http://iet.metastore.ingenta.com
1887

## Envelope tracking techniques

• Author(s):
• DOI:

$16.00 (plus tax if applicable) ##### Buy Knowledge Pack 10 chapters for$120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:

Radio Frequency and Microwave Power Amplifiers. Volume 2: Efficiency and Linearity Enhancement Techniques — Recommend this title to your library

## Thank you

The growing demand for high data rate cellular systems has pushed the adoption of 4G/5G Long-Term Evolution (LTE) which uses high peak-to-average power (PAPR) modulation schemes. 5G will bring high data capacity and low latency using the sub-6 GHz and mm-wave spectrum. The increased adoption of powerful worldwide smart phones has been in part possible due to increase of CMOS technology in lower feature nodes as FinFET 7 nm/14 nm. This has made possible the adoption of “old” techniques such as envelope tracking (ET) into smart phones. The ET technique was mentioned back in 1952 by Leonard R. Kahn who introduced a related technique, envelope elimination and restoration (EER). Envelope tracking improves the linearity and efficiency RF for power amplifiers, typically the most power-hungry components in a wireless transmitter. With explosive band proliferation as well as the use of carrier aggregation (CA) and multiple input multiple output (MIMO) techniques, the research area of improving the cost, size, and the performance of the RF transmit solution is very active.

Chapter Contents:

• 3.1 Envelope tracking technique
• 3.2 Envelope tracking for cellular LTE FDD and TDD
• 3.3 Power amplifier under envelope tracking operation
• 3.4 Envelope tracking systems
• 3.5 Envelope tracking circuitry
• 3.6 Envelope tracking for high power
• 3.7 Local ET linearization
• 3.8 Multilevel supply envelope tracking
• 3.9 Envelope tracking calibration
• 3.10 Envelope tracking noise
• References

Preview this chapter:

Envelope tracking techniques, Page 1 of 2

| /docserver/preview/fulltext/books/cs/pbcs071g/PBCS071G_ch3-1.gif /docserver/preview/fulltext/books/cs/pbcs071g/PBCS071G_ch3-2.gif

### Related content

content/books/10.1049/pbcs071g_ch3
pub_keyword,iet_inspecKeyword,pub_concept
6
6
This is a required field