Herotek DZR400KA 10MHz–40GHz Zero-Bias RF Detector
Herotek DZR400KA 10MHz–40GHz Zero-Bias RF Detector
The HEROTEK DZR400KA is a broadband zero-bias Schottky diode detector covering frequencies from 10MHz to 40GHz. It converts RF and microwave signals into a proportional DC output without requiring an external bias supply.
With its wide frequency coverage, flat response and compact connectorized package, the DZR400KA is suitable for microwave test equipment, transmitter monitoring, signal-level detection and radar receiver systems.
Key Features
10MHz to 40GHz broadband frequency coverage
Zero-bias operation without an external power supply
High low-level RF sensitivity
Flat response across multiple microwave bands
Compact coaxial construction
K male RF input and SMA female output
Positive-output version available as DZR400KAP
DZR400KA Specifications
| Parameter | Specification |
| Manufacturer | Herotek |
| Model | DZR400KA |
| Product Type | Zero-Bias Schottky Diode Detector |
| Frequency Range | 10MHz–40GHz |
| Maximum VSWR | 1.3:1 to 18GHz; 1.8:1 to 40GHz |
| Maximum Flatness | ±0.3dB to 18GHz; ±0.6dB to 26GHz; ±1.0dB to 40GHz |
| Low-Level Sensitivity | 0.4mV/µW |
| Maximum CW Input Power | 200mW |
| RF Input Connector | K male, 2.9mm |
| Output Connector | SMA female |
| Standard Output Polarity | Negative |
| Operating Temperature | −55°C to +100°C |
| Dimensions | 1.30 × 0.32 inches |
Typical Applications
The Herotek DZR400KA can be used in:
RF and microwave test equipment
Transmitter output monitoring
Signal-level and power monitoring
Radar receiver testing
Laboratory measurement systems
Built-in test and fault-monitoring circuits
Broadband microwave subsystems
Because the detector does not require an external bias supply, it can simplify RF monitoring circuits where space, wiring and power consumption are limited.
DZR400KA Selection Notes
The standard DZR400KA provides a negative-polarity output. Applications requiring positive output polarity can select the DZR400KAP version.
For systems requiring frequency coverage above 40GHz, the Herotek DZR50024A extends operation to 50GHz and uses a 2.4mm male RF input connector. The DZR400KA is suitable for applications requiring coverage up to 40GHz with a K-type RF interface.
When selecting a detector, customers should also consider the required frequency range, output polarity, RF input connector, sensitivity, maximum input power and calibration requirements.
Ordering Information
DataStorageIC supplies Herotek RF and microwave components for international customers. Support is available for:
DZR400KA price and lead-time inquiries
Datasheet and technical specification requests
DZR400KAP positive-polarity version
Herotek detector model comparison
International quotation and delivery support
Please provide the required quantity, destination country and expected delivery date when requesting a quotation.
Frequently Asked Questions
Does the Herotek DZR400KA require an external bias?
No. The DZR400KA is a zero-bias Schottky diode detector and does not require an external DC bias supply.
What frequency range does the DZR400KA support?
The DZR400KA operates from 10MHz to 40GHz.
What connectors are used on the DZR400KA?
It uses a 2.9mm K male connector for the RF input and an SMA female connector for the detector output.
What is the output polarity of the DZR400KA?
The standard DZR400KA provides negative output polarity. The DZR400KAP version provides positive output polarity.
What is the maximum CW input power?
The specified maximum continuous-wave input power is 200mW.
What is the difference between DZR400KA and DZR50024A?
The DZR400KA operates up to 40GHz and uses a K male RF input. The DZR50024A extends frequency coverage to 50GHz and uses a 2.4mm male input connector.
Can the DZR400KA be used for RF power measurement?
The DZR400KA can be integrated into an RF power-monitoring or signal-detection system. For accurate absolute power measurements, the complete measurement path should be calibrated according to frequency, input level, load impedance and detector response.
