Replacing the ADAR1000: GXSC 4-Channel C/X/Ku-Band Beamformer for Point-to-Point Microwave Communications

A point-to-point microwave communication system establishes a line-of-sight wireless transmission link between directional microwave equipment at both ends. It performs bidirectional high-speed data exchange via microwave carriers, enabling network interconnection between sites, service data backhaul, and real-time signal relay. Active phased-array beamforming technology enables adaptive agile microwave beam steering, precise pointing, and dynamic gain control, and is a core technology direction for highly reliable, long-distance point-to-point microwave communications.

GXSC‘s C/X/Ku-band beamformer demonstrates high data transmission capability and flexible beam control technology. It supports an operating frequency range of 5GHz to 18GHz, covering the C-band, X-band, and Ku-band. Its wide frequency coverage enables adaptation to multi-band point-to-point microwave communications. This chip has replaced the ADAR1000 and is widely used in radar, satellite, and many other fields.

The GXSC beamformer integrates 4 receive channels, 4 transmit channels, and corresponding power combining/splitting networks. It is a highly integrated silicon-based beamforming chip. Both its receive and transmit channels support amplitude and phase control, with a phase resolution of 7 bits, supporting phase control over 360° with 2.8° steps; and an amplitude resolution of 6 bits, supporting amplitude control over a 31.5dB dynamic range with 0.5dB steps.

Key features of the GXSC beamformer are as follows:

5~18GHz operating range

Receive/transmit time-division half-duplex

4T4R RF channels, integrated power splitting/combining network

360° phase control range / 7bit / LSB=2.8°

31.5dB amplitude control range / 6bit / LSB=0.5dB

Integrated bias and channel control

Integrated temperature sensor

Integrated quantization ADC

Integrated beam memory

Integrated power detection

Single-pin control for fast transmit/receive state switching

Standard 4-wire SPI control logic

CMOS process, low-cost mass production

Excellent RF performance: good receive/transmit gain flatness, high output power, high amplitude and phase control accuracy

WLCSP package (6.20x6.05x0.725mm)