AP561
0.7-2.9 GHz WiMAX 8W Power Amplifier
Application Circuit PC Board Layout
Baseplate Configuration
Circuit Board Material: 0.0147” Rogers Ultralam 2000, single layer, 1 oz
copper,
ε
r
= 2.45, Microstrip line details: width = .043”, spacing = .050”
Notes:
1.
Please note that for reliable operation, the evaluation board will have to be mounted to a much
larger heat sink during operation and in laboratory environments to dissipate the power
consumed by the device. The use of a convection fan is also recommended in laboratory
environments.
2.
The area around the module underneath the PCB should not contain any soldermask in order to
maintain good RF grounding.
3.
For proper and safe operation in the laboratory, the power-on sequencing is recommended.
Evaluation Board Bias Procedure
Following bias procedure is recommended to ensure proper functionality of AP561 in a laboratory environment. The sequencing is not
required in the final system application.
Bias.
Vcc
Vpd
Voltage (V)
+12
+5
Turn-on Sequence:
1.
2.
3.
4.
1.
2.
3.
Attach input and output loads onto the evaluation board.
Turn on power supply Vcc = +12V.
Turn on power supply Vpd = +5V.
Turn on RF power.
Turn off RF power.
Turn off power supply Vpd = +5V.
Turn off power supply Vcc = +12V.
Turn-off Sequence:
Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc
•
Phone 1-800-951-4401
•
FAX: 408-577-6633
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 2 of 15 May 2009
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