GXSC Phase-Amplitude Multifunctional Chip Replaces ADMV4680 for Ku-Band Satellite Communication Systems

Satellite communication systems primarily enable functions such as voice interconnection, text transmission and reception, data exchange, and video transmission. Their key feature is the ability to establish independent communication links in remote areas, over oceans, and in aviation scenarios without relying on terrestrial relay equipment. These systems can be categorized into different frequency bands, including L-band, X-band, Ku-band, and Ka-band. The Ku-band, in particular, experiences minimal terrestrial interference due to its high frequency range (typically between 12.5~18 GHz), making it less susceptible to microwave radiation interference and significantly reducing the environmental requirements for reception.

The GXSC phase-amplitude multifunctional chip can replace the ADMV4680 for application in Ku-band satellite communication systems. This chip covers the Ku-band satellite communication receive (10.7~12.7GHz) and transmit (14~14.5GHz) frequency bands, integrating four receive channels, four transmit channels, and corresponding power combining/power distribution networks, making it a highly integrated silicon-based beamforming chip. Both receive and transmit channels support 6-bit amplitude and 6-bit phase control. Its product advantages are as follows:

1. Performance compatible with ADMV4680

2. CMOS process, low-cost mass production

3. High transmission and reception gain ≥25dB

4. High transmission output power OP-1d8 power ≥11dBm

5. Low power consumption

The GXSC amplitude-phase multifunctional chip employs a 4-wire standard SPI logic for register configuration and control, supporting bias adjustment, channel enable/disable control, and transmit/receive switching. Additionally, the single chip features five address pins (ADD0~ADD4) to enable serial control of up to 32 chips in applications. The chip internally supports beam storage for convenient rapid switching of beam states. The chip is powered by a 1.2V main supply, while the digital section operates at 3.3V, with digital I/O utilizing standard 3.3V CMOS logic.

Performance Indicators of the GXSC Amplitude-Phase Multi-Function Chip:

Receive 10.7~12.7 GHz

Transmit 14~14.5 GHz

Time Division Half Duplex

4T4R RF channel with integrated duplexer/combiner network

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

Amplitude Control Range: 31.5dB / 6-bit / LSB=0.5dB

Receive NF approximately 3dB

Integrated temperature sensor

Integrated Quantization ADC

Integrated 4-Channel Power Detector

Integrated beam storage

```Individual pin switching between receive and transmit modes```

4-line SPI control

WLCSP (BGA) Surface Mount Package

Integrated Bias and Channel Control