Service Manuals, User Guides, Schematic Diagrams or docs for : HP Publikacje a-110
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download a-110 documenatation <<
Text preview - extract from the document
HP Archive
This vintage Hewlett Packard document was preserved
and distributed by
www. hparchive.com
Please visit us on the web !
On-line curator: Glenn Robb
This document is for FREE distribution only!
Mixer Noise Figure
Concerns and
Measurements
Ed Cantrell
Oct. 1984
RF &.. Microwave
Measurement
Symposium
and
Exhibition
rhO- HEWLETT
~~ PACKARD
www.HPARCHIVE.com
Why Is Noise Important?
Receiver
System
Small Imperfect Signal Noisier
Signal Device
or
System
Noise limits the detection of weak signals. As a signal is passed through a device or system, noise is added, thus
degrading the signal to noise ratio. Noise figure is a measure of this degradation.
1
www.HPARCHIVE.com
Noise Figure Definition
Total Output Noise Power
F
Output Noise Power Due To Input Noise @ 290K
kTsB ~ No Na + kTsBG
r-----O_---4!Na~>------o=
..> V"
.. Zs @ Ts
..:
-==-
Na + kTsBG
F
kTsBG Ts 290K
FdB 10 log F
Noise figure is a measure of signal to noise ratio degradation of any device or system that has at least one input
and one output. It applies to systems as well as components of the system.
2
www.HPARCHIVE.com
Why Is Mixer Noise Figure Important?
◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo