CMOS mixers are integral components in modern radio frequency (RF) circuit design, enabling frequency conversion in wireless systems while prioritising low power consumption.

The figure below shows a block diagram of a table-top AM radio from the late 40’s where the radio tunes in stations at the frequency frf = frequency of OSC1 – 455 kHz.

It requires three relatively simple circuits in oscillator, mixer, and audio amplifier, and while it doesn’t provide acceptable performance for music radio it’s fine for speech.

The mixer circuit establishes the receiver’s basic performance level, making it the most critical part of the radio. Linear Technology’s LTC5551 downconverting mixer brings a whole new level of ...

There are many people who want to listen whats going on in VHF 108 – 132 MHz. This vhf am converter converts a band between 106 and 150 MHz, so you can listen even 2m radio amateurs (144Mhz). This vhf ...