AMMP-6530 datasheet(7/10 Pages) HP

7 / 10 page

Biasing and Operation

The recommended DC bias

condition for optimum

performance, and reliability is

Vg = -1 volts. There is no current

consumption for the gate biasing

because the FET mixer was

designed for passive operation.

For down conversion, the

AMMP-6530 may be configured in

a low loss or high linearity

application. In a low loss configu-

ration, the LO is applied through

the drain (Pin8, power divider

side). In this configuration, the

AMMP-6530 is a “drain pumped

mixer”. For higher linearity

applications, the LO is applied

through the gate (Pin4, Lange

coupler side). In this configura-

tion, the AMMP-6530 is a “gate

pumped mixer” (or Resistive

mixer). The mixer is also suitable

for up-conversion applications

under the gate pumped mixer

operation shown on page 3.

Please note that the image

rejection and isolation perfor-

mance is dependent on the

selection of the low frequency

quadrature hybrid. The perfor-

mance specification of the low

frequency quadrature hybrid as

well as the phase balance and

VSWR of the interface to the

AMMP-6530 will affect the overall

mixer performance.

Figure 21. Simplified MMIC Schematic.

Figure 22. Demonstration Board (available upon request).

IF1

IF2

RF/LO

LO/RF

IF1

IF2

gate

Gnd

IF1

IF2

RF/LO

LO/RF

AMMP-6530 Datasheet(PDF) 7 Page - Agilent(Hewlett-Packard)

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