GXSC passive dual balanced broadband mixer chip GX5548/5549 replaces LTC5548/5549 for application in meteorological radar

Modern weather radars, such as Doppler weather radar and phased array weather radar, need to cover a wide operating frequency band (5.6GHz) to balance detection range and resolution; At the same time, meteorological radar needs to process large dynamic range signals and have low noise and high linearity characteristics to avoid signal distortion affecting weather parameter inversion.

The high-performance passive dual balanced broadband mixer chip GX5548/5549 from GXSC can be used for up conversion or down conversion. With ultra wideband coverage, low frequency conversion loss, high linearity, low noise figure, and integrated design, it is an ideal choice for frequency conversion of meteorological radar RF front-end signals.

The broadband mixer GX5548/5549 has high linearity (input P-1dB and IIP3) and integration, integrating internal RF balun, and can support broadband operating frequencies of 2-14GHz. It can adapt to multi band meteorological radar and provide support for the "multi band collaborative detection" of meteorological radar. The GX5548/5549 integrates an LO amplification link internally, supporting a local oscillator operating frequency of 1-12GHz, with a typical local oscillator power of only 0dBm. It also integrates an LO multiplier, which can be enabled or disabled through ports compatible with CMOS logic. Enabling the LO multiplier can reduce the requirement for local oscillator frequency and facilitate system applications.  

GX5548/5549 broadband mixer chip features:

Up conversion or down conversion

Integrated local oscillator amplification link

Integrate optional LO multiplier

Broadband RF LO IF operating frequency

Single ended RF and LO ports 50 ohm matching

Differential IF port

Support ultra-low frequency IF applications

High linearity (input PI and IIP3)

QFN package, size 3mmx2mm

Working temperature range -40 ℃~125 ℃

Replace LTC5548/5549

The GX5548/5549 mixer chip is powered by a single 3.3V power supply, with a voltage/current (multiplier OFF) of only 3.3V/83mA; The voltage/current (multiplier ON) is only 3.3V/96mA, making it particularly suitable for battery powered portable radar devices with low power consumption characteristics.