Essays about: "class D amplifier"

Showing result 1 - 5 of 9 essays containing the words class D amplifier.

1. 1. Current-Mode Class D Power Amplifier for 2.4GHz Wi-Fi

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Yann Jean Michael Pirot; [2023]
   Keywords : Power Amplifier; Wifi; Digital Power Amplfier; Class D; RFIC; Analogue; Effektförstärkare; Wifi; digital förstärkare; klass D; analog;

   Abstract : Modern wireless communication techniques employed in the Wi-Fi® protocol, such as orthogonal frequency-division multiplexing exhibit analogue signals with high peak-to-average power ratio. Therefore, power amplifiers for Wi-Fi suffer from low efficiency when operating in back-off mode, away from their maximum efficiency at peak power. READ MORE

3. 2. Design of a power amplifier for NB-IoT

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Rajeshwari Yogi; [2018]
   Keywords : NB-IoT; Power amplifier; Inverse class D power amplifer; Technology and Engineering;

   Abstract : An inverse class D power amplifier and a class A power amplifier are designed at schematic level for 20 dBm power class and NB-IoT specification in 65 nm CMOS technology. A suitable switch mode supply modulator is also designed. READ MORE

4. 3. Simulation and Construction of a Half-Bridge Class D Audio Amplifier

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Johan Engstrand; Niklas Kavathatzopoulos; Jonathan Nordenholm; [2018]
   Keywords : amplifier; class D; half-bridge; simulation; LTspice; KiCad; förstärkare; klass D; halvbrygga;

   Abstract : Usage of class D audio amplifiers has become increasingly widespread in recent years, mainly due to their high efficiency, which can reach almost 100 %. Class D amplifiers can also be compact, making them suitable for mobile applications. In contrast, the most efficient conventional amplifiers such as class B can reach a maximum efficiency of 78. READ MORE

5. 4. Development of a Class D motor amplifier for a next-generation mechanism control electronics

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Juan Camilo Garcia Hernandez; [2016]
   Keywords : Power; electronics; satellites; BLDC; sinusoidal; commutation; control; PID; class D amplifier; PWM;

   Abstract : This thesis was written at Airbus DS GmbH in Friedrichshafen, Germany, as part of a project which aims to develop a new generation of class-D power amplification circuits for sinusoidal commutating motors controlling the movement of different mechanisms in satellites. Currently used topologies have disadvantages such as high power loss, analog controlling and high degree of signal distortion. READ MORE

6. 5. Design of a predriver for an EDMOS-based Class-D power amplifier

   University essay from Elektroniska komponenter; Tekniska högskolan

   Author : Taif Mohsin; [2013]
   Keywords : RF; Power amplifier; DE; PAE; Output power; Effective area; Reliabilty issues; Predriver; EDMOS; CMOS.;

   Abstract : This thesis addresses the potential of implementing a predriver for class-D power amplifier for WLAN in 65 nm CMOS technology. In total, eight different predrivers have been created using Cadence Virtuoso CAD tools. All designs have been tested using Agilent's Advance Design System (ADS) and simulated using the ADS-Cadence dynamic link. READ MORE