RF Electronics Chapter 5: Frequency Mixers Page 140
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
Figure 5.47. RF spectra of DBM2 with different reflectionless filter terminations.
Triple Balanced Mixer and High Level DBM
Triple balanced mixers (TBM) use two diode quads and three separate baluns. That results
in a mixer which has a wider bandwidth, a better L-R, L-I and R-I isolation, a better return
loss, a higher 1-dB compression and IP3 power than a DBM. The TBM has to drive twice
as many diodes than a DBM and thus requires 3 dB more LO power to drive the diodes
at the same level. Figure 5.48 shows the circuit diagram of a TBM.
Figure 5.48. Circuit diagram of a triple balanced mixer.
RF Electronics: Design and Simulation
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