Broadband Transmission Line Balun 1:2 75Ω 5-1250MHz for RF Front-Ends

This 1:2 transmission line balun RF transformer is designed for broadband wireless communication and RF signal conversion applications. It uses a transmission line structure to simultaneously achieve 1:2 impedance transformation and balanced/unbalanced signal conversion.The product uses an SMD package with ultra-wide frequency coverage (5-1250MHz) , low main-line loss, and stable and reliable amplitude/phase balance performance across the wide frequency range.It is widely used in VHF/UHF receivers/transmitters, push-pull amplifiers, antenna systems, and broadband matching networks in RF applications. It is an ideal choice for impedance transformation and signal conversion in 75Ω systems.

Features:

• 1: 2 Impedance
• 75Ω Characteristic Impedance
• RF power: 0.5W
• DC current: 30mA
• Frequency: 5 to 1250 MHz

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: 5-1250MHz
• Operating temperature: -40℃ to 85℃
• Storage temperature: -55℃ to 100℃

FAQ

Q: How do you establish long-term good business relationships with us?

A: We insist on high-quality products and fast delivery to ensure our customers win more projects. At the same time, we treat every customer as a friend and sincerely do business with them to build long-term friendship.

Q: How do you control quality?

A: We control product quality through incoming quality inspection (IQC) and 100% quality testing before packaging and shipment, ensuring every product meets specifications.

Q: What is the minimum order quantity (MOQ)?

A: The minimum order quantity varies by product type. The MOQ for standard products is typically 1000 pieces, while custom products may require a higher MOQ. Small trial orders can be negotiated. Please contact our sales team with your specific requirements.

Q: How do amplitude balance ±1.8dB and phase balance ±7° affect system performance across the 5-1250MHz wide frequency range?

A: Over an ultra-wide range of 10 octaves, these specifications ensure the differential signal maintains acceptable balance across the full band, effectively suppressing even-order harmonics and common-mode noise.

Q: How does the 1:2 transmission line balun achieve impedance transformation from 75Ω to 150Ω?

A: It uses the transmission line structure to convert a 75Ω single-ended signal to a 150Ω differential signal (or vice versa), suitable for matching a 75Ω system to a 150Ω differential load, such as the input stage of a push-pull amplifier.