Design of LTE MIMO Antennas for Mobile Communication Devices
| Autor: | Yu-Shian Tsai, 蔡昱賢 |
|---|---|
| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 In this thesis, the subjects focuses on the LTE MIMO antennas for mobile devices. Three kinds of antenna for smart watch, smart phones and laptop computer are proposed, All the antenna have low profile and multi-frequency operation, the antenna design principle is built on the monopole, inverted F antenna and slot antenna, which integrates matching circuit to excite the LTE / GSM / WWAN / WLAN bands. A smart watch antenna with a metal strap in designed, which have height of 5 mm and system ground plane size of 36 × 36 mm2. The antenna operates at low band (698 ~ 960 MHz) and middle band (1710 ~ 2690 MHz), the low band uses a high-pass matching circuit to adjust the impedance matching. While the middle band can be changed to a GPS band by using a switch. The second design uses two feeding ports to connect the metal frame radiator for smart phone. The antenna has height of 5 mm and band-pass filter circuit to reduce the isolation of the two ports. The third design for laptop antenna is used the open-slot between the metal frame and system ground as a radiator. The antenna height is 7 mm, and excite the slot modes operating at 824 ~ 960 MHz / 1710 ~ 2690 MHz / 5150 ~ 5875 MHz. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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