Voltage-Controlled Oscillator (VCO) @j and Buffer Amplifier @

The VCO output frequency with the tuning voltage set to -14.2 V should be 380 MHz. Typical voltage levels for the VCO are as shown in Table 1.

Table 1. Typical VCO Voltage Levels

LO Output Amplifier @

Table 2. Typical LO Output Amplifier Voltage Levels

A7A4A2 Voltage Levels

Q5 Q2 Ql

Emitter - 6 . 9 - 6 . 7 - 6 . 7

Base - 6 . 2 - 6 . 2 - 6 . 2

Collector -0.5 0.0 0.0

LO Amplifier @ and M/N Output Amplifier @

Table 3. Typical LO and M/N Output Amplifier Voltage Levels

A7A4A2 Voltage Levels

 

Q6

Q7

Q3

Q4

 

Emitter

- 6 . 7

- 3 . 1

- 4 . 5

- 5 . 2

 

Base

- 6 . 2

- 2 . 4

- 3 . 8

- 4 . 5

 

Collector

- 2 . 4

- 1 . 1

0.0

- 2 . 3

 

 

 

 

 

 

 

A7A4 3