用於 DVB-T COFDM TX 發射機傳輸的 PA 功率放大器 1w 2w 5w 10w 20w

功率放大器

用於 DVB-T COFDM TX 發射機傳輸的 PA 功率放大器 1w 2w 5w 10w 20w

pa功放模組實現射頻訊號的功率放大輸出. 當輸入電壓為12V時, 連接到COFDM調變板, 輸出功率可達1W (+30分貝)

特徵

1. 工作頻段: 300兆赫~360兆赫 (更多頻率可調)
2. 獲得: 45分貝
3. 噘: +33分貝 (PAR=9.9dB)
4. ACPR: < -36分貝
5. IP3: +49分貝
6. 噪音係數: 6分貝
7. 電源電壓: 12V, 輸出1W (+30分貝) 發射功率, 功耗約8.7W.
8. 射頻介面: SMA外螺紋孔

規格

電氣規格 @ +25℃，ZS=ZL=50Ω,電源電壓=12V

範圍	單元	最低限度	典型的	最大限度
頻率範圍	兆赫茲	300	選修的	360
小訊號增益	資料庫		45.0
增益平坦度 dB	資料庫		+/-0.5
輸出功率Pout@Pin=-15dBm	分貝		30.0
IP3分貝 +49	分貝		49.0
ACPR(WCDMA PAR=9.9dB)	分貝		-40
反向隔離	分貝		-45
噪音係數	分貝		4
效率(Pout=+39dBm@470MHz)	%		13.8
駐波比輸入			1.3:1
輸出			2.0:1
直流電源	V	7.4	10.0	12
電源電流 (靜止)	毫安		300.0
尺寸			35.1毫米×18.1毫米×0.6毫米

可選頻率

PA1W330 頻率300~360Mhz

PA1W470 頻率450~500Mhz

PA1W550 頻率544~564Mhz

PA1W600 頻率580~620Mhz

PA1W700 頻率680~720Mhz

絕對最大額定值

範圍	絕對最大值
射頻輸入功率	-5.0 分貝
電源電壓	+14V
工作溫度	-40℃至+65℃
儲存溫度	-55℃至+100℃

概述

這 用於 COFDM 發射機的 PA 功率放大器模組 旨在為數位視訊廣播和無線視訊傳輸應用提供穩定、高效的射頻功率放大. 此高性能放大器提供高達 +30 分貝 (1瓦) 標準12V工作電壓下, 適合與 COFDM 調變板集成, 無人機下行系統, 手提式視訊發射器, 和其他無線通訊平台.

以其 頻率覆蓋範圍廣, 可調式設計, 和最佳化的線性度, 此放大器確保可靠的訊號傳輸、低雜訊和出色的頻譜純度. 它特別適合 DVB-T COFDM 傳輸系統, 其中保持準確的調製性能和最小的相鄰通道幹擾至關重要.

該擴大機採用緊湊的外形 (35.1 毫米× 18.1 毫米× 0.6 毫米) 附 SMA 射頻接口, 可以輕鬆整合到現有的發射器硬體中. 它還具有強大的保護功能, 確保在嚴苛環境下穩定運行, 工作溫度範圍為 -40℃至+65℃.

可選頻段範圍為 300 兆赫茲鋼彈 720 兆赫茲, 該放大器可根據多種行業需求進行定制，包括 公安, 無人機影片下行, 軍事偵察, 無線監控, 和工業物聯網 應用. 可選版本的輸出功率為 1瓦, 2瓦, 5瓦, 10瓦, 和15W, 為不同的部署需求提供可擴展的解決方案.

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主要特點

• 寬頻頻率操作:

  • 支援標準工作頻段 300–360 MHz, 具有覆蓋 450–720 MHz 的多種可選型號.

  • 可針對特殊應用進行客製化頻率調整.

• 高增益和輸出功率:

  • 典型小訊號增益 45 分貝, ensuring strong amplification from low input drive levels.

  • Delivers up to +30 分貝 (1瓦) RF output power under 12V input.

• Excellent Linearity and Spectral Purity:

  • Adjacent Channel Power Ratio (ACPR) < -36 分貝, ensuring clean signal transmission with minimal interference.

  • Third-Order Intercept Point (IP3) 的 +49 分貝, supporting high linearity for COFDM modulation.

• Low Noise Performance:

  • Noise Figure of only 6 分貝, maintaining signal clarity.

• Optimized Efficiency:

  • Power consumption of approximately 8.7 瓦 at 1W output, with efficiency ~13.8%.

• 袖珍的 & 堅固的設計:

  • Small form factor: 35.1 毫米× 18.1 毫米× 0.6 毫米.

  • SMA RF interface for secure and low-loss connections.

  • Wide operating temperature range -40℃至+65℃, ensuring durability in harsh environments.

• Flexible Supply Range:

  • 運行於 7.4V to 12V DC supply.

  • Quiescent current: 300 毫安 typical.

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Detailed Specifications

電氣規格 (at +25℃, ZS=ZL=50Ω, Vcc = 12V)

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絕對最大額定值

筆記: Exceeding maximum ratings may result in permanent damage. Ensure proper heat dissipation and stable power supply regulation when operating at high output power levels.

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Optional Frequency Models

The amplifier can be provided in different frequency configurations depending on customer requirements:

• PA1W330: 300–360 MHz

• PA1W470: 450–500 MHz

• PA1W550: 544–564 MHz

• PA1W600: 580–620 MHz

• PA1W700: 680–720 MHz

Customized frequency bands outside this range can be developed upon request.

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應用領域

這 COFDM PA Power Amplifier is widely applicable in advanced RF transmission systems where high linearity, stable output, and clean spectrum are essential. 典型應用包括:

1. UAV Wireless Video Transmission

   • Enables long-range, low-latency video downlinks for drones.

   • Compatible with COFDM-based digital transmitters for reliable non-line-of-sight (非視距) video delivery.

2. Public Security and Law Enforcement

   • Used in mobile surveillance units, body-worn transmitters, and tactical wireless systems.

   • Provides stable communication links in urban and rural deployment scenarios.

3. Broadcasting and Media Transmission

   • Supports DVB-T/COFDM standard, making it ideal for digital TV uplink and portable transmission setups.

4. Military and Defense Applications

   • Integrated into reconnaissance systems, remote-controlled unmanned vehicles (UGVs/USVs), and secure communication links.

5. Industrial IoT and Wireless Control

   • Provides robust long-range connectivity for industrial monitoring and remote control systems.

6. Emergency Response and Firefighting

   • Ensures reliable video and data transmission during rescue operations in complex terrains.

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Integration Guidelines

• 電源: Operate within 7.4–12 V for optimal performance. Ensure supply ripple is minimized to reduce spurious emissions.

• 冷卻: Use proper heat sinking when operating at continuous high output power to maintain stability.

• 射頻介面: Always terminate unused RF ports with 50Ω load to prevent reflections and damage.

• 調製: Best suited for COFDM modulation schemes such as DVB-T, with excellent performance in adjacent channel environments.

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常見問題解答 (常問問題)

Q1: What is the maximum output power of this amplifier?
A1: The standard module delivers +30 分貝 (1瓦) of RF power under 12V supply. Higher power versions (2瓦, 5瓦, 10瓦, 和15W) are also available for extended range requirements.

Q2: Can this amplifier be used outside the specified frequency bands?
A2: 是的, we offer custom frequency tuning upon request. 例如, if you require operation in 800–900 MHz or other bands, we can redesign the module accordingly.

第三季: 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. 然而, 表現 (線性度, ACPR) is best utilized in digital systems.

第四季: 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: 是的, 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 分貝 (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, 2瓦, 5瓦, 10瓦, 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: 是的. 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, 消防, UAV video transmission, defense reconnaissance, 廣播, 和工業物聯網 fields.

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結論

這 PA Power Amplifier COFDM module is a robust, high-performance RF amplifier optimized for modern digital wireless transmission needs. 它是 high linearity, low noise figure, wide frequency coverage, and optional scalable power outputs make it a versatile choice for UAVs, 廣播, 防禦, and emergency communication systems.

Whether deployed in 1W lightweight UAV payloads or scaled up to 15W ground-based transmitters, the amplifier ensures reliable, 高效率的, and secure transmission of COFDM signals across diverse environments.