RF Bias Tee NF-NM DC-3000MHz

Product Description of Bias-Tee (DC-3GHz)

The Bias-Tee is a three-port passive device whose core function is to inject DC current or voltage into active components (such as amplifiers) in RF circuits without interfering with the normal transmission of RF signals in the main transmission path. Through the coordination of its three ports (RF, DC, RF&DC) and internal feed inductors and blocking capacitor, the Bias-Tee enables the efficient coexistence of DC bias and RF signals. With its unique design and functions, the Bias-Tee plays a vital role in the RF and microwave fields, and is widely used in communication, testing, sensing and other scenarios.

Product Functions

The Bias-Tee forms a filtering path through its built-in the blocking capacitor and feed inductors. The blocking capacitor prevents DC signals from entering the RF link, while the feed inductors suppress RF signals from leaking into the DC power supply terminal, achieving bidirectional isolation between DC and RF signals, and ensuring the independence and stability of power supply and signal transmission in RF systems.

Product Features

1. Precise Frequency Coverage: Supports full-band signal transmission from 10MHz to 3GHz, which can meet the signal frequency requirements of medium and short-wave communication, radio frequency identification (RFID), and microwave front-end and other fields.

2. Excellent RF Specifications: The insertion loss of the RF path is ≤0.5dB, the voltage standing wave ratio (VSWR) is ≤1.2:1, and the impedance is accurately matched to the 50Ω standard value, reducing signal reflection and power loss.

3. Outstanding Isolation Performance: The isolation between RF and DC ports is ≥30dB, effectively avoiding the interference of RF signals on the power supply module and preventing DC fluctuations from affecting the quality of RF signals.

4. Stable Power Bearing Capacity: Supports a maximum DC voltage of 50VDC and a DC current of 3A, which can meet the power supply needs of active devices such as low-noise amplifiers and RF switches.

5. Reliable Structural Design: Adopts N-type RF connectors for convenient connection and strong mechanical stability; the operating temperature range is -40℃~+85℃, and it complies with the RoHS environmental protection standard, making it suitable for industrial-grade and outdoor application environments.

Application Scenarios

The application scenarios of the Bias-Tee cover multiple RF technology fields:

1. In wireless communication systems, it provides DC bias for low-noise amplifiers in the RF front-end of base stations, ensuring low-loss amplification and transmission of RF signals.

2. In the field of RF test and measurement, it can be used as a supporting component for the characteristic test of active devices in laboratories, realizing the co-path input of DC bias and test RF signals.

3. In optical fiber communication systems, it provides stable DC power supply for laser diodes in optical transmitter modules, ensuring the stable modulation of optical signals.

4. In addition, it can also be applied to the RF links of RFID readers, wireless local area network (WLAN) devices and satellite receiving systems, undertaking the key functions of DC power feeding and RF signal isolation.

The Bias-Tee has a wide range of applications in RF circuits, especially in occasions where DC bias voltage needs to be supplied to active components such as amplifiers. Reasonable use of a Bias-Tee can ensure the stability and performance of RF circuits. Whether in product research and development, production testing or system maintenance, selecting a high-quality Bias-Tee can significantly improve system performance and reliability.