rf的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到下列懶人包和總整理

Modeling and Parameter Extraction Techniques of Silicon-Based Radio Frequency Devices

為了解決rf的問題，作者Zhang, Ao,Gao, Jianjun 這樣論述：

This comprehensive compendium describes the basic modeling techniques for silicon-based semiconductor devices, introduces the basic concepts of silicon-based passive and active devices, and provides its state-of-the-art modeling and equivalent circuit parameter extraction methods.The unique referenc

e text benefits practicing engineers, technicians, senior undergraduate and first-year graduate students working in the areas of RF, microwave and solid-state device, and integrated circuit design.

rf進入發燒排行的影片

利用焙燒暨酸浸法從廢棄LED晶粒中回收鎵金屬資源

為了解決rf的問題，作者吳德懷 這樣論述：

LED是發光二極體(Light Emitting Diode)的簡稱。由於LED燈具有節能、無汞等特性，在照明市場之需求日益增加，LED在許多領域已經取代了傳統光源(白熾燈、螢光燈等)。LED燈之高效率白光照明主要是由LED晶粒中氮化鎵(GaN)半導體所產生。隨著LED市場的擴大，未來將產生大量的LED廢棄物。因此，回收廢棄LED中所含的鎵金屬資源對於資源的可持續利用和環境保護都具有重要意義。本研究以廢棄LED燈珠為對象，利用焙燒與酸浸法從其LED晶粒中回收鎵金屬資源，主要包括三個部分：化學組成分析、氟化鈉焙燒處理與酸溶浸漬等。探討各項實驗因子包括焙燒溫度、焙燒時間、礦鹼比、酸浸漬種類及濃度

、浸漬時間、及浸漬固液比等，對於鎵金屬浸漬率之影響，並與各文獻方法所得到的鎵金屬浸漬效果進行比較。研究結果顯示，LED晶粒中含有鎵5.21 wt.%，氟化鈉焙燒暨酸溶浸漬之最佳條件為焙燒溫度900 ℃、焙燒時間3hr、礦鹼比1:6.95、鹽酸浸漬濃度0.5 M、浸漬溫度25 ℃、浸漬時間10mins、固液比2.86 g/L，鎵金屬浸漬率為98.4%。與各文獻方法相比較，本方法可於相對低溫且常壓下獲得較高之鎵金屬浸漬效果。

Modern Ferrites: Basic Principles and Engineering Applications

為了解決rf的問題，作者Harris, Vincent G. 這樣論述：

A robust exploration of the basic principles of ferrimagnetics and their applicationsIn Modern Ferrites: Volume 1, renowned researcher and educator, Vincent G. Harris delivers a comprehensive overview of the basic principles and ferrimagnetic phenomena of modern ferrite materials. Volume 1 explor

es the fundamental properties of ferrite systems, including their structure, chemistry, and magnetism; the latest in processing methodologies; and the unique properties that result. In addition to these unique properties, the included resources explore the processing, structure, and property relatio

nships in ferrites as nanoparticles, thin and thick films, compacts, and crystals. The authors discuss how these relationships are key to realizing practical device applications laying the foundation for next generation technologies. This volume also includes: Comprehensive investigation of the hist

orical and scientific significance of ferrites upon ancient and modern societies;Neel’s expanded theory of molecular field magnetism applied to ferrimagnetic oxides together with theoretic advances in density functional theory;Nonlinear excitations in ferrite systems and their potential for device t

echnologies;Practical discussions of nanoparticle, thin, and thick film growth techniques;Ferrite-based electronic band-gap heterostructures and metamaterials.Perfect for RF engineers and magnetitians working in the field of RF electronics, radar, communications, and spintronics as well as other eme

rging technologies. Modern Ferrites will earn a place on the bookshelves of engineers and scientists interested in the ever-expanding technologies reliant upon ferrite materials and new processing methodologies. Modern Ferrites Volume 2: Emerging Technologies and Applications is also available (ISBN

: 9781394156139).

應用於移動式 UHF 射頻充電的高效率且寬輸入範圍之電源管理晶片採用自適應負載/輸入功率匹配技術

為了解決rf的問題，作者郭浩毅 這樣論述：

近年來由於物聯網的興起，使得環境中佈建的無線感測器之需求快速上升。傳統的無線感測器之能量來源主要藉由化學電池提供，因此要具有較長的生命週期與較小的體積是相當困難的。無線能量擷取技術為透過環境中的能量來驅動電子電路的相關技術，提供無線感測節點所需的能量並且延長電池壽命。RF功率擷取方法是目前最常使用於短距離(數十公尺內)能量傳遞的方法之一，但由於目前的RF能量管理電路的高效率受限於窄小的輸入功率範圍，因此相關的應用依舊十分受限。本論文以應用於物聯網之無線能量擷取系統為出發點，除了使用可重構式技術來改善傳統交直流轉換架構之窄小輸入範圍的能量轉換曲線達成具有大動態輸入範圍之交直流轉換電路外，更藉由

後端包含負載調變電路的MPPT技術與低壓降穩壓器穩定輸出電壓值來提高高輸入功率時整體系統之效率。整體系統以CMOS 0.18μm製程製作，為一個全整合式之積體電路，其寬輸入動態範圍之交直流轉換電路具有54.2%之最佳轉換效率、-19.6dBm之靈敏度與20dB大輸入範圍且高轉換效率(Efficiency > 20%)。高轉換效率的能量擷取與高整合晶片將可以有效地解決過去RF能量擷取的效率不佳及能量浪費等問題，並且可以應用於更多功率以及體積限制的植入式生物感測器系統、智慧感測系統、自動電子收費系統貼片及無線充電等需要無線能量傳輸及穩定輸出電壓值的電路中。