l o w n o i s e a m p l i f i e r s ( c o n t . ) c r y o g e n i c a p p l i c a t i o n s m i t e q ? s j s s e r i e s a m p l i f i e r s o f f e r t h e l o w e s t n o i s e f i g u r e s a v a i l a b l e i n t h e i n d u s t r y . a s s u c h , t h e r e i s a g r e a t d e m a n d t o u t i l i z e t h e s e i n c r y o g e n i c a l l y c o o l e d s e t u p s f o r r e s e a r c h a p p l i c a t i o n s . t h e f o l l o w i n g l i s t i n g s c o v e r a b r i e f o v e r v i e w o f s o m e o f t h e p e r f o r m a n c e s t h a t c a n b e e x p e c t e d f r o m o u r a m p l i f i e r s a t l i q u i d n i t r o g e n ( 7 7 k ) t e m p e r a t u r e s . g a i n n o i s e n o i s e g a i n v a r i a t i o n f i g u r e t e m p . v s w r d c p o w e r m o d e l f r e q u e n c y @ 2 3 c @ 2 3 c @ 2 3 c @ 7 7 k i n / o u t @ + 8 v o u t l i n e n u m b e r ( g h z ) ( d b , m i n . ) ( d b , m a x . ) ( d b / k ) ( k , m a x . ) @ 2 3 c ( m a , n o m . ) d r a w i n g j s 2 - 0 0 1 0 2 0 - 0 5 0 - c r 0 . 1 C 2 2 7 1 0 . 5 / 3 5 1 5 2 : 1 2 5 0 d j s 2 - 0 1 0 0 2 0 - 0 3 5 - c r 1 C 2 2 8 1 0 . 3 5 / 2 5 1 0 2 : 1 2 5 0 d j s 2 - 0 2 0 0 4 0 - 0 4 0 - c r 2 C 4 2 8 1 0 . 3 5 / 2 5 1 0 2 : 1 2 5 0 d j s 2 - 0 2 0 0 8 0 - 0 8 0 - c r 2 C 8 2 2 1 0 . 8 / 6 0 4 5 2 : 1 2 5 0 b j s 4 - 0 6 0 1 8 0 - 1 5 0 - c r 6 C 1 8 3 1 1 . 5 1 . 5 / 1 2 0 5 0 2 : 1 2 0 0 b j s d 4 - 1 8 0 0 4 0 - 3 0 0 - c r 1 8 C 4 0 2 4 2 . 5 3 / 2 9 0 1 7 0 2 . 5 : 1 2 0 0 b c r y o g e n i c a l l y c o o l a b l e l o w - n o i s e a m p l i f i e r s j s 2 - 0 1 3 5 0 1 4 5 - 0 4 - c r j s d 4 - 1 8 0 0 4 0 - 3 0 0 - c r 1 0 0 d a v i d s d r i v e , h a u p p a u g e , n y 1 1 7 8 8 t e l . : ( 6 3 1 ) 4 3 9 - 9 4 7 4 ? f a x : ( 6 3 1 ) 4 3 5 - 7 4 7 0 / 4 3 6 - 7 4 3 0 w w w . m i t e q . c o m 1.35 1.37 1.39 1.41 1.43 1.45 43
39
35
frequency (ghz)
gain and noise figure g a i n ( d b ) r e t u r n l o s s ( d b ) n o i s e f i g u r e ( d b ) 1.35 1.37 1.39 1.41 1.43 1.45 0
-10
-20
-30
-40 frequency (ghz)
input/output return loss
.4
.3
.2
output input at 23 c 1.35 1.37 1.39 1.41 1.43 1.45 43
39 35
frequency (ghz)
gain and noise figure g a i n ( d b ) r e t u r n l o s s ( d b ) n o i s e f i g u r e ( d b ) 1.35 1.37 1.39 1.41 1.43 1.45 0
-10
-20
-30
-40 frequency (ghz)
input/output return loss
.2
.1
0
output input at -196 c (77 k) gain noise figure gain noise figure
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