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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳士元 | |
| dc.contributor.author | Hsin-Jou Huang | en |
| dc.contributor.author | 黃心柔 | zh_TW |
| dc.date.accessioned | 2021-06-16T03:50:06Z | - |
| dc.date.available | 2015-03-13 | |
| dc.date.copyright | 2015-03-13 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-01-22 | |
| dc.identifier.citation | REFERENCE
[1] W.-S. Chen and K.-L. Wong, “A Coplanar waveguide-fed printed slot antenna for dual-frequency operation,” in Proc. IEEE AP-S Int. Symp., Boston, MA, USA, Jul. 2001, pp. 140–143. [2] J.-S. Chen, “Studies of CPW-fed equilateral triangular-ring slot antennas and triangular-ring slot coupled patch antennas,” IEEE Trans. Antennas Propag., vol. 53, no. 7, pp. 2208–2211, Jul. 2005. [3] S. V. Shynu and M. J. Ammann, “A printed CPW-fed slot loop antenna with narrowband omnidirectional features,” IET Microwaves, Antennas Propag., vol. 3, no. 4, pp. 673–680, Jun. 2009. [4] S.-W. Lu, C.-H. Yang, and P. Hsu, “A CPW-fed slot-loop antenna with low cross-polarization radiation,” in Proc. Asia-Pacific Microw. Conf., Sydney, Australia, Dec. 2000, pp. 1400–1402. [5] M.-H. Yeh, P. Hsu, and J.-F. Kiang, “Analysis of a CPW-fed slot ring antenna,” in Proc. Asia-Pacific Microw. Conf., Taipei, Taiwan, Dec. 2001, pp. 1267–1270. [6] Y.-C. Chen, S.-Y. Chen, and P. Hsu, “A modified CPW-fed slot loop antenna with reduced cross-polarization and size,” IEEE Antennas Wireless Propag. Lett., vol. 10, pp. 1124–1126, 2011. [7] C.-P. Lai, S.-C., P. Hsu, and S.-Y. Chen, “On the Fundamental Resonace of Slot Loop Antenna Inductively Fed by a Coplanar Waveguide,” IEEE Trans. Antenna Propag., vol. 61. no. 12, pp. 6191–6195, Dec. 2013. [8] P.-L. Chi, R. Waterhouse, and T. Itoh, “Antenna miniaturization using slow wave enhancement factor from loaded transmission line models,” IEEE Trans. Antenna Propag., vol. 59, no. 1, pp.48–57, Jan.2011. [9] M.C. Scardelletti, G. E. Ponchak, S. Merritt, J. S. Minor, and C.A. Zorman, “Electrically small folded slot antenna utilizing capacitive loaded slot lines,” in Proc. IEEE Radio and Wireless Symp., Orlando, FL, pp. 731–734, Jan. 2008. [10] D. H. Lee, A. Chauraya, Y. Vardaxoglou, and W. S. Park, “A compact and low-profile tunable loop antenna integrated with inductors,” IEEE Antenna Wireless Propag. Lett., vol. 7, pp.621–624, 2008. [11] D. Schaubert, F. Farrar, A. Sindoris, and S. Hayes, “Microstrip antennas with frequency agility and polarization diversity,” IEEE Trans. Antennas Propag. vol. 29, no. 1, pp. 118–123, Jan. 1981. [12] P. Bartia and I. Bahl, “Frequency agile microstrip antennas,” Microwave Journal, vol. 25, pp. 67–70, Oct. 1982. [13] G. Le Ray, M. Himdi, and J. Daniel, “Frequency agile slot-fed patch antenna,” Electron. Lett., vol .32, no. 1, pp. 2–3, Jan. 1996. [14] N. Karmakar, “Shorting strap tunable stacked patch PIFA,” IEEE Trans. Antennas Propag., vol. 52, no. 11, pp. 2877–2884, Nov. 2004. [15] C. Kalialakis and P. Hall, “Analysis and experiment on harmonic radiation and frequency tuning of varactor-loaded microstrip antennas,” IET Microwaves, Antennas Propag., vol. 1, no. 2, pp. 527–535, Apr. 2007. [16] S.-Y. Chen, C.-W. Tseng, S.-C. Chiu, and P. Hsu, “Frequency-agile, miniaturized slot antenna for hand-held devices,” 2010 URSI International Symposium on Electromagnetic Theory, pp. 429–432, Berlin, Germany, Aug. 2010. [17] N. Behdad and K. Sarabandi, “A varactor-tuned dual-band slot antenna,” IEEE Trans. Antennas Propag., vol. 54, no. 2 pp. 401–408, Feb. 2006. [18] D. Peroulis, K. Sarabandi, and L. Katehi, “Design of reconfigurable slot antennas,” IEEE Trans. Antennas Propag., vol. 53, no. 2, pp. 645–654, Feb. 2005. [19] S. Nikolaou, R. Bairavasubramanian, C. Lugo, I. Carrasquillo, D. Thompson, G. Papapolymerou, and M. Tentzeris, “Pattern and frequency reconfigurable annular slot antenna using PIN diodes,” IEEE Trans. Antennas Propag., vol. 54, no. 2, pp. 439–448, Feb. 2006. [20] K. Van Caekenberghe, and K. Sarabandi, “A 2-Bit Ka-Band RF MEMS Frequency Tunable Slot Antenna,” IEEE Antennas Wireless Propag. Lett., vol. 7, pp. 179–182, 2008. [21] D. M. Pozar, Microwave Engineering, 2nd ed. New York, NY, USA: Wiley, 1998. [22] C. P. Lai, S. Y. Chen, H. J. Li, “Miniaturization and Impedance Matching of Coplanar Waveguide-fed Slot Antennas,” Doctoral Dissertation, National Taiwan University, June. 2013. [23] Agilent Technologies 11612A bias network. [Online]. [24] J. Villanen and P. Vainikainen, “Optimum dual-resonant impedance matching of coupling element based mobile terminal antenna structures,” Microw. Opt. Technol. Lett., vol. 49, no. 10, pp. 2472–2477, Oct. 2007. [25] H.A. Wheeler, “Fundamental limitations of small antennas,” in Proc. IRE, vol. 35, pp. 1479–1484, Dec. 1947. [26] S. E. Sussman-Fort and R. M. Rudish, “Non-Foster impedance matching of electrically-small antennas,” IEEE Trans. Antennas Propag., vol. 57, no. 8, pp. 2230–2241, Aug. 2009. [27] H. Mirzaei and G. Eleftheriades, “Antenna applications of non-Foster elements,” in Proc. IEEE Int. Workshop Antenna Tech., Mar. 2012, pp. 281–284. [28] C. Di Nallo, G. Bit-Babik, and A. Faraone, “Wideband antenna using non-Foster loading elements,” in Proc. IEEE Antennas Propag. Soc. Int. Symp., Jun. 2007, pp. 4501–4504. [29] K. A. Obeidat, B. D. Raines, and R. G. Rojas, “Application of characteristic modes and non-Foster multiport loading to the design of broadband antennas,” IEEE Trans. Antennas Propag., vol. 58, no. 1, pp. 203–207, Jan. 2010. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/55177 | - |
| dc.description.abstract | 在本論文中，吾人提出具頻率可調特性之環形槽孔及環形帶線微小化天線。從半波長共振環形槽孔天線出發，在天線之虛開路端，並聯電容元件，透過改變邊界條件之方式以達縮小天線尺寸之目標，而對應縮短之長度所需要的電容值，更可以透過簡單的共振模型得到初步估計，另一方面，當天線尺寸固定不變的條件下，增加此電容值將會使得天線之基本共振頻率下降。一系列不同電容值但相同結構之原型天線被設計作為驗證，更進一步的，以可變電容取代固定電容的位置，透過可變電容端電壓的調整，藉以實現不同的電容值。 | zh_TW |
| dc.description.abstract | Frequency-agile miniaturized slot and strip loop antennas are proposed in this dissertation. Begin from half-wavelength resonant slot loop antenna, a shunt capacitor is placed at the location of virtual-open end to miniaturize the antenna, and the associated capacitance Cter is chosen according to a simple resonator model. For a given perimeter of the slot loop, increasing Cter would lower its resonant frequency. The design concept is verified both numerically and experimentally through a series of prototype antennas loaded with chip capacitors of different values. Beyond that, frequency tunability is achieved by replacing the chip capacitor with a varactor diode, of which the capacitance can be controlled by tuning its bias voltage. For verification, a prototype antenna is designed and both simulated and measured results show that the resonant frequency is continuously tunable between 1.5 GHz and 2.5 GHz as the bias voltage is adjusted from 4V to 16V. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T03:50:06Z (GMT). No. of bitstreams: 1 ntu-104-R01942025-1.pdf: 2129035 bytes, checksum: 14c4ac2d521396f557c56b8065bfa07e (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | CONTENTS
口試委員會審定書 i 誌謝 ii 中文摘要 iv ABSTRACT v CONTENTS vi LIST OF FIGURES ix LIST OF TABLES xiv Chapter 1 Introduction 1 1.1 Motivation 1 1.2 Paper Survey 1 1.3 Chapter Outline 3 Chapter 2 Half-Wavelength Loop Antennas and Impedance Matching Methods 5 2.1 Half-Wavelength Loop Antennas 5 2.1.1 CPW-Fed Half-Wavelength Slot Loop Antenna 5 2.1.2 CPS-Fed Half-Wavelength Strip Loop Antenna 10 2.2 Impedance Matching Methods for Half-wavelength Loop Antennas 13 2.2.1 Impedance Matching for Half-Wavelength Slot Loop Antenna 13 2.2.2 Impedance Matching for Half-Wavelength Strip Loop Antenna 15 2.3 Definition of Bandwidth 17 2.3.1 Definition of Fractional Bandwidth 18 2.3.2 Definition of Tunable Bandwidth for Frequency-Agile Antennas 18 Chapter 3 Miniaturized CPW-Fed Slot Loop Antenna with Frequency Agility 19 3.1 Miniaturization of Slot Loop Antenna and Matching Method 19 3.1.1 Miniaturization of Slot Loop Antenna 19 3.1.2 Impedance Matching for Miniaturized Slot Loop Antenna 22 3.2 Miniaturized Slot Loop Antenna Using Chip Capacitor 23 3.2.1 Miniaturized Slot Loop Antenna Loaded with a Chip Capacitor 23 3.2.2 Prototype Antennas 23 3.2.3 Antenna Performance 24 3.2.4 Loss Analysis 32 3.3 Realization of Frequency-Agile Slot Loop Antenna Using Varactor 34 3.3.1 Prototype Antenna 34 3.3.2 Antenna Performance 37 3.3.3 Loss Analysis 46 Chapter 4 Miniaturized CPS-Fed Strip Loop Antenna with Frequency Agility 47 4.1 Miniaturization of Strip Loop Antenna and Matching Method 48 4.1.1 Miniaturization of Strip Loop Antenna 48 4.1.2 Impedance Matching for Miniaturized Strip Loop Antenna 50 4.2 Miniaturized Strip Loop Antennas Using Chip Inductor 51 4.2.1 Miniaturized Strip Loop Antenna Loaded with a Chip Inductor 51 4.2.2 Prototype Antennas 51 4.2.3 Antenna Performance 52 4.2.4 Loss Analysis 59 4.3 Realization of Frequency-Agile Strip Loop Antenna Using Varactor 61 4.3.1 Prototype Antenna 61 4.3.2 Antenna Performance 63 4.3.3 Loss Analysis 69 4.4 Comparison of Performance Between Slot Loop and Strip Loop 70 Chapter 5 Conclusion and Future Work 71 5.1 Conclusion 71 5.2 Future Work 72 REFERENCE 74 | |
| dc.language.iso | en | |
| dc.subject | 環形槽孔天線 | zh_TW |
| dc.subject | 頻率可調 | zh_TW |
| dc.subject | 環形帶線天線 | zh_TW |
| dc.subject | 微小化天線 | zh_TW |
| dc.subject | 共振型天線 | zh_TW |
| dc.subject | Resonant-type antennas | en |
| dc.subject | slot loop antennas | en |
| dc.subject | strip loop antennas | en |
| dc.subject | miniaturized antennas | en |
| dc.subject | frequency-agile antennas | en |
| dc.title | 頻率可調之共振環形小天線設計 | zh_TW |
| dc.title | Miniaturized Frequency-Tunable Loop Antennas | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 許博文,張道治,林根煌 | |
| dc.subject.keyword | 共振型天線,環形槽孔天線,環形帶線天線,微小化天線,頻率可調, | zh_TW |
| dc.subject.keyword | Resonant-type antennas,slot loop antennas,strip loop antennas,miniaturized antennas,frequency-agile antennas, | en |
| dc.relation.page | 77 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2015-01-22 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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| ntu-104-1.pdf 未授權公開取用 | 2.08 MB | Adobe PDF |
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