Compression point

1 dB compression point (P1dB) on a graph of the transfer function (in German). An ideal amplifier will produce a straight line (German: ideale Kennlinie). A real-world amplifier has an output power limit and will therefore exhibit gain compression (German: reale Kennlinie)

The compression point is a metric describing an aspect of electronic amplifiers. For example, the 1-dB compression point (sometimes notated as P1dB[1][2]) is the output power of the amplifier (for the signal of interest) at which it differs from an ideal linear amplifier by more than 1 dB. So a larger 1-dB compression point means that the amplifier can produce larger outputs (for the same amount of distortion).[3] It will often be quoted by manufacturers of amplifiers.[4][5]

The compression point is sometimes used (interchangeably with the third-order intercept point) to define the upper limit of the dynamic range of an amplifier. A rule of thumb that holds for many linear radio-frequency amplifiers is that the 1 dB compression point point falls approximately 10 dB below the third-order intercept point.[citation needed]

References

  1. ^ Frenzel, Lou (October 24, 2013). "What's The Difference Between The Third-Order Intercept And The 1-dB Compression Points?". Electronic Design.
  2. ^ "1dB Compression Point (P1dB Point)". May 16, 2015.
  3. ^ Rouphael, Tony J. (2009). "Transceiver System Analysis and Design Parameters". Signal Processing for Software-Defined Radio. pp. 161–198. doi:10.1016/B978-0-7506-8210-7.00006-0. ISBN 978-0-75-068210-7.
  4. ^ "Product Documentation - NI". www.ni.com.
  5. ^ Rouphael, Tony J. (2014). "System Nonlinearity". Wireless Receiver Architectures and Design. pp. 179–261. doi:10.1016/B978-0-12-378640-1.00004-4. ISBN 978-0-12-378640-1.


Stub icon

This electronics-related article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.