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Summary
| Description |
English: 8-12 GHz tunnel diode amplifier manufactured by Aertech, used in aerospace applications. This is a two-stage amplifier. Each stage consists of a reflection amplifier made of a biased negative resistance tunnel diode and a circulator, a three-port ferrite device that separates the output signal from the input, and matching networks. The input signal to each device is applied to port 1 at bottom of its heat sink, and is transferred to port 2 at right, connected to the tunnel diode mounted in the heat sink. The output from the tunnel diode emerges from port 3 at the top of the device. The circulator provides about 20dB isolation of the output from the input, so the gain of each stage must be limited below this value to prevent feedback, requiring 2 or more stages to achieve significant amplification. More information on these amplifiers is on Brooke Clarks Aertech website |
| Date | 21 February 2009 Zen-in (talk) 22 February 2009 (original upload date) |
| Source |
Digital photo created by Zen-in . |
| Author | Zen-in at English Wikipedia |
| Other versions | Wiki link to other versions if they exist within the Wikimedia Commons (e.g. a black and white version of a color image) |
Licensing
Zen-in at the English Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
  
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
| Attribution: Zen-in at the English Wikipedia | ||
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| This licensing tag was added to this file as part of the GFDL licensing update. |
Original upload log
Transferred from en.wikipedia to Commons by Methecooldude using CommonsHelper on Labs.
The original description page was here. All following user names refer to en.wikipedia.
- 2009-02-22 03:26 Zen-in 1000×750× (172760 bytes) {{Information |Description = 8-12 GHz Tunnel Diode amplifier |Source = Digital photo created by [[User:Zen-in|Zen-in]] |Date = 21. Feb. 2009 ~~~~ |Permission = {{GFDL-self}} |other_versions = Wiki link to other versions if they exist within the Wikimedia
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:16, 19 January 2012 | | 1,000 × 750 (169 KB) | Upload Bot (Rich Smith) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|8-12 GHz Tunnel Diode amplifier}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia]; tran |
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