ADAR1000 Functional Replacement: GX1003 5–18 GHz Beamformer with Self-Test
GX1003 is a four-channel, half-duplex beamforming IC operating from 5 GHz to 18 GHz. Its broadband coverage supports C-, X- and Ku-band radar, satellite communication and detection systems.
Unlike conventional SPI-controlled beamformers, GX1003 uses dedicated beam-control logic with separate serial data and function-control interfaces. It is not a pin-to-pin replacement for ADAR1000 and requires hardware and software redesign.
GX1003 as a Functional ADAR1000 Replacement
GX1003 integrates four transmit paths, four receive paths and a four-way RF splitter/combiner network. Independent phase and amplitude control supports beam steering, channel calibration and amplitude tapering.
The device provides the principal functions required to replace ADAR1000 at the system level while adding self-test, multichannel ADC monitoring and configurable pulse-protection functions.
Hardware and Software Changes Required for ADAR1000 Migration
GX1003 and ADAR1000 both support 4T4R half-duplex beamforming, phase and amplitude adjustment, beam storage, power detection, temperature sensing and external RF front-end control.
However, GX1003 uses a different WLCSP package, control-interface structure, register architecture, pinout and protection architecture. Its 6-bit phase control also provides a 5.6° step, compared with the 2.8° phase resolution of ADAR1000.
Replacing ADAR1000 with GX1003 requires redesign of the schematic, PCB, power supplies, RF interfaces and control software.
GX1003 vs ADAR1000: Key Specification Comparison
|
Specification |
ADAR1000 |
GX1003 |
|
Device Type |
X/Ku-Band Half-Duplex Beamformer |
C/X/Ku-Band Half-Duplex Beamformer |
|
Operating Frequency |
8–16 GHz |
5–18 GHz |
|
Transmit / Receive Channels |
4T / 4R |
4T / 4R |
|
Four-Way Splitter/Combiner |
Integrated |
Integrated |
|
Phase Adjustment Range |
360° |
360° |
|
Phase Resolution |
2.8° |
6-Bit, 5.6° |
|
Amplitude Adjustment Range |
≥31 dB |
31.5 dB |
|
Amplitude Resolution |
≤0.5 dB |
6-Bit, 0.5 dB |
|
Typical Transmit Gain |
16–21 dB at Selected Frequencies |
12 dB |
|
Typical Transmit Output P1dB |
10 dBm |
10 dBm |
|
Typical Transmit Saturated Power |
13–14 dBm |
15 dBm |
|
Typical Receive Gain |
7–10 dB at Selected Frequencies |
6 dB |
|
Typical Receive Input P1dB |
−16 to −15 dBm |
−17 dBm |
|
Beam Memory |
121 Beam Positions |
Integrated |
|
Power Detection |
Four Detectors |
Integrated |
|
Temperature Monitoring |
Integrated |
Integrated |
|
ADC Monitoring |
Integrated 8-Bit ADC |
Eight-Channel, 8-Bit ADC |
|
Integrated Self-Test |
Not Specified |
Yes |
|
Configurable Pulse Protection |
Not Specified |
Yes |
|
Control Interface |
Four-Wire SPI, Up to 25 MHz |
Separate Data and Function-Control Interfaces, Up to 50 MHz |
|
External RF Front-End Control |
Yes |
Yes |
|
Package |
LGA-88, 7 mm × 7 mm |
WLCSP, 6.450 mm × 6.675 mm × 0.725 mm |
|
Pin-to-Pin Compatible |
— |
No |
|
PCB Redesign Required |
— |
Yes |
|
Control Software Modification Required |
— |
Yes |
|
RF and Protection Verification Required |
— |
Yes |
Beam Control, Monitoring and Protection Features
Key GX1003 features include:
l 5 GHz to 18 GHz broadband operation
l Four transmit and four receive channels
l Integrated four-way RF splitter/combiner
l 6-bit phase control with a 5.6° step size
l 6-bit amplitude control with a 0.5 dB step size
l Typical transmit gain of 12 dB
l Typical transmit output P1dB of 10 dBm
l Typical transmit saturated power of 15 dBm
l Typical receive gain of 6 dB
l Typical receive input P1dB of −17 dBm
l Integrated beam memory and power detection
l Integrated temperature sensing
l Eight-channel, 8-bit ADC monitoring
l Integrated self-test functions
l Configurable pulse protection based on ADC monitoring
l Separate serial data and function-control interfaces operating at up to 50 MHz
GX1003 is suitable for phased-array radar, satellite communication, C-/X-/Ku-band phased-array antennas and broadband detection systems.
Replacement Evaluation and Technical Support
GXSC can provide samples and technical support for ADAR1000 functional replacement projects, including PCB redesign, RF evaluation, interface development, ADC monitoring and protection configuration.
Request GX1003 Datasheet and Samples
Contact GXSC to request the GX1003 datasheet, samples, quotation or technical support for your ADAR1000 replacement evaluation or new broadband phased-array design.
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