pa power amplifier
PA Power Amplifier for DVB-T COFDM TX Transmitter transmission 1w 2w 5w 10w 20w
The pa power amplifier module realizes the power amplification output of the RF signal. When input voltage is 12V, connect to COFDM modulation board, output power can be up to 1W (+30dBm)
Features
- Working frequency band: 300MHz~360MHz (more frequency is adjustable)
- Gain: 45dB
- Pout: +33dBm (PAR=9.9dB)
- ACPR: < -36dBc
- IP3: +49dBm
- Noise Figure: 6dB
- Supply voltage: 12V, output 1W (+30dBm) transmit power, power consumption is about 8.7W.
- RF interface: SMA male thread hole
Specification
Electrical Specifications @ +25℃，ZS = ZL = 50Ω,Vcc =12V
| Parameter | Unit | Minimum | Typical | Maximum |
| Frequency Range | MHz | 300 | Optional | 360 |
| Small Signal Gain | db | 45.0 | ||
| Gain Flatness dB | db | +/-0.5 | ||
| Output Power Pout@Pin=-15dBm | dBm | 30.0 | ||
| IP3 dBm +49 | dBm | 49.0 | ||
| ACPR(WCDMA PAR=9.9dB) | dBc | -40 | ||
| Reverse Isolation | dB | -45 | ||
| Noise Figure | dB | 4 | ||
| Efficiency(Pout=+39dBm@470MHz) | % | 13.8 | ||
| VSWR input | 1.3:1 | |||
| output | 2.0:1 | |||
| DC Power Supply | V | 7.4 | 10.0 | 12 |
| Supply Current (Quiescent) | mA | 300.0 | ||
| size | 35.1mm x 18.1mm x 0.6mm |
Optional Frequency
PA1W330 Frequency 300~360Mhz
PA1W470 Frequency 450~500Mhz
PA1W550 Frequency 544~564Mhz
PA1W600 Frequency 580~620Mhz
PA1W700 Frequency 680~720Mhz
Absolute Maximum Ratings
| Parameter | Absolute Maximum |
| RF Input Power | -5.0 dBm |
| Supply Voltage | +14V |
| Operating Temperature | -40℃ to +65℃ |
| Storage Temperature | -55℃ to +100℃ |
Overview
The PA Power Amplifier module for COFDM transmitters is designed to deliver stable and efficient RF power amplification for digital video broadcasting and wireless video transmission applications. This high-performance amplifier provides an output power level up to +30 dBm (1W) under standard 12V operation, making it suitable for integration with COFDM modulation boards, UAV downlink systems, portable video transmitters, and other wireless communication platforms.
With its broad frequency coverage, adjustable design, and optimized linearity, the amplifier ensures reliable signal transmission with low noise and excellent spectral purity. It is particularly suitable for DVB-T COFDM transmission systems, where maintaining accurate modulation performance and minimal adjacent channel interference is critical.
The amplifier adopts a compact form factor (35.1 mm × 18.1 mm × 0.6 mm) with SMA RF interfaces, making it easy to integrate into existing transmitter hardware. It also incorporates robust protection features, ensuring stable operation across demanding environments, with an operating temperature range from -40℃ to +65℃.
With selectable frequency bands ranging from 300 MHz up to 720 MHz, this amplifier can be tailored for multiple industry needs including public safety, UAV video downlinks, military reconnaissance, wireless monitoring, and industrial IoT applications. Optional versions are available with output powers of 1W, 2W, 5W, 10W, and 15W, offering a scalable solution for different deployment requirements.
Key Features
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Wideband Frequency Operation:
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Supports standard working frequency band 300–360 MHz, with multiple optional models covering 450–720 MHz.
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Custom frequency adjustments available for specialized applications.
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High Gain and Output Power:
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Typical small-signal gain of 45 dB, ensuring strong amplification from low input drive levels.
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Delivers up to +30 dBm (1W) RF output power under 12V input.
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Excellent Linearity and Spectral Purity:
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Adjacent Channel Power Ratio (ACPR) < -36 dBc, ensuring clean signal transmission with minimal interference.
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Third-Order Intercept Point (IP3) of +49 dBm, supporting high linearity for COFDM modulation.
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Low Noise Performance:
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Noise Figure of only 6 dB, maintaining signal clarity.
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Optimized Efficiency:
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Power consumption of approximately 8.7 W at 1W output, with efficiency ~13.8%.
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Compact & Robust Design:
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Small form factor: 35.1 mm × 18.1 mm × 0.6 mm.
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SMA RF interface for secure and low-loss connections.
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Wide operating temperature range -40℃ to +65℃, ensuring durability in harsh environments.
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Flexible Supply Range:
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Operates on 7.4V to 12V DC supply.
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Quiescent current: 300 mA typical.
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Detailed Specifications
Electrical Specifications (at +25℃, ZS = ZL = 50Ω, Vcc = 12V)
| Parameter | Unit | Min | Typical | Max |
|---|---|---|---|---|
| Frequency Range | MHz | 300 | — | 360 |
| Small Signal Gain | dB | — | 45.0 | — |
| Gain Flatness | dB | — | ±0.5 | — |
| Output Power (Pin = -15 dBm) | dBm | — | +30 | — |
| IP3 (Third Order Intercept) | dBm | — | +49 | — |
| ACPR (WCDMA, PAR=9.9 dB) | dBc | — | -40 | — |
| Reverse Isolation | dB | — | -45 | — |
| Noise Figure | dB | — | 4 | — |
| Efficiency (@ Pout = +39 dBm, 470 MHz) | % | — | 13.8 | — |
| Input VSWR | — | — | 1.3:1 | — |
| Output VSWR | — | — | 2.0:1 | — |
| DC Supply Voltage | V | 7.4 | 10.0 | 12.0 |
| Supply Current (Quiescent) | mA | — | 300 | — |
| Size | mm | — | 35.1 × 18.1 × 0.6 | — |
Absolute Maximum Ratings
| Parameter | Absolute Maximum |
|---|---|
| RF Input Power | -5 dBm |
| Supply Voltage | +14 V |
| Operating Temperature | -40℃ to +65℃ |
| Storage Temperature | -55℃ to +100℃ |
Note: Exceeding maximum ratings may result in permanent damage. Ensure proper heat dissipation and stable power supply regulation when operating at high output power levels.
Optional Frequency Models
The amplifier can be provided in different frequency configurations depending on customer requirements:
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PA1W330: 300–360 MHz
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PA1W470: 450–500 MHz
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PA1W550: 544–564 MHz
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PA1W600: 580–620 MHz
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PA1W700: 680–720 MHz
Customized frequency bands outside this range can be developed upon request.
Applications
The COFDM PA Power Amplifier is widely applicable in advanced RF transmission systems where high linearity, stable output, and clean spectrum are essential. Typical applications include:
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UAV Wireless Video Transmission
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Enables long-range, low-latency video downlinks for drones.
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Compatible with COFDM-based digital transmitters for reliable non-line-of-sight (NLOS) video delivery.
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Public Security and Law Enforcement
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Used in mobile surveillance units, body-worn transmitters, and tactical wireless systems.
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Provides stable communication links in urban and rural deployment scenarios.
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Broadcasting and Media Transmission
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Supports DVB-T/COFDM standard, making it ideal for digital TV uplink and portable transmission setups.
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Military and Defense Applications
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Integrated into reconnaissance systems, remote-controlled unmanned vehicles (UGVs/USVs), and secure communication links.
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Industrial IoT and Wireless Control
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Provides robust long-range connectivity for industrial monitoring and remote control systems.
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Emergency Response and Firefighting
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Ensures reliable video and data transmission during rescue operations in complex terrains.
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Integration Guidelines
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Power Supply: Operate within 7.4–12 V for optimal performance. Ensure supply ripple is minimized to reduce spurious emissions.
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Cooling: Use proper heat sinking when operating at continuous high output power to maintain stability.
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RF Interface: Always terminate unused RF ports with 50Ω load to prevent reflections and damage.
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Modulation: Best suited for COFDM modulation schemes such as DVB-T, with excellent performance in adjacent channel environments.
Frequently Asked Questions (FAQ)
Q1: What is the maximum output power of this amplifier?
A1: The standard module delivers +30 dBm (1W) of RF power under 12V supply. Higher power versions (2W, 5W, 10W, and 15W) are also available for extended range requirements.
Q2: Can this amplifier be used outside the specified frequency bands?
A2: Yes, we offer custom frequency tuning upon request. For example, if you require operation in 800–900 MHz or other bands, we can redesign the module accordingly.
Q3: Is this amplifier suitable for analog video transmission?
A3: While optimized for COFDM digital modulation, the amplifier can also be used for analog FM or AM-based video transmitters. However, performance (linearity, ACPR) is best utilized in digital systems.
Q4: How does the amplifier handle thermal dissipation?
A4: The module is designed for efficient heat transfer, but when operating at high output levels continuously, it is recommended to mount the module on a heat sink or within a ventilated enclosure.
Q5: Can I power the amplifier directly from a drone’s battery?
A5: Yes, the amplifier supports a supply range of 7.4V to 12V, making it compatible with 2S–3S Li-ion/LiPo battery packs typically used in UAVs.
Q6: What kind of connectors are provided?
A6: The amplifier uses SMA male thread hole connectors for RF input and output, ensuring secure and low-loss connections.
Q7: Does the amplifier have built-in protection against overdrive?
A7: Input RF drive should not exceed -5 dBm (absolute max). It is strongly recommended to limit input power and avoid overdrive conditions. External protection circuits can be added if necessary.
Q8: What is the difference between the 1W, 2W, 5W, 10W, and 15W versions?
A8: The differences lie mainly in the power amplification stage. Higher power versions require additional thermal management and may have slightly larger form factors, but all share the same integration concept.
Q9: Can this amplifier work with OFDM-based communication systems other than DVB-T?
A9: Yes. It is suitable for any OFDM/COFDM system, including LTE, custom digital video, and wireless data transmission schemes, provided the operating frequency is matched.
Q10: What industries are currently using this module?
A10: Our amplifiers are widely used in public security, firefighting, UAV video transmission, defense reconnaissance, broadcasting, and industrial IoT fields.
Conclusion
The PA Power Amplifier COFDM module is a robust, high-performance RF amplifier optimized for modern digital wireless transmission needs. Its high linearity, low noise figure, wide frequency coverage, and optional scalable power outputs make it a versatile choice for UAVs, broadcasting, defense, and emergency communication systems.
Whether deployed in 1W lightweight UAV payloads or scaled up to 15W ground-based transmitters, the amplifier ensures reliable, efficient, and secure transmission of COFDM signals across diverse environments.
isdb-t.com_buyer –
This PA Power Amplifier has completely transformed my DVB-T/COFDM transmission setup! I opted for the 10W version, and the boost in signal strength and clarity is nothing short of remarkable. The installation was straightforward, and the build quality feels exceptionally robust. I’ve noticed a dramatic improvement in my transmission range and signal penetration, especially in challenging environments where I previously experienced dropouts. The amplifier operates with impressive efficiency, remaining stable and relatively cool even during extended use. It has added a professional level of reliability and performance to my broadcasts that I was missing before. For anyone serious about enhancing their wireless video transmission system, this amplifier is an outstanding investment and delivers exceptional value for its price. Highly recommended for achieving consistent, high-quality results!