37-40GHz Down Converter

CHR3694-QDG

Ref. : DSCHR3694-QDG – February 09

15/18

Specifications subject to change without notice

Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE

Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09

Notes

The biasing circuits of the stages of the circuit are given in the schemes below.

Vd=4V

Stage 1

Stage 2

Stage 3

150

Ω

Vgc=-2V

0V

Self-biased

Self-biased

Gain control

Self-biased

1.9k

Ω

1.9k

Ω

26

Ω

100

Ω

26

Ω

100

Ω

60

Ω

60

Ω

1.9k

Ω

9

Ω

100

Ω

21

Ω

IN

OUT

LNA

Vd=4V

Stage 1

Stage 2

Stage 3

150

Ω

Vgc=-2V

0V

Self-biased

Self-biased

Gain control

Self-biased

1.9k

Ω

1.9k

Ω

26

Ω

100

Ω

26

Ω

100

Ω

60

Ω

60

Ω

1.9k

Ω

9

Ω

100

Ω

21

Ω

IN

OUT

LNA

Vdx=4V

Stage Buffer 1

Stage

2 times multiplier

Stage Buffer 2

Vgx

Self-biased

Self-biased

1.23k

Ω

10

Ω

42

Ω

200

Ω

38

Ω

1.23k

Ω

8

Ω

57

Ω

LO IN

LO OUT

LO

Vdx=4V

Stage Buffer 1

Stage

2 times multiplier

Stage Buffer 2

Vgx

Self-biased

Self-biased

1.23k

Ω

10

Ω

42

Ω

200

Ω

38

Ω

1.23k

Ω

8

Ω

57

Ω

LO IN

LO OUT

LO

Vgm

1.2k

Ω

0.5

Ω

0.5

Ω

Vgm

1.2k

Ω

0.5

Ω

0.5

Ω