Application of the 4-channel C/X/Ku-band Beamformer GX1000 in Broadband Detection Systems

The broadband detection system is an equipment designed for wideband signal acquisition, multi-target identification, and long-range detection. It must cover the broad frequency range from the X-band to the Ku-band. By employing beamforming technology, the system focuses electromagnetic wave energy toward the target direction, enhancing signal reception gain and anti-interference capabilities while enabling parallel detection and resolution of multiple targets. To meet these requirements, the GXSC 4-channel C/X/Ku-band beamformer GX1000 features a wide frequency coverage of 5~18 GHz, achieving seamless detection across the entire band and fully aligning with the system‘s application needs.

For applications in broadband detection systems, the GX1000 covers the C-band, X-band, and Ku-band, integrating four receive channels, four transmit channels, and corresponding power combining/dividing networks. It is a highly integrated silicon-based beamforming chip. Both the receive and transmit channels support amplitude and phase control, with a phase accuracy of 7 bits, enabling phase control within a 360° range at intervals of 2.8°; the amplitude accuracy is 6 bits, supporting amplitude control within a dynamic range of 31.5 dB at intervals of 0.5 dB.

The GX1000 employs a 4-wire SPI logic for register configuration and control, allowing adjustment of amplitude and phase for each channel. It supports bias regulation, on/off control for individual channels, and transmit/receive switching. Additionally, the single chip features two address pins to enable serial control of up to four multifunctional chips in applications.

Internal support for beam storage facilitates quick beam state switching.

The transceiver operates with single-pin control, enabling quick and convenient switching between transmit and receive modes.

Supports power modulation and can provide bias or logic control levels for off-chip PA, LNA, TR switch, fifth channel attenuator, fifth channel delay, and other components.

Integrated temperature compensation reduces performance variations between high and low temperatures.

Integrated four-channel power detection for convenient system monitoring.

The chip is powered by a 3.3V main supply, with 5V and -5V providing power to the modulation section.

The SPI digital interface operates at 3.3V logic. A negative voltage of -5V is used for generating the negative supply in the power modulation section (if the power modulation function is not utilized, the -5V and 5V voltages can be omitted).

Wide Temperature Range and Anti-Interference Design: Suitable for Complex Detection Environments

Broadband detection systems are often deployed in complex environments such as vehicles, ships, and aircraft, facing challenges like extreme temperatures, intense electromagnetic radiation, and vibration impacts. Traditional beamforming chips are prone to performance degradation under extreme conditions, which affects detection accuracy. The GX1000 operates within a temperature range of -40°C to 125°C, ensuring stable detection performance in both low-temperature vehicle-mounted and high-temperature ship-mounted scenarios.