PIN diode Vector Modulators -

Fundamentals and Drive Requirements

Rev. V4

Application Note

AN3001

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4

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Model Number

Frequency Range

(MHz)

Coilcraft

P/N L1 - L4

Description of

L1 - L4

Resistor

Values

R2, R6

Thermistor

Values

R3, R7

Quality

Thermistor

P/N for R3, R7

MAMDCC0005

925 - 960 (GSM)

0603CS-68NXJBC

Inductor, 68 nH, ± 5%

270 Ohms

750 Ohms

QT0805-751K

MAMDCC0002

1930 - 1990 (PCS)

0603CS-27NXJBC

Inductor, 27 nH, ± 5%

360 Ohms

680 Ohms

QT0805-681K

SA90-0001

2040 - 2240 (UMTS)

0603CS-27NXJBC

Inductor, 27 nH, ± 5%

270 Ohms

750 Ohms

QT0805-751K

Table 2. Selection Table for Bias Inductors

Figure 4. Transfer Function of Test to Determine Reference Loss

Bias1 = 0.0V

Bias2 = 5.0V

Bias1 = 5.0V

Bias2 = 0.0V