แอมพลิฟายเออร์พลังงาน PA สำหรับ DVB-T COFDM TX Trans

pa power amplifier

แอมพลิฟายเออร์พลังงาน PA สำหรับ DVB-T COFDM TX Trans

โมดูลเครื่องขยายกำลัง pa รับรู้เอาต์พุตการขยายกำลังของสัญญาณ RF. When input voltage is 12V, เชื่อมต่อกับบอร์ดมอดูเลต COFDM, output power can be up to 1W (+30dBm)

คุณสมบัติ

1. คลื่นความถี่ในการทำงาน: 300MHz~360MHz (สามารถปรับความถี่ได้มากขึ้น)
2. กำไร: 45เดซิเบล
3. Pout: +33dBm (PAR=9.9dB)
4. ACPR: < -36เดซิเบล
5. IP3: +49dBm
6. รูปเสียงรบกวน: 6เดซิเบล
7. แรงดันไฟฟ้า: 12วี, output 1W (+30dBm) transmit power, power consumption is about 8.7W.
8. RF interface: SMA male thread hole

สเปค

Electrical Specifications @ +25℃，ZS = ZL = 50Ω,Vcc =12V

พารามิเตอร์	Unit	Minimum	ทั่วไป	สูงสุด
ช่วงความถี่	เมกะเฮิรตซ์	300	ไม่จำเป็น	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)	เดซิเบล		-40
Reverse Isolation	เดซิเบล		-45
รูปเสียงรบกวน	เดซิเบล		4
Efficiency(Pout=+39dBm@470MHz)	%		13.8
VSWR input			1.3:1
เอาท์พุต			2.0:1
DC Power Supply	วี	7.4	10.0	12
Supply Current (Quiescent)	mA		300.0
ขนาด			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

พารามิเตอร์	Absolute Maximum
RF Input Power	-5.0 dBm
การจ่ายแรงดัน	+14วี
อุณหภูมิในการทำงาน	-40℃ to +65℃
อุณหภูมิการเก็บรักษา	-55℃ to +100℃

ภาพรวม

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.

ของมันด้วย 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 มม. × 18.1 มม. × 0.6 มม) 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 ถึง 720 เมกะเฮิรตซ์, this amplifier can be tailored for multiple industry needs including public safety, UAV video downlinks, military reconnaissance, wireless monitoring, and industrial IoT แอปพลิเคชัน. Optional versions are available with output powers of 1W, 2W, 5W, 10W, and 15W, offering a scalable solution for different deployment requirements.

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คุณสมบัติที่สำคัญ

• Wideband Frequency Operation:

  • Supports standard working frequency band 300–360 MHz, with multiple optional models covering 450–720 MHz.

  • Custom frequency adjustments available for specialized applications.

• High Gain and Output Power:

  • Typical small-signal gain of 45 เดซิเบล, ensuring strong amplification from low input drive levels.

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

• Excellent Linearity and Spectral Purity:

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

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

• Low Noise Performance:

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

• Optimized Efficiency:

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

• กะทัดรัด & การออกแบบที่แข็งแกร่ง:

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

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

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

• Flexible Supply Range:

  • ทำงานบน 7.4V to 12V DC supply.

  • Quiescent current: 300 mA typical.

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Detailed Specifications

ข้อมูลจำเพาะทางไฟฟ้า (at +25℃, ZS = ZL = 50Ω, Vcc = 12V)

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Absolute Maximum Ratings

บันทึก: 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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แอปพลิเคชั่น

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:

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 (NLOS) 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

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

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

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

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

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คำถามที่พบบ่อย (คำถามที่พบบ่อย)

คำถามที่ 1: 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.

คำถามที่ 2: Can this amplifier be used outside the specified frequency bands?
A2: ใช่, we offer custom frequency tuning upon request. ตัวอย่างเช่น, if you require operation in 800–900 MHz or other bands, we can redesign the module accordingly.

ไตรมาสที่ 3: 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. อย่างไรก็ตาม, ผลงาน (ความเป็นเส้นตรง, ACPR) is best utilized in digital systems.

ไตรมาสที่ 4: 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.

คำถามที่ 5: Can I power the amplifier directly from a drone’s battery?
A5: ใช่, 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.

คำถามที่ 6: 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.

คำถามที่ 7: 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.

คำถามที่ 8: 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.

คำถามที่ 9: Can this amplifier work with OFDM-based communication systems other than DVB-T?
A9: ใช่. 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, การออกอากาศ, and industrial IoT fields.

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บทสรุป

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

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