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XM1002

34.0-46.0 GHz GaAs MMIC Image Reject Mixer

Mimix Broadband 

34.0-46.0 GHz GaAs MMIC

Image Reject Mixer

December 2005 - Rev 02-Dec-05

M1002

App Note [1] Biasing - As shown in the bonding diagram, the pHEMT mixer devices are operated using a

separate gate voltage Vg1. Set Vg1=-0.5V for optimum conversion loss performance.

App Note [2] Bias Arrangement - Each DC pad (Vg1) needs to have DC bypass capacitance (~100-200 pF) as

close to the device as possible. Additional DC bypass capacitance (~0.01 uF) is also recommended.

App Note [3] USB/LSB Selection -

LSB

USB

For Upper Side Band operation (USB):

With IF1 and IF2 connected to the

direct port (0º) and coupled port (90º)

respectively as shown in the diagram,

the USB signal will reside on the

isolated port. The input port must be

loaded with 50 ohms.

IF2

IF1

An alternate method of selection of USB or LSB:

For Lower Side Band operation (LSB):

With IF1 and IF2 connected to the

direct port (0º) and coupled port (90º)

respectively as shown in the diagram,

the LSB signal will reside on the input

port. The isolated port must be loaded

with 50 ohms.

USB

LSB

In Phase Combiner

In Phase Combiner

-90 o

-90 o

IF2

IF1

IF2

IF1

Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099

Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com

Page 7 of 8

Characteristic Data and Specifications are subject to change without notice. ©2005 Mimix Broadband, Inc.

Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept

their obligation to be compliant with U.S. Export Laws.

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