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Double-balanced diode mixer circuit

2015-01-31 06:03  
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Double-balanced diode mixer circuit
The circuit uses a ring diode mixer with balanced input, output and LO ports. It can achieve isolation between ports of 30 ~ 60dB. In the actual circuit, characteristics are also very good. Double-balanced mixer shown in the figure is widely used in a variety of designs by electronics enthusiasts and amateur radio enthusiasts. Such designs are the direct conversion receiver, single-sideband transmitter and high-performance short-wave receiver. If it is designed well, just a double-balanced mixer can work within a very wide frequency range.