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toonafishy
Joined: 18 Jun 2002
Posts: 416
Helped: 17
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 25 Jul 2002 20:42 1:1 transformers |
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| I need some precision 1:1 rf transformenrs for PCB mounting. Freq range is 950MHz to 2150 MHz. I know I can buy cheapies such as the M*A/C*O*N E*T*C*1-1-13 but I need better phase matching over the frequency range. Anybody help me out here?
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VSWR
Joined: 07 Feb 2002
Posts: 618
Helped: 51
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| 26 Jul 2002 1:12 Re: 1:1 transformers |
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Try http://www.minicircuits.com
| toonafishy wrote: |
| I need some precision 1:1 rf transformenrs for PCB mounting. Freq range is 950MHz to 2150 MHz. I know I can buy cheapies such as the M*A/C*O*N E*T*C*1-1-13 but I need better phase matching over the frequency range. Anybody help me out here? |
Last edited by VSWR on 10 Sep 2005 22:52; edited 1 time in total |
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ynhe
Joined: 28 May 2001
Posts: 294
Helped: 4
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| 26 Jul 2002 4:37 1:1 rf transformenrs |
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Hi
Try
http://www.pulseeng.com/
http://www.toko.com/passives/index.html
ynhe
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toonafishy
Joined: 18 Jun 2002
Posts: 416
Helped: 17
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| 26 Jul 2002 20:17 |
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| thanks! I've already tried these sources. the problem is that the phase balance of these transformers is very poor at the upper end of their frequency range. It can be as bad as 20 degrees off! I'll keep trying but thanks for your suggestions
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BigBoss
Joined: 17 Nov 2001
Posts: 868
Helped: 41
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| 26 Jul 2002 23:29 |
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Go to www.epcos.com
There are few boradband transformers that may work up to 2500MHz.
Regards ,
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flatulent
Joined: 19 Jul 2002
Posts: 4860
Helped: 288
Location: Middle Earth
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| 27 Jul 2002 5:10 if cost is no object |
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| If cost is no object, there are companies that custom make transformers to your specifications. Twenty years ago Lorch was one of them. Some of the microwave magazines have buyers directories which may be useful for you.
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