Investigation of Aperture Coupled Microstrip Antenna to Obtain a High Efficient Active Integrated Antenna by Using Class F and Inverse Class F Power Amplifiers [PDF]
, 2013 In wireless communications and radar systems, there are requirements for high efficiency, small size, low cost, and wide bandwidth of transmitter front –end usage for commercial and also military applications.
Liu, Lei
core
Broadband RF Power Amplifier Design Methodology Using Sequential Harmonic Characterization [PDF]
, 2015 Radio Frequency Power Amplifier (RFPA) amplifies the communication signals to the required power level for transmission. It is the most power consuming stage in a transceiver chain; consequently, any improvement in terms of dissipated power and ...
Taghavi, Hosein
core +1 more source
300 GHz broadband power amplifier with 508 GHz gain-bandwidth product and 8 dBm output power [PDF]
, 2022 S.1249-1252This paper presents a broadband H-band (220 - 325 GHz) power amplifier in a 35nm InGaAs-based metamorphic high electron mobility transistor technology.
Leuther, Arnulf +4 more
core +1 more source
Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application
Advanced Materials, EarlyView.This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong +12 more
wiley +1 more source
Development of Broadband Power Amplifiers [PDF]
, 2007 根據多項研究顯示不論在時間或是空間上，3GHz以下頻帶使用率約為15％∼85％，在3GHz以上的頻帶使用率更是相當低。因此美國聯邦通訊委員會（FCC）提出感知無線電系統（Cognitive Radio System），藉由偵測以及調整使用頻帶可以在不影響正規使用者的情形下提高頻帶使用率。為了能夠同時傳送多頻帶的訊號，傳送端必須要有一個寬頻功率放大器去適應這種系統。 本論文主要研究內容為射頻功率放大器的理論以及設計。我們分析了各種寬頻功率放大器的技巧，最後採用網路合成寬頻匹配的方法去實現寬頻功率放大器 ...
葉威志, Yeh, Wei-Chih
core
Gain Characteristics for C-Band Erbium Doped Fiber Amplifier Utilizing Single and Double-Pass Configurations: A Comparative Study [PDF]
Engineering and Technology Journal, 2014 An erbium doped fiber amplifier in the conventional communication window utilizing single and double pump pass configurations were demonstrated and compared using OptiSystem 12 software.
Abdulla. K. Abass +2 more
doaj +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials
Advanced Materials, EarlyView.A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella +3 more
wiley +1 more source
Broadband Class-EM power amplifier with double reactance compensation technique [PDF]
, 2020 This paper presents the analysis and design of a high-efficiency broadband Class-EM power amplifier (PA). The inherent broadband characteristic of the Class-EM PA that turns out due to the resistive-reactive impedance terminations at the fundamental and ...
Safari Mugisho, Moise +2 more
core +1 more source
Applied SciencesTo meet the demand for high efficiency in modern broadband communication systems, this paper presents a novel continuous-mode Doherty power amplifier design method based on integrated high-order filter prototypes.
Peng Tao, Hui Lv, Benyuan Chen
doaj +1 more source