Search for topics or resources
Enter your search below and hit enter or click the search icon.
Skip to main content
RF Measurement
RF Equipment
About
RF Power Meter
4421A Family
Bird's 4421A Power Meter combines precision measurement with a modern touchscreen interface, delivering fast, reliable RF power readings in real time. Designed for ease of use, it supports a wide range of Bird sensors to meet evolving test and calibration needs.
Dual Sensor Inputs for Flexible Workflow
Switch between two sensors without swapping cables or reconfiguring setups. The 4421A supports dual input channels, saving time and increasing throughput during testing.
Built-In Graphing for Smarter Measurements
Visualize power behavior in real time. The 4421A’s graphing capability lets you confirm that your device under test has fully settled before taking a final reading—reducing error and improving consistency.
Backward-Compatible with Proven Sensors
Upgrade without overhauling. The 4421A is fully compatible with Bird’s trusted precision sensors, letting you preserve your investment while gaining modern performance.
Upgrade from the Obsolete 4421 Meter with Confidence
Precision You Know—Now Smarter and Compact.
If you’ve relied on the Bird 4421 for accurate RF power measurement, the 4421A is the natural next step. Fully backward-compatible with Bird’s precision sensors, the 4421A builds on the legacy of the original—offering ±0.5% accuracy, a smaller, lighter form factor, and dual sensor inputs for more efficient workflows.
It adds modern enhancements like graphing capability to visualize signal behavior and confirm stability before capturing a reading—critical for process control and repeatability in high-stakes environments like semiconductor manufacturing.
With the 4421A, you get the accuracy you trust—refined for today’s expectations.
What’s at Stake?
RF Power Accuracy,
RF Power Accuracy,
Process & Yield Stability
Precision isn’t a luxury in your fab—it’s a requirement. A slight deviation in RF power during etch or deposition can impact layer integrity, reduce uniformity, and ultimately lower your yield. Without accurate, repeatable power measurement, process drift becomes inevitable, and quality control suffers.
The Bird 4421A delivers the high-resolution data and real-time insight you need to maintain tight process windows, qualify tools faster, and catch anomalies before they affect production. It’s not just about measuring power—it’s about protecting throughput, consistency, and the bottom line.
In a market where every wafer counts, make every measurement matter.
Accessories
Compatible accessories to support installation, operation, and maintenance.
Latch-n-Lock Cable
4421-038
Coiled Interface Cable securely connects the Bird 4421A RF Power Meter to the measuring sensor head.
Carrying Case
4300B215
The 4300B215 Carrying Case cradles your 4421A Series RF Power Meter and up to 4 RF power sensors in a shock-absorbing laminated die-cut foam insert. Another insert holds power cables and miscellaneous accessories.
Rack Mount Kit
4421A-RM1
The rack mount kit allows the 4421A to be installed into any EIA standard 19" rack. The pan/tilt feature allows four direction movement of the 4421A, making it easy to find the perfect viewing angle.