20W PA Power Amplifier For COFDM Wireless Video Transmitter DVB-T2 signal sender

20W PA Power Amplifier For COFDM Wireless Video Transmitter DVB-T2 signal sender specification

Test items	Indicator requirements
Tần số hoạt động (MHz)	510±15
công suất đầu ra(W)	20
In-band group delay (ns)	≤50
Nhận được(dB)	58±1.0
Mức đầu vào (dBm)	-15±1
In-band fluctuation (dB)	≤1.0 (peak-to-peak value)
Gain change (-20～+70℃) (dB)	≤±1.0
VSWR	≤1.35
Band shoulder ratio (dBc)	≤-35
power requirements	≤＋28 Vdc 20W/3.0A
Nhiệt độ làm việc	-25～+65℃
Giao diện RF	SMA-50KFD
Module volume (mm)	178×91×20

Tổng quan
This 20W power amplifier module is designed for long-range COFDM/DVB-T2 wireless video transmission systems. It provides a stable, high-gain RF boost for airborne and ground transmitters, enabling reliable HD video uplinks over extended line-of-sight ranges. The unit is compact, gồ ghề, and temperature-hardened for field deployment on UAVs, xe cộ, towers, and portable base stations.

Các tính năng chính
• 20 W continuous RF output suitable for long-range uplink applications.
• Precise gain control: 58 ± 1.0 dB gain for predictable link budgets.
• Low in-band group delay (≤ 50 ns) for minimal video distortion and lip-sync issues.
• Tight in-band flatness (≤ 1.0 dB p-p) for consistent modulation fidelity across the band.
• Excellent VSWR (≤ 1.35) and band shoulder ratio (≤ −35 dBc) to protect the amplifier and minimize spurious emissions.
• Wide operating temperature: −25 °C to +65 °C for outdoor/vehicle use.
• Compact form factor: 178 × 91 × 20 mm — suitable for integration into small payload bays.
• SMA-50KFD RF interface for easy connection to standard coax/antenna systems.
• Low input level requirement: −15 ± 1 dBm.
• Power: accepts up to +28 VDC; typical current for 20W output ~3.0 A.

Technical specifications (test items / indicator requirements)
• Operating frequency (MHz): 510 ± 15
• Output power (W): 20
• In-band group delay (ns): ≤ 50
• Gain (dB): 58 ± 1.0
• Input level (dBm): −15 ± 1
• In-band fluctuation (dB): ≤ 1.0 (peak-to-peak)
• Gain change (−20 to +70 °C) (dB): ≤ ±1.0
• VSWR: ≤ 1.35
• Band shoulder ratio (dBc): ≤ −35
• Power requirements: ≤ +28 VDC, 20W / 3.0 Một
• Working temperature: −25 to +65 °C
• RF interface: SMA-50KFD
• Module volume (mm): 178 × 91 × 20

Recommended applications
• UAV/Drone HD video uplink for commercial and industrial inspection.
• Multi-node COFDM networks (airborne transmitters to ground receiver).
• Mobile command posts, temporary surveillance stations, and tactical deployments.
• Any DVB-T2 / COFDM based HD video transmission that requires a compact high-power RF stage.

Tích hợp & installation notes
• Ensure adequate RF cabling and a properly matched antenna to maintain VSWR ≤ 1.35.
• Provide stable +28 VDC power with sufficient current headroom (recommend power supply rated ≥ 4 A to allow margin for turn-on/inrush).
• Mount on a thermally conductive surface or provide airflow; although temperature spec is wide, sustained high-power operation benefits from good thermal management.
• Use appropriate RF filtering and licensing/coordination in your region for 510 ± 15 Hoạt động MHz.
• For multi-transmitter networks, coordinate frequency plans and time/multiplexing to avoid co-channel interference.

Ordering & options
• Standard module as described.
• Optional: integrated RF connector variants, custom frequency ranges, or ruggedized enclosure.
• Factory test report and calibration available on request.

Contact us with your system diagram (ăng-ten, cable length, receiver sensitivity and encoder bitrate), and we will calculate link budgets and recommend an optimized configuration for single or multi-node deployments.