Analog Devices Inc. ADMV2228P-EVALZ

Overview

ADMV2228P-EVALZ from Analog Devices is a passive 3 × 3 antenna array evaluation board designed to characterize the ADMV2228 dual-polarized mmWave surface-mount antenna element. It operates across 24.0 GHz to 29.5 GHz, supports slant ±45° polarization, delivers 5 dBi gain in 3 × 3 configuration, and features thru-reflect-line (TRL) calibration structures for de-embedding cable and trace losses-enabling accurate S-parameter measurement of the central ADMV2228 element in realistic array environments.

For engineers reviewing the ADMV2228P-EVALZ datasheet, ADMV2228P-EVALZ pinout, ADMV2228P-EVALZ application, or ADMV2228P-EVALZ equivalent, this board provides calibrated RF access to both ANT_PORT_1 (Pin 2) and ANT_PORT_2 (Pin 5) of the ADMV2228 under controlled 3 × 3 parasitic-element loading, supporting 5G NR N257/N258/N261 band validation, impedance matching verification with ANSYS HFSS, and beamformer interface testing.

Technical Context

The ADMV2228P-EVALZ implements a fixed 5.25 mm pitch 3 × 3 passive antenna array where only the center ADMV2228 element is active and fully accessible via calibrated RF ports; the eight surrounding elements act as parasitic directors/reflectors to emulate real-world array coupling and mutual impedance effects. TRL calibration structures (J1–J6) enable on-board de-embedding of launch losses up to 29.5 GHz.

It supports dual-polarized operation via orthogonal feeds to Pin 2 and Pin 5, allows single-polarized use by grounding the unused port, and enables circular polarization when paired with external 90° phase shift networks. The board's stripline routing with via fencing maintains >15 dB self-isolation between ports across the full band.

Key Specifications

Availability

ADMV2228P-EVALZ is available at Aetrix Electronics and suitable for 5G mmWave base station prototyping, broadband point-to-point radio development, phased array antenna characterization, and RF front-end validation requiring stable component supply and calibrated test infrastructure.

Supply support for ADMV2228P-EVALZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving communications, industrial, automotive, and aerospace markets with precision RF, power, and sensing solutions.

The ADMV2228P-EVALZ belongs to Analog Devices' mmWave antenna evaluation platform family, engineered specifically to accelerate development of 5G NR and broadband millimeter-wave systems by delivering production-representative, calibrated measurement environments for surface-mount antennas.

FAQ

What is the primary purpose of the ADMV2228P-EVALZ?

The ADMV2228P-EVALZ is a passive 3 × 3 antenna array evaluation board designed to characterize the ADMV2228 dual-polarized mmWave antenna element under realistic mutual coupling conditions. It enables precise S-parameter measurement of the center ADMV2228 element using integrated TRL calibration, supporting return loss, isolation, and radiation pattern validation across 24.0–29.5 GHz without external fixture errors.

How does the ADMV2228P-EVALZ differ from the ADMV2228A-EVALZ?

The ADMV2228P-EVALZ is a passive 3 × 3 array board with only the center ADMV2228 element active and calibrated RF access; the ADMV2228A-EVALZ is an active 4 × 10 array board integrating the ADMV1228 beamformer IC. The ADMV2228P-EVALZ focuses on antenna-only characterization, while the ADMV2228A-EVALZ validates full transmit/receive beamforming functionality with integrated control and bias circuitry.

Can the ADMV2228P-EVALZ be used for circular polarization testing?

Yes - the ADMV2228P-EVALZ provides independent access to both ANT_PORT_1 (Pin 2) and ANT_PORT_2 (Pin 5) of the ADMV2228, allowing external 90° phase shift networks (e.g., delay lines) to be inserted between ports. This enables circular polarization evaluation of the ADMV2228 element within the calibrated 3 × 3 array environment, with performance verified via co/cross-polarization measurements.

What calibration method does the ADMV2228P-EVALZ support?

The ADMV2228P-EVALZ integrates a full thru-reflect-line (TRL) calibration structure with defined delay line (7.0541 ps), short standards (J1/J5), and thru standard (J3/J4). This allows vector network analyzers to perform on-board de-embedding of launch losses, connector transitions, and trace effects - yielding clean, fixture-free S11/S21 data for the ADMV2228 element itself.

Is ANSYS HFSS modeling support provided for the ADMV2228P-EVALZ?

Yes - Analog Devices provides an ANSYS HFSS model of the ADMV2228P-EVALZ's 3 × 3 layout (including parasitic elements and TRL structures) starting with HFSS v241. The model enables simulation of return loss, isolation, and radiation patterns, and is validated against measured data from the physical ADMV2228P-EVALZ board - supporting pre-layout impedance matching and array optimization.