鈥?/div>
Biasing Control Extends Battery Time
Simple Input and Output Matching
Only One Single Supply Required
No High-side Switching Transistor Required
1. Description
1.1
Process
This 5-GHz power amplifier (PA) is designed using Atmel鈥檚 Silicon-Germanium (SiGe)
process and provides high efficiency.
1.2
Circuitry
The PA, ATR7040, consists of a three-stage amplifier with a typical output power of
25 dBm. The output stage was implemented using an open-collector structure. Power
up, power down, and output level are controlled at bias control pin 6 (V
ctl
).
4868C鈥揇ECT鈥?5/06