Wireless Amplifier Cradle Kit (801213) (quantum-wireless.com)
LOW NOISE AMPLIFIER AND POWER AMPLIFIER SPECIFICATIONS · •Wireless Transmission suffers from the...
Transcript of LOW NOISE AMPLIFIER AND POWER AMPLIFIER SPECIFICATIONS · •Wireless Transmission suffers from the...
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LOW NOISE AMPLIFIER AND POWER AMPLIFIERSPECIFICATIONS
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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• Wireless Transmission suffers from the path loss (loss due to wireless medium) and also leads to failure in signal reception.
• To increase the signal power in wireless channel and to make the receiver to receive the signal with required signal power, Amplifiers are required in wireless transceivers.
• Power Amplifiers are used to increase the power of transmission signal and helps to increase the possibility to the reception.
• LNA (Low Noise Amplifier) are used in reception which is increasing the received signal power with minimum noise. That’s why this amplifier is called Low Noise Amplifier.
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
IMPORTANCE OF AMPLIFIERS
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TRANSCEIVER FRONT END
RECEIVER CIRCUIT
TRANSMITTER CIRCUIT
SIGNAL POWER
dB
PATH LOSS
GAIN
REQUIRED SIGNAL POWER
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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• Previously shown figure, explains that the Maximum power loss occurred in free space, commonly known as Free Space Loss.
• Some times the received signal power getting lower than the receiver sensitivity.
• Amplifiers provide some gain to the signal and helps to increase the signal power for receiver requirement.
• LNA (Low Noise Amplifier) is focused to maintain the required SNR level at the receiver end.
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
HOW AMPLIFIERS HELPS ?
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RECEIVER SECTIONPROPERTIES PARAMETERS CAN AFFECT THE
PROPERTIES
LINEARITY IIP3
SENSITIVITY NOISE FIGURE
SELECTIVITY FILTER CHARACTERISTICS
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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LNA PARAMETERS
• OPERATING FREQUENCY BAND
• GAIN
• NOISE FIGURE
• OUTPUT POWER 1 dB COMPRESSION POINT
• OUTPUT THIRD ORDER INTERCEPT POINT (OIP3)
• INPUT AND OUTPUT VSWR
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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LNA TAMP 960 LN+
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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PARAMETERS VS FREQUENCY
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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TYPICAL POWER AND FLAT BAND
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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POWER AMPLIFIER - HELA 10
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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PARAMETER SHOULD BE
OPERATING FRQUENCY BAND HIGH
NOISE FIGURE LOW
GAIN HIGH
DYNMIC RANGE• P1 dB• OIP3
HIGH
VSWR LOW (NEAR TO 1)
THERMAL RESISTANCE LOW
FLAT NESS LOW
LOW NOISE AMPLIFIER AND POWER AMPLIFIER
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io
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THANK YOU !!
LNA & PA
U. BHANU CHANDER M.E http://bhanuchander210.github.io