PMB2208 データシートの表示（PDF） - Infineon Technologies

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PMB2208

Mixer and IF Vector Modulator

Infineon Technologies 

Confidential

PMB 2208

preliminary

Reference

5.2 S-Parameters and Input/Output Impedances

The S-parameters provided in this section are based on measurements at the supply

voltage of VCC = 3.6V. Via the internal bias tees of the NWA the capacitive coupling is

done and the open collector pins are connected to VCC.

The S-parameters have to be considered as application hints.

Table 5-4

Test

RF-Input impedance

IF-Input impedance

MO-Output impedance

Frequency

[MHz]

50 - 2500

50 - 2500

50 - 2500

Port 1

RF

IF

MO

Port 2

RFX

IFX

MOX

Output levels

-5 dBm

-30 dBm

-30 dBm

The input/output impedances are calculated from these parameters. The

impedances are given as equivalent circuit with lumped elements for differential

and single ended in-/outputs.

As equivalent circuit for these in-/outputs a resistor Rp parallel to a capacitance

Cp is derived:

Rpd

Cpd

differential

single

ended

Rps

Cps

S_Parameter.wmf

The IF-Input impedance is given as a equivalent circuit of a resistor Rs serial to

a inductivity Ls:

Rsd

Lsd

differential

Rss

Lss

single

ended

S_Parameter_2.wmf

Wireless Components

5-7

Specification, August 1999

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