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User Manuals: COBHAM VEPA-2W RF Power Amplifier
Manuals and User Guides for COBHAM VEPA-2W RF Power Amplifier. We have
1
COBHAM VEPA-2W RF Power Amplifier manual available for free PDF download: Operation Manual
COBHAM VEPA-2W Operation Manual (21 pages)
Linear Power Amplifier
Brand:
COBHAM
| Category:
Amplifier
| Size: 2 MB
Table of Contents
Table of Contents
3
1 Cautions and Warnings
5
Electromagnetic Radiations
5
Supply Voltage and Current
5
PA ENABLE (Fast Switching)
5
RF LOAD TERMINATION (50 Ohm)Ωω
5
Heatsink
6
Rf Overdrive
6
Over Temperature Automatic Shutdown
6
Power Measurement
6
2 Absolute Max Ratings
7
3 Specifications
7
Table 1 - ABSOLUTE MAX RATINGS
7
Table 2 - General Specifications
7
Table 3 - Frequency Specific Specifications
8
4 Power Amplifier Features
9
Mode of Operations
9
High Linearity Mode (or High Mer Mode)
9
High Efficiency Mode (or Low Current Mode)
9
PA ENABLE (Fast Switching Capable)
9
Vswr, Rf Overdrive and Over-Temerature Protection Circuits
9
5 Operational Instructions
10
External Connections
10
Figure 1 - VEPA-2W PA External Connections
10
Connecting & Disconnecting the Power Amplifier
11
Application Examples
11
Basic Configuration
11
Figure 2 - PA on Small Heat-Sink with Test Cable and Isolator (Isolator Optional)
12
Vepa-2W / Vmt Combination
13
Using a Transmitter / Pa Combination
13
The Old FM Approach
13
Figure 3 - VEPA-2W PA with VMT
13
The NEW Digital Modulation Approach
14
6 Typical Power Amplifier Performances
16
GAIN @ 2W COFDM Output
16
Figure 4 - LD Band Gain
16
Figure 5 - LD Band Gain Change over Temp
16
Figure 6 - L2 Band Gain
16
Figure 7 - L2 Band Gain Change over Temp
16
Figure 8 - W7 Band Gain
16
Figure 9 - W7 Band Gain Change over Temp
16
Figure 10 - S2 Band Gain
16
Figure 11 - S2 Band Gain Change over Temp
16
Figure 14 - C2 Band Gain
17
Figure 15 - C2 Band Gain Change over Temp
17
Current @ 2W COFDM Output, 12 VDC
18
Figure 16 - LD Band Current
18
Figure 17 - L2 Band Current
18
Figure 18 - W7 Band Current
18
Figure 19 - S2 Band Current
18
Figure 20 - SK Band Current
18
Figure 21 - C2 Band Current
18
MER @ 2W COFDM Output
19
Figure 23 - L2 Band MER
19
Figure 24 - W7 Band MER
19
Figure 25 - S2 Band MER
19
Figure 26 - SK Band MER
19
Small Signal S-Parameter (High Efficiency Mode)
20
Figure 29 - L2 Band S-Parameters
20
Figure 30 - W7 Band S-Parameters
20
Figure 31 - S2 Band S-Parameters
20
Figure 32 - SK Band S-Parameters
20
Figure 33 - C2 Band S-Parameters
20
Appendix 1 - Acronyms
21
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