Related Directory Categories
- Front-ends and Plug-ins (13)
- GCC Front Ends (8)
- Front-Ends (3)
Sources
open directory project
Help build the largest human-edited directory on the web.
Submit a site - Become an editor
Wikipedia. Licensed under the GNU Free Documentation License.
Are you an expert in this subject? Join the discussion and share your knowledge at Wikipedia.org.
RF front end
From Wikipedia, the free encyclopedia
RF front end is a generic term for everything in a receiver that sits between the antenna and the intermediate frequency (IF) stage.
For most super-heterodyne architectures, this part of the receive chain consists of:
- A matching circuit to allow all the received energy from the antenna to get to the next stage;
- A 'gentle' band-pass filter (BPF) to knock down out-of-band jammers;
- Another matching circuit at the input of the low-noise amplifier (LNA);
- The LNA itself — its primary responsibility is to set the receive sensitivity of the receiver, by offering high gain; and very low noise figure (NF);
- Another matching network between the LNA output and the receive (RX) mixer (downconverter);
- The RX mixer itself.
 |
This article related to radio is a stub. You can help Wikipedia by expanding it. |