PMB2331 데이터 시트보기 (PDF) - Siemens AG

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PMB2331

ICs for Communications MIXER

Siemens AG 

PMB 2331

Figure 5

Test Circuit 2

S-Parameter Measurement of Mixer

S11, S12, S21, S2

Test

LO-Input impedance

Mi-Input impedance

MO-Output impedance

Test Frequency [GHz]

.. - 3.0

.. - 3.0

.. - 3.0

Pin X

4

7

1

Pin Y

5

8

2

The S-Parameters are tested at the indicated frequency and the equivalent parallel or

series circuit is calculated on this base.

Via the NWA the capacitive coupling is done and the open collector pins are connected

to VCC. The output levels at port1 and 2 for pin x and y are – 30 dbm for MI and MO-

impedances and – 5 dbm for the LO impedance. S-Parameters have to be considered

as design hints and are measured with SIEMENS testboards (RT/Duroid 5880 Teflon,

ε = 2.2).

Semiconductor Group

13

02.96

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