Product Features

120 GHz RADAR TRANSCEIVER – TRX_120_001

120-GHz Highly Integrated IQ Transceiver with Antennas in Packagein Silicon Germanium Technology

IC module TRX_120_001 is a compact 120 GHz radar transceiver in the 120-GHz ISM band between 122.0 and 123.0 GHz. This radar front end is characterized by a high measurement resolution. It comprises a separate signal line and interface for both, the transmitter and the receiver branch.

The RFE is an integrated transceiver circuit for the 122-GHz ISM band with antennas in package. It includes a lownoise amplifier (LNA), quadrature mixers, a poly-phase filter, a voltage-controlled oscillator, divide-by-32 circuit and transmit and receive antennas (see Figure 1). The RF signal from the oscillator is directed to the RX path via buffer circuits. The RX signal is amplified by the LNA and converted to baseband by two mixers with quadrature local oscillator (LO). The 120-GHz LO has four analog tuning inputs with different tuning ranges and tuning slopes. 

The tuning inputs can be combined to obtain a wide frequency tuning range. The analog tuning inputs together with integrated frequency divider and external fractional-N PLL can be used for frequency modulated continuous wave (FMCW) radar operation. With fixed oscillator frequency it can be used in continuous wave (CW) mode. Other modulation schemes are possible as well by utilizing analog tuning inputs. The IC is fabricated in a SiGe BiCMOS technology

120 GHz RADAR TRANSCEIVER – TRX_120_001 Datasheet

Features of 120 GHz RADAR TRANSCEIVER – TRX_120_001

• Radar front end (RFE) with antennas in package for 122-GHz ISM band
• Single supply voltage of 3.3V
• Fully ESD protected device
• Low power consumption of 380mW in continuous operating mode
• Duty is cycling possible
• Integrated low phase noise push-push VCO
• Receiver with homodyne quadrature mixer
• RX and TX patch antennas
• Wide bandwidth of up to 7GHz
• QFN56 leadless plastic package 8 × 8mm²
• Package partly molded, MSL3 rated
• Pb-free, RoHS compliant package
• IC is available as bare die as well (without antennas)

Part Descriptions

Applications of 120 GHz RADAR TRANSCEIVER – TRX_120_001

The main field of application for the 120-GHz transceiver radar frontend is in short range radar systems with a range up to about 10meters. By using dielectric lenses or reflectors, the range can be increased considerably. The RFE can be used in FMCW mode as well as in CW mode. Although the chip is intended for use in the ISM band 122GHz - 123GHz, it is also possible to extend the bandwidth to the full tuning range of 7GHz.

• ARTICLE NUMBER:TRX_120_001
• FREQUENCY:120 GHz
• FREQUENCY RANGE MIN/MAX: 119.3 GHz / 125.8 GHz
• OPERATION MODE:FMCW / CW
• SINGLE SUPPLY VOLTAGE: 3.3 V
• CURRENT CONSUMPTION: 112 mA
• PACKAGE QFN 56: 8 x 8 mm²
• EVALUATION BOARDS / KITS: EVALKIT SiRad Easy® r4