Qorvo QPM2637EVB

Overview

QPM2637EVB from Qorvo is an evaluation board designed to accelerate development and characterization of the QPM2637 9–10.5 GHz GaN T/R module for X-band phased array radar systems. It provides full RF and DC access to all ports-including ANT, TXIN, RXOUT1, RXOUT2, TXVD, RXVD, TXVG, RXVG, TXSW, and RXSW-and supports pulsed operation with optimized microstrip routing on Rogers RO4003C substrate (ε_r = 3.35).

For engineers reviewing the QPM2637EVB datasheet, pinout, applications, or equivalent options, this board enables rapid validation of gain, noise figure, PAE, switching time, and thermal performance across temperature and bias conditions-critical for EW, military radar, and high-reliability communications subsystems.

Technical Context

The QPM2637EVB implements a fully populated reference design matching Qorvo's recommended land pattern and mask layout. It integrates discrete 0402 and 1206 passive components-including 10 Ω bias resistors, 1000 pF DC-blocking capacitors, and 1 µF bulk decoupling caps-to ensure stable gate and drain biasing while preserving RF integrity at X-band frequencies.

RF interfaces use Southwest Microwave end-launch connector 1492-04A-5 for repeatable 50 Ω connection to test equipment. The board supports both lead-free (260 °C peak) and SnPb (245 °C peak) reflow profiles and includes explicit grounding and thermal management provisions aligned with the QPM2637's air-cavity EHS package and low-θ_JC thermal path.

Key Specifications

Availability

QPM2637EVB is available at Aetrix Electronics and suitable for X-band radar prototyping, electronic warfare subsystem validation, and military-grade communications transceiver development requiring stable component supply and traceable evaluation hardware.

Supply support for QPM2637EVB 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

Qorvo is a U.S.-based semiconductor company specializing in RF solutions for defense, aerospace, and infrastructure applications, with leadership in GaN-on-SiC technology and high-frequency front-end modules.

The QPM2637EVB belongs to Qorvo's evaluation platform family for GaN T/R modules, engineered specifically to de-risk integration of high-power, high-efficiency X-band radar FEMs into compact, thermally constrained phased array systems.

FAQ

What is the primary purpose of the QPM2637EVB?

The QPM2637EVB is an evaluation board built to characterize and validate the QPM2637 GaN T/R module under real-world X-band radar operating conditions. It provides calibrated RF paths, proper bias sequencing, and thermal interface provisions so engineers can measure receive gain, transmit PAE, switching time, and noise figure without custom PCB development. The QPM2637EVB directly supports design-in of the QPM2637 in defense and aerospace radar systems.

Which RF connectors are used on the QPM2637EVB?

The QPM2637EVB uses Southwest Microwave end-launch connector model 1492-04A-5 for all RF ports (ANT, TXIN, RXOUT1, RXOUT2), ensuring minimal discontinuity and repeatable 50 Ω impedance match up to 10.5 GHz. These connectors are soldered directly to the RO4003C microstrip lines and require no external adapters or cables for lab testing. The QPM2637EVB does not include SMA or other coaxial connectors.

Does the QPM2637EVB support both pulsed and CW operation of the QPM2637?

Yes-the QPM2637EVB supports both pulsed and continuous-wave operation of the QPM2637. Its bias network accommodates the specified 200 µs pulse width and 10% duty cycle for saturated power testing, and its thermal design handles the 6.6 W peak dissipation in transmit mode. DC blocking capacitors on TXIN and RX outputs allow safe CW probing, and the board includes dedicated test points for gate and drain voltage monitoring during either mode. The QPM2637EVB enables full characterization of the QPM2637 under both operational regimes.

How is thermal management implemented on the QPM2637EVB?

The QPM2637EVB features an exposed copper thermal pad footprint matching the QPM2637's embedded copper heat slug (EHS) package dimensions (6 × 5 mm). This allows direct mounting to an external heatsink or temperature-controlled test plate. The board's mechanical drawing specifies solder paste stencil openings and thermal via patterns to maximize heat transfer from the QPM2637 die to the system-level thermal solution. Thermal performance data for the QPM2637EVB aligns with Qorvo's published θ_JC values (6.97 °C/W TX, 12.37 °C/W RX).

Can the QPM2637EVB be used for production-level testing?

The QPM2637EVB is qualified for engineering validation and pre-production qualification-not high-volume production testing. It meets JEDEC MSL Level 3 and supports reflow assembly, but lacks automated test fixtures, calibration certificates, or production-grade traceability. For production environments, Qorvo recommends integrating the QPM2637 into a custom-designed PCB with controlled impedance, enhanced thermal vias, and automated optical inspection (AOI) compatibility. The QPM2637EVB remains essential for verifying functional margins before committing to that custom design.