no. 8, pp. 1601-1610, Aug. 2007.

ÿ    Y.J.Hwang, R.Rao, R.Christensen, M.T.Chen, and T.H.Chu, “Submillimeter-wave phasor beam-pattern measurement based on two-stage heterodyne mixing with unitary harmonic difference”, IEEE Transactions on Microwave Theory and Techniques, vol.MTT-55, no.6, pp.1200-1207, June 2007.

ÿ    H.-Y. Huang, J.-C. Chien and L.-H. Lu, “A 10-Gb/s inductorless CMOS limiting amplifier with third-order interleaving active feedback,” IEEE Journal of Solid-State Circuits, May 2007.

ÿ    Pin-Chen Huang, Ming-Da Tsai, Huei Wang, Geroge D. Vendelin, Chun-Hung Chen, and Chih-Shen Chang, “A low power 114-GHz push-push CMOS VCO using LC source degeneration,” IEEE Journal of Solid State Circuits, vol. 42, no. 6, pp. 1230-1239, June 2007.

ÿ    Shih-Yuan Chen, I-Ching Lan, and Powen Hsu, “In-line series-feed collinear slot array fed by a coplanar waveguide,” IEEE Trans. Antennas Propagat., Jun. 2007.

ÿ    Shih-Yuan Chen, I-Ching Lan, and Powen Hsu, “In-line series-feed collinear slot array fed by a coplanar waveguide,” IEEE Trans. Antennas Propagat., vol. 55, no. 6, pp. 1739-1744, Jun. 2007.

ÿ    Chi-Hsueh Wang, Hong-Yeh Chang, Pei-Si Wu, Kun-You Lin, Tian-Wei Huang, Huei Wang, and Chun Hsiung Chen, “A 60GHz low-power six-port transceiver for gigabit software-defined transceiver applications,“ 2007 International Solid-State Circuits Conference (ISSCC), pp. 192-193, USA, Feb. 2007.

ÿ    J.-C. Chien and L.-H. Lu, “40GHz wide-locking-range regenerative frequency divider and low-phase-noise balanced VCO in 0.18mm CMOS,” IEEE International Solid-State Circuits Conference (ISSCC 2007), pp. 544-545, Feb. 2007.

ÿ    J.-C. Chien and L.-H. Lu, “40Gb/s high-gain distributed amplifiers with cascaded gain stages in 0.18mm CMOS,” IEEE International Solid-State Circuits Conference (ISSCC 2007), pp. 538-539, Feb. 2007.

ÿ    Tang-Nian Luo, Shuen-Yin Bai, and Yi-Jan Emery Chen, “A 44 GHz 0.18μm CMOS superharmonic frequency divider,” in IEEE MTT-S Int. Microwave Symp. Dig., June 2007.

ÿ    Parag Upadhyaya, Deukhyoun Heo, David M. Rector, and Yi-Jan Emery Chen, “A 1.1V low phase noise CMOS quadrature LC VCO with 4-Way center-tapped inductor,” in IEEE MTT-S Int. Microwave Symp. Dig., June 2007.

ÿ    Jeng-Han Tsai, Yi-Lin Lee, Tian-Wei Huang, Cheng-Ming Yu, and John G. J. Chern, "A 90-nm CMOS broadband and miniature Q-band balanced medium power amplifier," accepted by IEEE MTT-S Int. Microwave Symp., June 2007.

ÿ    Jeng-Han Tsai, and Tian-Wei Huang, "A miniature 38-48 GHz MMIC sub-harmonic transmitter with post-distortion linearization," accepted by IEEE MTT-S Int. Microwave Symp. Digest, June 2007.

ÿ    Ruey-Beei Wu, Huei Wang, Shi-Jong Chung, Chung-Hsin Lu, and Chun-Hsuing Chen “Microwave activities in Taiwan,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    Kuo-Jung Sun, Zuo-Min Tsai, Kun-You Lin, and Huei Wang, “A 10.8-GHz CMOS low-noise amplifier using parallel-resonant inductor,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    Hong-Yeh Chang, Huei Wang, and Wesley Lin, “A miniature 35-110 GHz modified reflection-type BPSK modulator using 65-nm CMOS technology,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    To-Po Wang and Huei Wang, “A broadband 42-63-GHz amplifier using 0.13-mm CMOS technology,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    Zuo-Min Tsai, Ming-Fong Lei, and Huei Wang, “An HBT 4-Cell monolithic stacked power amplifier,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    Chin-Shen Lin, Hong-Yeh Chang, Pei-Si Wu, Kun-You Lin, and Huei Wang, “A 35-50 GHz IQ-demodulator in 0.13-mm CMOS technology,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    Shi-Fong, Che-Chung Kuo, Zuo-Min Tsai, and Huei Wang, “A 40-GHz MMIC SPDT bandpass filter integrated switch,” 2007 IEEE MTT-S International Microwave Symposium Digest, Honolulu, HI, USA, June 2007.

ÿ    Pin-Cheng Huang, Fong-Cheng Chang, Shi-Fong, and Huei Wang, “A miniature folded-switching upconversion mixer for UWB applications using 0.18-mm CMOS process,” 2007 IEEE IEEE RFIC Symposium Digest,Honolulu,HI, USA, June 2007.

ÿ      W.-D. Guo, G.-H. Shiue, C.-M. Lin, and R.-B. Wu, “An integrated signal and power integrity analysis for signal traces through the parallel planes using hybrid finite-element and finite-difference time-domain techniques,” IEEE Transactions on Advanced Packaging, vol. 30, pp. 558-565, August 2007.

 ÿ      T.-M. Shen, C.-F. Chen, T.-Y. Huang, and R.-B. Wu, “Design of vertically stacked waveguide filters in LTCC,” IEEE Transactions on Microwave Theory and Techniques, vol. 55, pp. 1771-1779, August 2007.

ÿ        C.-L. Wang, G.-H. Shiue, W.-D. Guo, and R.-B. Wu, “A systematic design to suppress wideband ground bounce noise in high-speed circuits by electromagnetic bandgap enhanced split powers,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 4209-4217, December 2006.

ÿ        C.-K. C. Tzuang, H.-H. Wu, H.-S. Wu, and J. Chen, "CMOS active bandpass filter using compacted synthetic quasi-TEM lines at C-band", IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 12, pp. 4548-4555, December 2006.

ÿ        C.-C. Wang, C.-W. Ku, C.-C. Kuo, and T.-L. Wu, “A time-domain approach for extracting broadband macro-π models of differential via holes,” IEEE Transactions on Advanced Packaging, Vol. 29, No. 4, pp. 789-797, November 2006

ÿ        Y.-C. Lin and K.-J. Hung, “Compact ultra-wideband rectangular aperture antenna and band-notched designs,” IEEE Transactions on Antennas and Propagations, Vol. 54, No. 11, pp. 3075-3081, November 2006.

ÿ        C.-F. Chen, T.-Y. Huang, and R.-B. Wu, “Design of dual- and triple-passband filters using alternately cascaded multi-band resonators,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 3550-3558, September 2006.

ÿ        T.-L. Wu and S.-T. Chen, “A photonic crystal power/ground layer for eliminating simultaneously switching noise in high-speed circuit,” IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 8, pp. 3398-3406, September 2006.

ÿ        G. H. Shiue, W. D. Guo, C. M. Lin, and R.-B. Wu, “Noise reduction using compensation capacitance for bend discontinuities of differential transmission lines,” IEEE Transactions on Advanced Packaging, vol. 29, pp. 560-569, August 2006.

ÿ        C. T. Wu and R.-B. Wu, “Hybrid TIE/FDTD method for open boundary coupling between isolation islands,” IEEE Transactions on Advanced Packaging, vol.29, pp. 623-630, August 2006.

ÿ        T.-Y. Huang and R.-B. Wu, “Steady-state response by finite-difference time-domain method and Lanczos algorithm,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 3038-3044, July 2006.

ÿ        C. F. Chen, F. Y. Huang, C. P. Chou, and R.-B. Wu, “Microstrip diplexers design with common resonator sections for compact size, but high isolation,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 1945-1952, May 2006.

ÿ        W.-D. Guo, G.-H. Shiue, C.-M. Lin, and R.-B. Wu, “Comparisons between serpentine and flat spiral delay lines on transient reflection/transmission waveforms and eye diagrams,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 1379- 1387, April 2006.

ÿ        C.-F. Chen, T.-Y. Huang, and R.-B. Wu, “Novel compact net-type resonators and their applications to microstrip bandpass filters,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 755-762, February 2006.

ÿ        M. I. Lai and S. K. Jeng, “Compact microstrip dual-band bandpass filters design using genetic-algorithm techniques, ” IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 1, pp. 160-168, January 2006.

ÿ        M. Lin, A. El Gamal, Y.-C. Lu, and S. Wong, “Performance benefits of monolithically stacked 3-D FPGA,” IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, Vol. 26, No. 2, pp. 216-229, February 2007.

ÿ        H.-C. Wang, K.-P. Ho, H.-K. Chen, and H.-C. Lu, “Phase and amplitude responses of narrowband optical filter measured by microwave network analyzer,” IEEE Journal of Lightwave Technology, vol. 24, no. 12, pp. 5075-5081, December 2006.

ÿ        J. Y. Lu, L.J. Chen, T. F. Kao, H. H. Chang, H. W. Chen,A. S. Liu, Y. C. Chen, R. B. Wu, W. S.Liu, J. I. Chyi, and C. K. Sun, “Terahertz microchip for illicit drug detection,“ IEEE Photonics Technology Letters, Vol. 18, pp. 2254-2256, November 2006.

ÿ        C.-M. Chang, J.-C. Chiu, W.-S. Jou, T.-L. Wu, and W.-H. Cheng, “New package scheme of a 2.5Gb/s plastic tranceiver module employing mutiwall nanotubes for low electromagnetic interference,” IEEE Journal of Selected Topics in Quantum Electronics, Vol. 12, No. 5, pp. 1025-pp. 1031, October 2006.

ÿ        T.-L. Wu, M.-C. Lin, C.-W. Lin, W.-S. Jou, T.-T. Shih, and W.-H. Cheng, “A high electromagnetic immunity plastic composite package for a 10-gb/s optical transceiver module,” IEEE/OSA Journal of Lightwave Technology, Vol. 24, No. 8, pp. 3195-3201, August 2006.

會議論文

ÿ        R. B. Wu, H. Wand, S. J. Chung, C. H. Lu, and C. H. Chen, “Microwave activities in Taiwan,“ 2007 IEEE MTT-S International Microwave Symposium, pp. 125-128, Honolulu, Hawaii, USA, June 2007.

ÿ        S. Wang and C.-K. C. Tzuang, “Compacted Ka-Band CMOS rat-race hybrid using synthesized transmission lines,” 2007 IEEE MTT-S International Microwave Symposium, pp. 1023-1026, Honolulu, Hawaii, USA, June 2007.

ÿ        S. Wang, H.-S. Wu, C.-H. Chang, and C.-K. C. Tzuang, “Modeling and suppressing substrate coupling of RF CMOS FMCW sensor incorporating synthetic quasi-TEM transmission lines,” 2007 IEEE MTT-S International Microwave Symposium, pp. 1939-1942, Honolulu, Hawaii, USA, June 2007

ÿ        Y.-C. Lu, K.-J. Hung, and Y.-C. Lin, “Methods of adjusting frequency ratio of a dual-band slot antenna with double T-match stubs,” 2007 IEEE AP-S International Antennas and Propagation Symposium, accepted to be published, Honolulu, Hawaii, USA, June, 2007.

ÿ        K.-B. Wu, G.-H. Shiue, W.-D. Guo, C.-M. Lin, and R.-B. Wu, “An efficient and flexible modeling for power/ground planes,” IEEE 15th Topical Meeting on Electrical Performance of Electronic Packaging, pp. 83-86, Phoenix, Arizona, USA, October 2006.

ÿ        W.-D. Guo, W.-N. Chine, C.-L. Wang, G.-H. Shiue, and R.-B. Wu, “Design of wideband impedance matching for through-hole via transition using ellipse-shaped anti-pad,” IEEE 15th Topical Meeting on Electrical Performance of Electronic Packaging, pp. 23-25, Phoenix, Arizona, USA, October 2006.

ÿ        H.-C. Kuo, S.-T. Chen, T.-L. Wu, “Improving the Radiated Immunity of the Strip-Lines Using a Novel Hybrid EBG Structure,” Electrical Performance of Electronic Packaging (EPEP 2006), pp. 223 - 236, Oct. 2006

ÿ        S. Sun, D. Pommerenke, K. Xiao, S.-T. Chen, and T.-L. Wu, “Characterizing package/PCB PDN interactions from a full-wave finite-difference formulation,” IEEE International Symposium on Electromagnetic Compatibility, Vol. 2, pp. 550-555, Portland, Oregon, USA, August 2006.

ÿ        M. I. Lai, C. F. Liu, and S. K. Jeng, “Design of a multifunctional and cost-effective wideband planar antenna array system for multiple wireless applications,” 2006 IEEE AP-S International Symposium and USNC/URSI National Science Meeting, Albuquerque, New Mexico, USA, July 2006.

ÿ        C. Y. Tsai and S. K. Jeng, “Design of an ultra-wideband waveform shaping network using an analog microwave differentiator array fed by a Gaussian pulse signal,” 2006 IEEE AP-S International Symposium and USNC/URSI National Science Meeting, Albuquerque, New Mexico, USA, July 2006.

ÿ        S. K. Jeng, “A semi-discrete scheme for computing two-dimensional electromagnetic field in time domain,” 2006 IEEE AP-S International Symposium and USNC/URSI National Science Meeting, Albuquerque, New Mexico, USA, July 2006.

ÿ        K.-F. Hung and Y.-C. Lin, “Simulation of single-arm fractional spiral antennas for millimeter wave applications,” IEEE Antennas and Propagation Society International Symposium 2006, pp. 3697-3700,Albuquerque,NM,USA, July 2006.

ÿ        K.-J. Hung and Y.-C. Lin, “Open-slot loaded monopole antennas for WLAN and UWB applications,” IEEE Antennas and Propagation Society International Symposium, pp. 4653-4656,Albuquerque,NM,USA, July 2006.

ÿ        C.-K. C. Tzuang, H.-H. Wu, H.-S. Wu, and J. Chen, “A CMOS miniaturized C-Band active bandpass filter,” 2006 IEEE International Microwave Symposium Digest, pp. 772-775, San Francisco, California, USA, June 2006.

ÿ        C.-F. Chen, T.-Y. Huang, and R.-B. Wu, “Miniaturized microstrip quasi-elliptical bandpass filters using slotted resonators,” 2006 IEEE International Microwave Symposium Digest, pp. 1185-1188,San Francisco,California, USA, June 2006.

ÿ        H.-C. Lu and Y.-T. Chou, “The thru-relfection-unequal-line (TRuL) calibration method with asymmetric R calibrator for multi-port scattering matrix measurement,” 2006 IEEE MTT-S International Microwave Symposium Digest, pp.1971~1974, San Francisco, California, USA, June 2006.

ÿ        C.-K. C. Tzuang, C.-H. Chang, H.-S. Wu, S. Wang, S.-X. Lee, C.-C. Chen, C.-Y. Hsu, K.-H. Tsai, and J. Chen, “An X-Band CMOS multifunction-chip FMCW radar,” 2006 IEEE International Microwave Symposium Digest, pp. 2011-2014, San Francisco, California, USA, June 2006.