GXSC Amplitude-Phase Multi-function Chip Replaces ADMV4680 in Phased Array Systems

Modern radar and communication systems rely on phased arrays to provide essential functions such as beamforming and beam control. Beamforming offers numerous advantages for wireless communication links, including reduced interference, increased range, expanded service capacity, and enhanced security features.

Phased array systems electronically control beam direction and shape, offering advantages such as rapid scanning, multi-beam formation, and strong anti-interference capabilities. Their performance depends on the integration level of the beam synthesis network, amplitude-phase control accuracy, and channel consistency. The amplitude-phase multifunctional chip of GXSC, with its high integration, precise amplitude-phase regulation, and low power consumption, serves as an optimal front-end solution for phased array systems.

For applications in Ku-band satellite communication phased arrays, this GXSC amplitude-phase multifunctional chip covers the reception (10.7~12.7GHz) and transmission (14~14.5GHz) frequency bands of Ku-band satellite communication. The chip integrates 4 receive channels, 4 transmit channels, and corresponding power combining/dividing networks, making it a highly integrated silicon-based beamforming chip.

Both the receive and transmit channels support 6-bit amplitude and 6-bit phase control, utilizing a 4-wire standard SPI logic for register configuration and control. This enables bias adjustment, channel enable/disable control, and transmit/receive switching. Additionally, the single chip features five address pins (ADD0~ADD4) to achieve serial control of up to 32 chips in an application.

The chip internally supports beam storage, facilitating quick switching between beam states. It operates on a 1.2V main power supply, with digital I/O powered by 3.3V and utilizing standard 3.3V CMOS logic.

Performance metrics:

采用WLCSP(BGA)封装，性能兼容ADMV4680

CMOS process, low-cost mass production

High transmission and reception gain ≥25dB

High transmit output power OP-1d8 power ≥11dBm

Operating temperature: -40°C to 85°C

Receive 10.7~12.7 GHz

Transmit at 14~14.5 GHz

Time Division Half-Duplex (TD-HD)

4T4R RF channel with integrated duplexer/combining network

360° phase control range / 6-bit / LSB = 5.6°

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

Receive NF approximately 3dB

Integrated temperature sensor

Integrated Quantized ADC

Integrated 4-Channel Power Detector

Integrated Beam Storage

Individual pin for switching between receive and transmit modes

4-wire SPI control

WLCSP (BGA) Surface Mount Package

Integrated Bias and Channel Control