Efficiency Improvement of WCDMA Base Station Transmitters using Class-F power amplifi
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
project report helper
Active In SP

Posts: 2,270
Joined: Sep 2010
06-10-2010, 03:33 PM

.pdf   Venkataramani_Thesis.pdf (Size: 917.85 KB / Downloads: 47)
Efficiency Improvement of WCDMA Base Station Transmitters using Class-F power amplifiers

Muthuswamy Venkataramani

Universal Mobile Telecommunications Systems (UMTS) is the preferred third generation (3G) communication standard for mobile communications and will provide worldwide coverage, a convenient software technology and very high data rate. The high data rate, especially, requires the use of bandwidth-efficient modulation schemes such as Quadrature Phase Shift Keying (QPSK). But modulation schemes such as QPSK need, in turn, a very linear power from the output of the transmitter power amplifier in order to meet the spectral requirements. A linear power amplifier, traditionally, has very low energy efficiency. Poor energy efficiency directly affects operational costs and causes thermal heating issues in base station transmitters. Thus the power amplifier designer is forced to trade-off between linearity and efficiency. As a result of this trade-off a Class-AB power amplifier is most often used in QPSK based systems. Class-AB power amplifiers provide acceptable linearity at efficiency values around 45-50% typically. This compromise is not a satisfactory solution but is inevitable while using traditional power amplifier design techniques.


Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Tagged Pages: wcdma, wcdma transmitter pdf,
Popular Searches: simple fm transmitters, wcdma, gsm base power countrol images, wcdma technology for 3g cellular systems, engine efficiency improvement projects, physicprojects class 12, engineering project on base station subsystem,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  REPORT ON HIGH-EFFICIENCY VOLTAGE REGULATOR FOR RURAL NETWORKS seminar projects maker 0 423 26-09-2013, 12:27 PM
Last Post: seminar projects maker
  Introduction to Class diagram Report study tips 0 237 09-09-2013, 04:15 PM
Last Post: study tips
  MS Power Point study tips 0 264 20-08-2013, 03:30 PM
Last Post: study tips
  POWER FROM SPACE FOR USE ON EARTH seminar projects crazy 5 4,874 16-08-2013, 09:59 AM
Last Post: study tips
  On Scheduling and Power Control in Multi-Cell Coordinated Clusters pdf study tips 0 242 03-06-2013, 03:24 PM
Last Post: study tips
  Low-Cost Low-Power Radios: Bluetooth and Zigbee study tips 0 215 28-05-2013, 03:30 PM
Last Post: study tips
  MICROCONTROLLER BASED POWER THEFT IDENTIFICATION (Download Full Seminar Report) Computer Science Clay 247 113,985 03-05-2013, 09:38 AM
Last Post: study tips
  Seminar Report on Energy Efficiency of Intelligent Ram pdf study tips 1 420 07-03-2013, 12:46 PM
Last Post: study tips
  Codes, Correlations and Power Control in OFDM pdf study tips 0 333 05-03-2013, 01:00 PM
Last Post: study tips
  CLASS DIAGRAM study tips 0 306 23-02-2013, 11:46 AM
Last Post: study tips