G
G Patel
Guest
Does higher OIP3/IIP3 mean more linearity?
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T
Tim Wescott
Guest
On 06/12/2010 04:07 PM, G Patel wrote:
Equate IP3 with linearity, and see manufacturers start making crappy
amplifiers with great IP3 specs.
--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
Probably. In general. Maybe.Does higher OIP3/IIP3 mean more linearity?
Equate IP3 with linearity, and see manufacturers start making crappy
amplifiers with great IP3 specs.
--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
J
j
Guest
On Jun 12, 6:00 pm, Tim Wescott <t...@seemywebsite.now> wrote:
not sure what tim is trying to say ... but yes OIP3 is the accepted
linearity spec for RF amps. drawing conclusions about spectral
regrowth with digital signals can be a challenge sometimes, but for
sine signals it is a direct correlation to linearity.
i've experienced vendors who use OIP3 in non 50 ohm systems as an
attempt to make their spec's look better. a/d drive amps are a
particular example.
jdc
On 06/12/2010 04:07 PM, G Patel wrote:
Does higher OIP3/IIP3 mean more linearity?
Probably. In general. Maybe.
Equate IP3 with linearity, and see manufacturers start making crappy
amplifiers with great IP3 specs.
--
Tim Wescott
Control system and signal processing consultingwww.wescottdesign.com
not sure what tim is trying to say ... but yes OIP3 is the accepted
linearity spec for RF amps. drawing conclusions about spectral
regrowth with digital signals can be a challenge sometimes, but for
sine signals it is a direct correlation to linearity.
i've experienced vendors who use OIP3 in non 50 ohm systems as an
attempt to make their spec's look better. a/d drive amps are a
particular example.
jdc
T
Tim Wescott
Guest
On 06/14/2010 10:52 AM, j wrote:
sense)" etc., etc.
-- either 3IM with multiple input tones, or 5IM, I can't remember which.
And I don't know if they still do, or if anyone cares in this digital age.
--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
I meant "Apply that specification outside of radio (where it makesOn Jun 12, 6:00 pm, Tim Wescott<t...@seemywebsite.now> wrote:
On 06/12/2010 04:07 PM, G Patel wrote:
Does higher OIP3/IIP3 mean more linearity?
Probably. In general. Maybe.
Equate IP3 with linearity, and see manufacturers start making crappy
amplifiers with great IP3 specs.
--
Tim Wescott
Control system and signal processing consultingwww.wescottdesign.com
not sure what tim is trying to say ... but yes OIP3 is the accepted
linearity spec for RF amps. drawing conclusions about spectral
regrowth with digital signals can be a challenge sometimes, but for
sine signals it is a direct correlation to linearity.
sense)" etc., etc.
For a while Motorola was specifying their CATV amps in some unusual wayi've experienced vendors who use OIP3 in non 50 ohm systems as an
attempt to make their spec's look better. a/d drive amps are a
particular example.
-- either 3IM with multiple input tones, or 5IM, I can't remember which.
And I don't know if they still do, or if anyone cares in this digital age.
--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com