[SI-LIST] Re: Miniature 50 Ohm delay lines for system integration?

Steven.

If your doing alot of SMA work with RF products, Weinshel/ Aeroflex make a good 
mechanical SMA phase shifter to 20Ghz. This product has <0.8db insertion loss 
to 12 Ghz and up to 225degrees shift at 20Ghz.  Maximum VSWR is 1.5.  There are 
several to choose from. 

See data sheets at:

http://www.weinschel.com/PDFILES/phase_shifters.pdf

Good luck . 

Richard Jungert

> Date: Tue, 21 Oct 2008 16:31:57 -0700
> From: steven@xxxxxxxxxxxxxxxxxxxx
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Miniature 50 Ohm delay lines for system integration?
> 
> I am looking for a low-cost, mechanical-adjustable delay line for 
> deskewing 50 Ohm signals in system integration applications. After we 
> pack 5-10 of our modular instruments into a rack-mount box, we may have 
> to deskew signals by up to 500 ps. Once the box is closed up, it 
> wouldn't require any further adjustment (under normal circumstances).
> 
> We have programmable digital delay modules (heck, we make them), but 
> they're overkill for this application, and they take too much $$, space, 
>   and power. In a perfect world I'd be looking for an inline module, 
> perhaps the size of a AAA battery, with SMA in/out, and a screw-adjust 
> for ~100s of ps of delay. We'd be passing TTL pulses with Tr of ~ 1 ns, 
> so we don't need huge bandwidth.
> 
> I googled "miniature trombone delay line" and saw lots of references to 
> this patent:
> 
> http://www.freepatentsonline.com/6831602.html
> 
> but I don't see any actual products based on it.
> 
> I suppose I could have my techs do the scope-cut-crimp-repeat dance, but 
> it'd be _so_ much easier if they could just look at a signal on a scope 
> while they turn a screw.
> 
> Does such a thing exist? Thanks!
> -- 
> Steven Kan                                (p) 310-515-5330 x24
> Pulse Research Lab                        (f) 310-515-0068
> 1234 Francisco St., Torrance, CA  90502   (c) 818-620-3062
> mailto:steven@xxxxxxxxxxxxxxxxxxxx
> http://www.pulseresearchlab.com
> Signal Buffering & Translation for Digital Design, Integration & Test
> 
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