PA усилвател за мощност за DVB-T COFDM TX предаване на предавателя 1W 2W 5W 10W 20W

pa усилвател на мощност

PA усилвател за мощност за DVB-T COFDM TX предаване на предавателя 1W 2W 5W 10W 20W

Модулът усилвател на мощност pa реализира изхода за усилване на мощността на RF сигнала. Когато входното напрежение е 12V, свържете се към платката за модулация на COFDM, изходна мощност може да бъде до 1W (+30стока)

Характеристика

1. Работна честотна лента: 300MHz ~ 360MHz (по-честотата е регулируема)
2. Печалба: 45db
3. Паут: +33стока (PAR = 9,9 dB)
4. ACPR: < -36DBC
5. IP3: +49стока
6. Фигура на шума: 6db
7. Захранващо напрежение: 12V, мощност 1W (+30стока) предавателна мощност, консумацията на енергия е около 8,7W.
8. RF интерфейс: Отвор за мъжка резба SMA

спецификация

Електрически спецификации @ + 25 ℃，ZS = ZL = 50Ω,Vcc = 12V

параметър	Мерна единица	Минимум	Типично	Максимум
Честотен обхват	MHz	300	по избор	360
Малък усилвател на сигнала	db		45.0
Получаване на плоскост dB	db		+/-0.5
Изходна мощност Pout @ Pin = -15dBm	стока		30.0
IP3 dBm +49	стока		49.0
ACPR(WCDMA PAR = 9.9dB)	DBC		-40
Обратна изолация	db		-45
Фигура на шума	db		4
Ефективност(Pout = + 39dBm @ 470MHz)	%		13.8
VSWR вход			1.3:1
изход			2.0:1
DC захранване	V	7.4	10.0	12
Захранващ ток (Покой)	mA		300.0
размер			35.1mm x 18,1 mm x 0,6 mm

Незадължителна честота

PA1W330 Честота 300 ~ 360Mhz

PA1W470 Честота 450 ~ 500Mhz

PA1W550 Честота 544 ~ 564Mhz

PA1W600 Честота 580 ~ 620Mhz

PA1W700 Честота 680 ~ 720Mhz

Абсолютен максимален рейтинг

параметър	Абсолютен максимум
RF Входна мощност	-5.0 стока
Захранващо напрежение	+14V
Работна температура	-40℃ до + 65 ℃
Температура на съхранение	-55℃ до + 100 ℃

Преглед

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 стока (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.

С него 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℃ до + 65 ℃.

With selectable frequency bands ranging from 300 MHz до 720 MHz, this amplifier can be tailored for multiple industry needs including public safety, UAV video downlinks, military reconnaissance, wireless monitoring, and industrial IoT приложения. Optional versions are available with output powers of 1W, 2W, 5W, 10W, and 15W, offering a scalable solution for different deployment requirements.

---

Основни характеристики

• 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 db, ensuring strong amplification from low input drive levels.

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

• Excellent Linearity and Spectral Purity:

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

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

• Low Noise Performance:

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

• Optimized Efficiency:

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

• Компактен & Robust Design:

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

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

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

• Flexible Supply Range:

  • Operates on 7.4V to 12V DC supply.

  • Quiescent current: 300 mA typical.

---

Detailed Specifications

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

---

Абсолютен максимален рейтинг

Забележка: 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:

• 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.

---

Приложения

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.

---

Integration Guidelines

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

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

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

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

---

Често задавани въпроси (ЧЗВ)

Q1: What is the maximum output power of this amplifier?
А1: The standard module delivers +30 стока (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?
А2: да, we offer custom frequency tuning upon request. Например, 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. Обаче, изпълнение (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: да, 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 стока (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: да. 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, излъчване, and industrial IoT fields.

---

Заключение

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, излъчване, защита, 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.