本論文將提出全金屬機殼之槽孔天線設計，並實際應用於筆記型電腦上，分別為WLNA槽孔天線、LTE槽孔天線及LTE與WLAN雙模式操作之整合式槽孔天線。
首先，依照二分之一波長的理論長度來設計槽孔，並將槽孔嘗試縮小，利用近似單極天線 (Multi-input Multi-output, MIMO) 結構的概念及多支路結構設計天線激發源，接著透過激發源結構上的調整以及折彎的方式調整槽孔與激發源之間的共振，使天線在需求頻帶運作；槽孔與激發源的設計皆大幅縮小槽孔天線的尺寸，使其更適合放入筆記型電腦中。天線操作頻段上包含目前最常使用的無線區域網路(WLAN : Wireless Local Area Network) 2.4/5 GHz雙頻帶，及第四代行動通訊(4G) LTE常用頻帶，其中包含Band 3、Band 8及Band 28。
本論文最後將設計的WLAN槽孔天線及LTE槽孔天線做整合，使天線在筆記型電腦的位置更佳、更有效的運作，且天線避免因擺放位置而造成的收訊死角，並具有雙模操作，在應用上更為便利。
詳細的天線設計、模擬、量測、輻射場型、電流分佈及實驗討論都將在本論文中做分析及探討。

In this paper, we propose three kinds of Slot antenna design suitable for notebook with full-metal housing. It includes WLAN slot antenna, LTE slot antenna and LTE + WLAN combo slot antenna.
By adjusting the slot antenna dimensions and feeding structure, the good antenna bandwidth and performances are obtained. It makes the proposed antennas more suitable for the notebook with full metal housing. The antenna operating bandwidth can meet the requirements of WLAN (Wireless Local Area Network) 2.4 GHz / 5 GHz dual-band and the fourth generation mobile communication technology standards (4G) Band 3, Band 8 and Band 28.
Besides, we also integrated the WLAN slot antenna and LTE slot antenna, so that not only
can the antenna be placed better on the laptop with good radiation coverage, but can also
achieve the WLAN and LTE dual-mode operation.
Details of the antenna design, simulation results, measurement results, radiation pattern, current distribution and experimental results have been analyzed and discussed in this paper.

[1] J. Zhu, Y. Ban, R. Xu, C. Sim, J. Guo and Z. Yu, "Miniaturized Dual-Loop NFC Antenna With a Very Small Slot Clearance for Metal-Cover Smartphone Applications", IEEE Transactions on Antennas and Propagation, vol. 66, no. 3, pp. 1553-1558, 2018.
[2] J. Zhu, Y. Ban, R. Xu, C. Sim and Z. Yu, "NFC Loop Antenna in Conjunction With the Lower Section of a Metal Cover", IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 3131-3134, 2017.
[3] J. Xu, Z. Chen, X. Qing and W. Hong, "140-GHz Planar Broadband LTCC SIW Slot Antenna Array", IEEE Transactions on Antennas and Propagation, vol. 60, no. 6, pp. 3025-3028, 2012.
[4] J. Zhu, S. Liao, S. Li and Q. Xue, "60-GHz Substrate Integrated Waveguide Based Monopulse Slot Antenna Arrays", IEEE Transactions on Antennas and Propagation, pp. 1-1, 2018.
[5] C. Lee and S. Su, "Very-low-profile, 2.4/5.2/5.8-GHz, triband WLAN antenna for laptop-tablet computer with complete metal cover", Microwave and Optical Technology Letters, vol. 58, no. 1, pp. 225-233, 2015.
[6] C. Lee, S. Su, S. Chen and C. Fu, "Low-Cost, Direct-Fed Slot Antenna Built in Metal Cover of Notebook Computer for 2.4-/5.2-/5.8-GHz WLAN Operation", IEEE Transactions on Antennas and Propagation, vol. 65, no. 5, pp. 2677-2682, 2017.
[7] S. Su, Y. Hsieh and S. Chen, "Integration of very-low-profile slot antenna into notebook metal cover with narrow bezel", 2017 International Symposium on Antennas and Propagation (ISAP), 2017.
[8] J. Prasojo and D. WidiAstuti, "Rectangular microstrip antenna with annular slot for WLAN", 2017 International Conference on Broadband Communication, Wireless Sensors and Powering (BCWSP), 2017.
[9] S. Chen, Y. Lee, C. Liou and P. Wu, "Monopole antenna integrated with keyboard ground plane in a laptop computer", 2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2016.
[10] H. Yang, H. Chen, T. Huang and C. Kuo, "Simple open slot antenna for LTE/WWAN smartphone with metallic frame", 2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2016.
[11] M. Stanley, Y. Huang, H. Wang, H. Zhou, Z. Tian and Q. Xu, "A Novel Reconfigurable Metal Rim Integrated Open Slot Antenna for Octa-Band Smartphone Applications", IEEE Transactions on Antennas and Propagation, vol. 65, no. 7, pp. 3352-3363, 2017.
[12] H. Chen, H. Yang and C. Sim, "Single Open-Slot Antenna for LTE/WWAN Smartphone Application", IEEE Transactions on Antennas and Propagation, vol. 65, no. 8, pp. 4278-4282, 2017.
[13] A. Krewski, W. Schroeder and K. Solbach, "MIMO LTE antenna design for laptops based on theory of characteristic modes", 2012 6th European Conference on Antennas and Propagation (EUCAP), 2012.
[14] A. Krewski, W. Schroeder and K. Solbach, "Multi-band 2-port MIMO antenna design for LTE-enabled 13″ monocoque laptop", 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013.
[15] S. Chen and Y. Tsou, "LTE/WWAN monopole antenna for laptop computer applications", 2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES), 2016.
[16] I. Syrytsin, S. Zhang and G. Pedersen, "Performance Investigation of a Mobile Terminal Phased Array With User Effects at 3.5 GHz for LTE Advanced", IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 1847-1850, 2017.
[17] S. Chen and Y. Tsou, "Small-Size LTE/WWAN Two-Strip Monopole Exciter Antenna Integration With Metal Covers", IEEE Transactions on Antennas and Propagation, vol. 64, no. 8, pp. 3707-3711, 2016.
[18] S. Shoaib, I. Shoaib, Xiaodong Chen and C. Parini, "MIMO antennas for next generation mobile terminals", 2016 10th European Conference on Antennas and Propagation (EuCAP), 2016.
[19] L. Chen and K. Wong, "Side-edge LTE antenna with a narrow ground clearance for the smartphone", 2016 10th European Conference on Antennas and Propagation (EuCAP), 2016.
[20] C. Chang, W. Liao and C. Tsai, "Metal Body-Integrated Open-End Slot-Antenna Designs for Handset LTE Uses", IEEE Transactions on Antennas and Propagation, vol. 64, no. 12, pp. 5436-5440, 2016.
[21] M. Ikram, R. Hussain, A. Ghalib and M. Sharawi, "Compact 4-element MIMO antenna with isolation enhancement for 4G LTE terminals", 2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 2016.
[22] A. Singh, A. Agarwal and N. Jain, "A planer 2G/3G/LTE/WWAN/WiMAX antenna for tablet computer", 2016 5th International Conference on Reliability, Infocom Technologies and Optimization (Trends and Future Directions) (ICRITO), 2016.
[23] J. Dong, X. Yu and L. Deng, "A Decoupled Multiband Dual-Antenna System for WWAN/LTE Smartphone Applications", IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 1528-1532, 2017.
[24] Q. Bai, R. Singh, K. Ford, R. Langley and T. O'Farrell, "Tuneable dual-band antenna for sub 1 GHz cellular mobile radio applications", 2016 Loughborough Antennas & Propagation Conference (LAPC), 2016.
[25] Z. Hu, J. Wei, X. Shen and T. Chiou, "Hybrid antenna design integrated with the metal cover of notebook", 2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2016.
[26] M. Ghaffarian, G. Moradi and P. Mousavi, "Wide-b-and circularly polarised slot antenna by using artificial transmission line", IET Microwaves, Antennas & Propagation, vol. 11, no. 5, pp. 672-679, 2017.
[27] S. Chen, J. Sze, H. Jian and W. Cai, "Loop antenna for the LTE/WWAN metal-casing laptop computer", 2017 IEEE International Conference on Computational Electromagnetics (ICCEM), 2017.
[28] F. Ahmed, M. Chowdhury and A. Rahman, "A multiband MIMO antenna for future generation handset applications", 2017 International Conference on Electrical, Computer and Communication Engineering (ECCE), 2017.
[29] S. Chen, C. Huang and W. Cai, "Integration of a Low-Profile, Long-Term Evolution/Wireless Wide Area Network Monopole Antenna into the Metal Frame of Tablet Computers", IEEE Transactions on Antennas and Propagation, vol. 65, no. 7, pp. 3726-3731, 2017.
[30] I. Syrytsin, S. Zhang and G. Pedersen, "Antenna array construction on a mobile terminal chassis at 3.5 GHz for LTE advanced", 2017 11th European Conference on Antennas and Propagation (EUCAP), 2017.
[31] Y. Tan, N. Hong and Y. Tay, "Tuning of LTE main antenna using flexible tunable LC resonant circuitry", 2017 11th European Conference on Antennas and Propagation (EUCAP), 2017.
[32] S. Chen and C. Fu, "Switchable Long-Term Evolution/ Wireless Wide Area Network/ Wireless Local Area Network Multiple-Input and Multiple-Output Antenna System for Laptop Computers", IEEE Access, vol. 5, pp. 9857-9865, 2017.
[33] K. Chuang, W. Syu, S. Chen and C. Wang, "Switchable non-physical LTE/WWAN antenna", Electronics Letters, vol. 53, no. 17, pp. 1169-1170, 2017.
[34] Y. Li, C. Sim, Y. Luo and G. Yang, "12-Port 5G Massive MIMO Antenna Array in Sub-6GHz Mobile Handset for LTE Bands 42/43/46 Applications", IEEE Access, vol. 6, pp. 344-354, 2018.