An LTCC-based 5-6 GHz receiver with integrated antenna

We report the design, assembly and measurement of an active RF-frontend module based on LTCC technology. The frontend is part of a 16 element array for a channel sounder operating in the frequency range between 5.15 GHz and 5.875 GHz. The active module includes the antenna, an LNA, a band pass filter for the image rejection and a mixer; a directional coupler is also incorporated for calibration purposes. The measured gain of the module is between 28-34dB over the operating band.