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The ADAR3003ACBZ is a beamforming chip for polarised phased arrays, featuring transmission from 27 GHz to 31 GHz, 1 beam input, and 4 dual-polarisation element outputs. Each of the eight RF paths passes through a variable amplitude and phase (VAP) module, providing a gain adjustment range of ≥31.5 dB and a phase adjustment range of 360°, with gain and phase resolution of ≤0.5 dB and 5.625°, respectively. Each VAP includes a digital step attenuator (DSA) and a phase shifter unit (PSU). An integrated RF power detector is located at the output of each path, with a measurement range of 18 dB.

Access to all on-chip control registers and memory is via a simple 3-wire or 4-wire serial port interface (SPI). Additionally, the SPI can control up to sixteen devices on the same serial line via four address pins. The random access memory (RAM) can store up to 128 beam states, with each beam polarisation organised into 64 beam states. The on-chip sequencer selects and advances beam states from the RAM or first-in-first-out (FIFO).

The ADAR3003ACBZ is packaged in a 128-ball 5mm × 5mm wafer-level chip-scale package (WLCSP) with a rated temperature range of -40°C to +85°C.

Features (ADAR3003ACBZ)

RF range: 27GHz to 31GHz

Programmable amplifier bias

Power consumption range (static): 571mW to 805mW

Gain range: 20.8dB to 23.3dB at 29.2GHz

Output P1dB range: 13.1dBm to 11.8dBm at 29.2GHz  

Power consumption at OP1dB: 1.01W (nominal bias)  

Specifications at 29.2GHz and nominal bias  

RMS gain error for DSA 0 to DSA code 31: 0.98 dB

RMS phase error from PSU code 0 to PSU code 63: 4.7°

Maximum path gain: 22.7 dB

OIP3: 20.2 dBm

OP1dB: 12.1 dBm

Output PSAT: 14.5 dBm

Output NSD: −127.8 dBm/Hz  

Noise figure: 22.7 dB  

Isolation (between elements): < −30.7 dB  

Phase adjustment range: 0° to 360°  

Phase resolution: 5.625°  

Gain adjustment range: ≥31.5 dB  

Gain resolution: ≤0.5 dB

User-programmable timing controller for selecting beam states  

Memory with 128 pre-stored beam states  

64 beam states per beam polarisation  

FIFO memory with 32 beam states  

16 beam states per beam polarisation  

Variable SPI length for flexible and efficient beam commands

Update, reset, and mute for 1 to 16 beams

Integrated 8-bit ADC for temperature sensors and RF detectors

3-wire or 4-wire SPI

Package: 128-ball 5mm × 5mm WLCSP

Applications (ADAR3003ACBZ)

Mobile Ka-band satellite communication applications

Airports

Ground terminals

Maritime terminals

• 1.Is the inventory and price seen on the platform accurate?

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