>
>In message <19980930104557.AAA9776@[209.239.238.83]>, Rich Measures
><measures@vc.net> writes
>>
>>>
>>>If you have a transceiver with a 3rd transmitter IMD -25db below pep, and
>>>the amplifiers third order imd is -40db, what is the final 3rd imd figure
>>>for the combined transceiver and linear?
>>>
>>Pretty close to -25db
>>
>>>Secondly in the case ab2 grounded grid, when the driver contributes to feed
>>>through power what is the final figure when the driver has a poorer IMD.
>>
>>the poorer source is still the prime determiner
>>
>
>If the drive is 10dB cleaner than the output stage, the worst case
>effect is to make the output about 3dB worse than the output stage. If
>the driver and output have the same IMD levels, the worst case is 6 dB
>worse than either. The IMD levels add up in voltage, not power.
>
thanks, Steve
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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