Name: 13 - 15 GHz 4W power amplifier
Brand: TriQuint
SKU: TGA8659
Price: 69.00 EUR
Availability: InStock

Overview
Documents
Compliance

TGA8659-FL is a high-performance Ku-band power amplifier designed for transmit applications in the 13–15 GHz range, with operation commonly extended up to 13–17 GHz depending on design and matching conditions. Delivering approximately 4 W of RF output power with high gain, it is well suited for professional microwave and satellite communication systems.

Frequency range: 13–15 GHz (extended 13–17 GHz)
Small-signal gain: >25 dB
Typical saturated output power (Psat): 36 dBm @ 14.5 GHz (CW)
Typical PAE: 30% @ Psat
Typical bias: 7 V drain supply, 1.3 A quiescent current

Engineering note: Output power in watts can be derived from dBm using W = 10^((dBm − 30)/10). For reference, 36 dBm corresponds to approximately 4 W.

Key Advantages

High gain architecture (>25 dB) simplifies RF chain design and may reduce the need for additional driver stages.
Solid output capability in Ku-band with typical 36 dBm CW power at 14.5 GHz.
Good linearity performance with typical OIP3 around 41 dBm (measured 5 dB below Psat at 14.5 GHz).
Flanged package designed for reliable mechanical mounting and effective thermal management.

Typical Applications

Ku-band VSAT terminals (final stage or high-power driver)
Point-to-point microwave radio links
Satellite uplink transmit modules
Test and measurement systems operating in Ku-band

Main Electrical Characteristics (Typical Values)

Operating frequency	13–15 GHz (extended operation 13–17 GHz)
Small-signal gain	>25 dB
Saturated output power (CW)	36 dBm @ 14.5 GHz
Output power @ 1 dB compression (P1dB)	35 dBm @ 14.5 GHz
Power Added Efficiency (PAE)	30% @ Psat
OIP3 (5 dB back-off from Psat)	41 dBm @ 14.5 GHz
Input/Output return loss (typ.)	10 dB
Typical operating bias	Vd = 7 V, Idq ≈ 1.3 A
Thermal integration	Requires proper heat sinking and low thermal resistance interface for continuous-wave operation.

Design & Integration Considerations

Biasing and Startup

For reliable operation, controlled bias sequencing and current limiting during startup are recommended. Proper decoupling close to the device terminals is essential to ensure stability in Ku-band operation.

RF Layout Practices

At frequencies above 13 GHz, PCB layout and grounding strategy significantly affect performance. Use short transmission paths, continuous ground planes, optimized matching networks, and carefully placed RF bypass capacitors. Evaluation boards can accelerate validation and reduce integration risk.