Broadband Transmission Line Balun 1:1 75Ω 50-1250MHz for RF Front-Ends and Broadband Matching

This 1:1 transmission line balun RF transformer is designed for broadband wireless communication and RF signal conversion applications. It uses a transmission line structure to achieve balanced/unbalanced signal conversion, offering wide frequency coverage and excellent amplitude/phase balance characteristics.The product uses an SMD package with low main-line loss and excellent input return loss performance, ensuring high signal transmission efficiency and low reflection.It is widely used in push-pull amplifiers, antenna systems, and broadband matching networks in RF applications. It is an ideal choice for broadband wireless communication and RF front-end signal conversion.

Features:

• 1: 1 CT Impedance
• 75Ω Characteristic Impedance
• RF power: 0.25W
• DC current: 30mA
• Frequency: 50 to 1250 MHz
• Insertion loss: 1.3dB Max
• Input Return loss: 11.0dB Min

Applications

• Broadband wireless communication

• VHF/UHF receivers

• VHF/UHF transmitters

• Push-pull amplifiers

• Antenna systems

• RF front-end modules

• Broadband impedance matching

• Test and measurement equipment

ELECTRONICAL SPECIFICATIONS(25℃,Z=75Ω)

• Frequency: 50-1250MHz
• Operating temperature: -40℃ to 85℃
• Storage temperature: -55℃ to 100℃

FAQ

Q: What is the difference between a transmission line balun and a traditional wire-wound balun?

A: A transmission line balun uses transmission line theory to achieve broadband matching and balanced/unbalanced conversion, offering wider frequency coverage (50-1250MHz) and better high-frequency performance. A traditional wire-wound balun relies on magnetic core coupling, offering good low-frequency performance but limited high-frequency response. The transmission line structure is suitable for broadband and high-frequency applications.

Q: What is the impact of insertion loss ≤1.3dB and input return loss ≥11dB on system performance?

A: Insertion loss ≤1.3dB ensures high signal transmission efficiency with low energy loss. Input return loss ≥11dB (typical 25dB) ensures good impedance matching, reducing signal reflection and standing waves, improving overall system performance. It is especially suitable for wireless communication systems with strict link budget requirements.

Q: How to apply for samples? What is the lead time?

A: You can submit a sample application through our website or email. Please provide your company information and target model. Samples are free of charge and will be shipped within 3-5 working days. Mass order lead time is generally 2-8 weeks. MOQ and lead time for custom products will be confirmed separately.