ADAR1000 Functional Replacement: GX1002 5–18 GHz Four-Channel Beamformer
GX1002 is a broadband, half-duplex beamforming IC operating from 5 GHz to 18 GHz. Compared with the 8 GHz to 16 GHz ADAR1000, it extends frequency coverage across additional C-, X- and Ku-band applications.
GX1002 provides comparable system-level beamforming functions but is not a pin-to-pin replacement. Migration requires changes to the package implementation, schematic, PCB, power supplies, RF interfaces and control software.
GX1002 as a Functional ADAR1000 Replacement
GX1002 integrates four transmit paths, four receive paths and a four-way RF splitter/combiner. Each channel provides independent 7-bit phase and 6-bit amplitude adjustment for beam steering, channel calibration and amplitude tapering.
The device also provides 121 programmable beam states, dual-pin T/R control and a rotationally symmetric RF-port arrangement for flexible phased-array front-end designs.
Hardware and Software Changes Required for ADAR1000 Migration
GX1002 and ADAR1000 support the principal functions required by four-channel phased arrays, including half-duplex T/R operation, 360° phase adjustment, 31.5 dB amplitude control, beam memory, four-wire SPI, power detection and external front-end bias control.
However, ADAR1000 uses an LGA-88 package, while GX1002 is supplied as a bare die. Their pin definitions, power architecture, RF interfaces, T/R control and register maps are different.
Replacing ADAR1000 with GX1002 therefore requires redesign of the mounting structure, schematic, PCB or substrate, RF matching, power supplies and control software.
GX1002 vs ADAR1000: Key Specification Comparison
|
Specification |
ADAR1000 |
GX1002 |
|
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° |
7-Bit, 2.8° |
|
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 |
15 dB |
|
Typical Transmit Output P1dB |
10 dBm |
11 dBm |
|
Typical Transmit Saturated Power |
13–14 dBm |
16 dBm |
|
Typical Receive Gain |
7–10 dB at Selected Frequencies |
7 dB |
|
Typical Receive Input P1dB |
−16 to −15 dBm |
−17 dBm |
|
Typical Receive Noise Figure |
8–9 dB at Selected Frequencies |
10 dB |
|
Programmable Beam States |
121 |
121 |
|
Integrated Power Detectors |
4 |
4 |
|
Temperature Sensor and ADC |
Integrated, 8-Bit ADC |
Integrated, 8-Bit ADC |
|
T/R Control |
Single-Pin |
Dual-Pin |
|
SPI Interface |
Four-Wire, Up to 25 MHz |
Four-Wire, Up to 50 MHz |
|
External PA/LNA/Switch Control |
Yes |
Yes |
|
Operating Temperature |
−40°C to +85°C |
−55°C to +125°C |
|
Package |
LGA-88, 7 mm × 7 mm |
Bare Die, 4.00 mm × 4.16 mm × 0.4 mm |
|
Pin-to-Pin Compatible |
— |
No |
|
PCB or Substrate Redesign Required |
— |
Yes |
|
Power and RF Verification Required |
— |
Yes |
|
Software Modification Required |
— |
Yes |
Broadband Beamforming Performance and Applications
Key GX1002 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 7-bit phase control with 2.8° resolution
l 6-bit amplitude control with 0.5 dB resolution
l Typical transmit gain of 15 dB
l Typical transmit output P1dB of 11 dBm
l Typical transmit saturated power of 16 dBm
l Typical receive gain of 7 dB
l Typical receive input P1dB of −17 dBm
l Typical receive noise figure of 10 dB
l 121 programmable beam states
l Four integrated power detectors
l Integrated temperature sensor and 8-bit ADC
l Dual-pin rapid T/R control
l Four-wire SPI interface operating at up to 50 MHz
l −55°C to +125°C operating temperature range
GX1002 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 bare-die integration, RF evaluation, substrate design, power architecture, SPI migration and beam-state configuration.
Request GX1002 Datasheet and Samples
Contact GXSC to request the GX1002 datasheet, samples, quotation or technical support for your ADAR1000 replacement evaluation or new broadband phased-array design.
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