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Author Topic: yig filter bandwidth control?  (Read 1956 times)

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Offline CopperConeTopic starter

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yig filter bandwidth control?
« on: June 12, 2017, 07:36:47 am »
is a yig filter a fixed Q or can you control the passband?
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Offline cj

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Re: yig filter bandwidth control?
« Reply #1 on: June 12, 2017, 10:03:25 am »
I've never seen a yig filter with adjustable bandwidth.
AFAIK only frequency is adjustable.

CJ
« Last Edit: June 13, 2017, 05:21:50 am by cj »
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Offline CopperConeTopic starter

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Re: yig filter bandwidth control?
« Reply #2 on: June 13, 2017, 05:12:54 am »
this agrees with my observations. and understanding of the device.
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Offline hendorog

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Re: yig filter bandwidth control?
« Reply #3 on: June 13, 2017, 10:31:03 pm »
Google found this patent from 1969 which used varactors to tune the bandwidth:
https://www.google.com/patents/US3435385

Perhaps they do exist...
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Offline HarryGT

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Re: yig filter bandwidth control?
« Reply #4 on: June 24, 2017, 08:22:26 pm »
Is this a general question, or are you interested in variable Q YTOs?

I would be interested if you happen to come across some. Apart from that post above, I have never seen a YTO with tunable Q.
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