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Description

An RF/microwave balun (or transformer) is a device that takes an input signal at a given impedance and outputs both the same signal and an inverted version of the signal at a (potentially) different output impedance. They are suitable for applications in differential signaling, integrated circuit testing, and general lab and experimental use. The main figures of merit for a balun are the amplitude (ideally 0 dB across the band) and phase balance (ideally 0 degrees, meaning perfectly 180 degrees out of phase, across the band).

The BAL-0106, BAL-0212, and BAL-0520 are capacitively coupled baluns. They feature excellent amplitude balance, phase balance, and common mode rejection across a multi-octave bandwidth. They can handle more power without performance degradation than magnetically coupled baluns, and with low loss.

Specifications

Electrical Specifications - Specifications guaranteed from -55 to +100°C, measured in a 50Ω system.
Parameter Frequency Range Min Typ Max
Insertion Loss (dB) 5 to 20 GHz   4.5 6.5
Nominal Phase Shift (Degrees)   180  
Amplitude Balance (dB)   ±0.2 ±0.6
Phase Balance (Degrees)   ±3 ±8
Common Mode Rejection (dB) 22 30  
Isolation (dB)   6  
VSWR (Input)   1.4  
VSWR (Output)   2.6  
Total Input Power (W)       5
Weight (g)     38  
BAL-0520 Broadband Balun

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Model
BAL-0520

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