本文關鍵詞：智能手表天線研究　出處：《華南理工大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 可穿戴天線 多頻天線 小型化天線 智能手表天線

【摘要】：可穿戴無線通信設備是直接穿在身上或是整合到用戶的衣服或配件的一種便攜式通信設備。迄今為止，對可穿戴智能設備的研究已經從概念研究轉向了實體研究，比如：谷歌眼鏡、導航鞋、智能手環(huán)、智能手表等。智能手表作為一種符合人們佩戴習慣的新型可穿戴移動智能終端，能夠通過手表與互聯(lián)網相連，滿足信息推送的功能，它的便攜性和可穿戴性吸引著人們進一步去完善它的功能，比如，獨立完成與通信網絡連接、在特殊情況下能夠代替手機等。為滿足不斷增長的智能需求，實現(xiàn)無線信號的有效發(fā)送與接收，研究新型天線是實現(xiàn)智能手表的關鍵。本文系統(tǒng)研究新型智能手表天線的基本結構和實現(xiàn)方法。 論文首先探究了可穿戴天線的介質基板、人體電磁特性和放置在人體的天線需要滿足的相關性能，然后對適用于基于表帶的智能手表天線的小型化、多頻化、寬帶化的關鍵技術分別進行了介紹，最后提出了一種適用于智能手表的小型化寬帶多頻天線結構。 論文第三章提出了一種基于表帶的智能手表直板天線，采用多彎折輻射枝節(jié)技術，實現(xiàn)了小型化的天線結構，天線尺寸為40mm136mm，與普通手表的尺寸相當。天線具有多頻和寬頻的特點，天線電壓駐波比VSWR3（回波損耗6dB）的帶寬覆蓋870-990MHz、1530-1610MHz、2050-3230MHz、3350-3770MHz、4090-6850MHz頻段，相對帶寬分別為12.9%、2.5%、44.7%、11.8%、50.5%。 第四章結合實際情況，研究將天線與戴在手腕上的手表共形后的性能。以人體手腕為參考，將戴在手腕上的手表的形狀抽象為一個由九個矩形平面連接而成的環(huán)狀結構，天線被蝕刻在位于側邊的三個矩形面上。彎折后天線的VAWR3帶寬為0.93-0.94GHz、1.48-1.61GHz、1.93-3.23GHz、3.4-3.76GHz、4.02-6.17GHz、6.36-6.69GHz，可完全覆蓋GPS（1.575-GHz）、WiMAX、WiFi頻段。本章還研究了由手腕粗細不同導致的天線基板彎曲度不同而引起的參數(shù)變化對天線性能的影響，為智能手表天線的實際應用提供了參考依據(jù)。 第五章對放在人體手腕上的基于表帶的智能手表天線的性能進行了研究。仿真的人體手腕模型為一種簡化結構，由皮膚、脂肪、肌肉和骨骼組成。為了避免天線地板與人體直接接觸，，在天線和人體模型中間留有一層泡沫介質。天線實物隔著泡沫放置在人體手腕上進行測量，天線VSWR3的帶寬覆蓋0.78-0.89GHz、1.42-3.22GHz、3.35-3.85GHz、4.05-4.36GHz、4.55-6.15GHz、6.25-6.61GHz頻段。上述結果表明，提出的基于表帶的智能手表天線能夠應用于新型智能手表通信系統(tǒng)。
[Abstract]:A wearable wireless communication device is a portable communication device that is worn directly on the body or integrated into the clothes or accessories of the user. Research on wearable smart devices has shifted from conceptual to physical, such as Google Glass, navigation shoes, and smart bracelets. As a new wearable mobile intelligent terminal, smart watch can connect with the Internet through watch and meet the function of information push. Its portability and wearability attract people to further improve its functions, for example, to complete the communication network connection independently, can replace the mobile phone in special circumstances, in order to meet the growing demand for intelligence. It is the key to realize the smart watch to transmit and receive the wireless signal effectively and to study the new antenna. This paper systematically studies the basic structure and the realization method of the new smart watch antenna. In this paper, the dielectric substrate of wearable antenna, the electromagnetic characteristics of human body and the correlation energy of antenna placed in human body are discussed. Then, the miniaturization and multi-frequency of smart watch antenna based on watch band are discussed. The key technologies of wideband are introduced respectively. Finally, a miniaturized wideband multi-frequency antenna structure for smart watches is proposed. In the third chapter, a kind of smart watch antenna based on watch band is proposed. The antenna structure is miniaturized by using multi-bending radiation branch technology. The size of antenna is 40mm 136mm. The antenna has the characteristics of multi-frequency and wide-band. The VSWR3 (return loss 6dB) has a bandwidth coverage of 870-990MHz. The relative bandwidth of 1530-1610MHzn 2050-3230MHz / 3350-3770MHzn 4090-6850MHz is 12.9% respectively. Two and a half and forty four seven and eleven eight and fifty five and a half. Chapter 4th, combined with the actual situation, studies the performance of the antenna conformal with the watch worn on the wrist, taking the wrist of the human body as a reference. Abstract the shape of the watch worn on the wrist into a ring of nine rectangular planes. The antenna is etched on three rectangular surfaces on the side. The VAWR3 bandwidth of the bent antenna is 0.93-0.94GHz, 1.48-1.61GHz. 1.93-3.23GHzn 3.4-3.76GHz 4.02-6.17GHz 6.36-6.69GHz. It can fully cover the GPS 1.575-GHz WiMAX. In this chapter, we also study the effect of the parameter changes caused by the different curvature of the antenna substrate caused by the different wrist thickness on the antenna performance, which provides a reference for the practical application of smart watch antenna. Chapter 5th studies the performance of a watch antenna based on a watch band on a human wrist. The simulated human wrist model is a simplified structure consisting of skin and fat. In order to avoid direct contact between the antenna floor and the human body, a layer of foam medium is left between the antenna and the human body model. The antenna object is placed on the wrist of the human body through foam to be measured. The bandwidth of the antenna VSWR3 is 0.78-0.89GHz, 1.42-3.22GHz, 3.35-3.85GHz, 4.05-4.36GHz. The above results show that the proposed smart watch antenna based on watch band can be applied to a new type of smart watch communication system.
【學位授予單位】：華南理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN820

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相關期刊論文 前1條

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