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120 GHz Radar Front End

TRX 120 01 RFE
Description of the radar set, tactical-technical characteristics Описание; Основные тактико-технические характеристики (Базы данных)

Figure 1: TRXA_120_02 RFE based evaluation board
© 2016 Silicon Radar GmbH

Figure 1: TRXA_120_02 RFE based evaluation board

Specifications
frequency: 122 GHz … 123 GHz (N-Band)
average power: 1 mW
instrumented range: > 10 m
range resolution:
accuracy:
beamwidth: ca. 30 degrees
MTBCF:
MTTR:

120 GHz Radar Front End

TRX 120 01 RFE

TRX 120 01 RFE is a single-chip Radar Front End in terahertz-band. It is a highly integrated IQ transceiver with antennas on chip in Silicon Germanium Technology. It uses the free ISM-Band between 122 and 123 GHz. The radar is designed for short distances up to 10 meters. This range can be extended by using a dielectric lens that increases the directivity of the integrated into the chip patch antenna.

The chip includes a low-noise-amplifier (LNA), quadrature mixers, poly-phase filter, Voltage Controlled Oscillator with digital band switching, divide by 32 outputs, transmit and receive antennas. The RF-signal from oscillator is directed to RX-path via buffer circuits. The RX-signal is amplified by low noise preamplifier and converted to baseband in two mixers with quadrature local oscillator frequency. The 120 GHz oscillator has three analog coarse tuning inputs and one analog fine tuning input. The tuning inputs can be combined to obtain large tuning range and large bandwidth. The analog tuning inputs together with integrated frequency divider and external fractional-N PLL can be used for FMCW radar operation. With fixed oscillator frequency it can be used in CW-mode. Other modulation schemes are possible as well by utilizing analog tuning inputs.

fdiv -out-
(differential)
Divider
1:32
TX
60 GHz
120 GHz
fine
analog
coarse
3 Bit
Power Amplifiers
IF Q
(differential)
IF I
(differential)
RX
LNA
Vtune

Bild 2:

fdiv -out-
(differential)
Divider
1:32
TX
60 GHz
120 GHz
fine
analog
coarse
3 Bit
Power Amplifiers
IF Q
(differential)
IF I
(differential)
RX
LNA
Vtune

Figure 2:

Source: