Harmonic Radar
I. Definition
Harmonic radar is a radar system that transmits a fundamental wave signal (such as electromagnetic waves) and receives the second, third, or even higher-order harmonic/combined wave signals radiated by the target, thereby judging, identifying, and detecting the target. Its core lies in utilizing the nonlinear characteristics of the target (such as metallic junctions, PN junctions, etc.) to generate harmonic signals, thus achieving a detection method different from traditional radar.
II. Characteristics
High sensitivity and low false alarm rate
Strong clutter suppression capability
Anti-nozzle interference
III. Application
Military electronic countermeasures
Industrial equipment inspection
Field search and rescue
IV. Specification
Parameters | Index | |
Product Model | ZG-37SMA05FMCW-A | |
Operating Frequency Band | Basic emission | 5.5-6.1GHz |
Harmonic detection | 5.8GHz | |
Antenna Port Instantaneous Pulse Power |
| 20W |
Frequency Band Compliance | Transmit frequency | 2.9GHz |
Receive frequency | 5.8GHz | |
Harmonic Identification Accuracy | ±3dBc(@-30dBm input) | |
Phase Noise | ≤-80dBc/Hz @1kHz Offset | |
RF Front-End Module | Transmit chain | high-power amplifiers and frequency dividers, it supports an output of 40dBm@5.5~6.1GHz, with a typical output of 40dBm@2.9GHz. |
Receive chain | high-precision mixer chip with a mixing bandwidth of 100MHz. | |
4096 Point operation delay |
| <2ms |
V. Synchronous monitoring spectrum analyzer received signal, maximum -45dBm

VI. Harmonic antenna coaxial feed VSWR approximately -10dB

2.9G 5.8G
VII. Input/Output/Power Amplifier Current Results

VIII. External Module 2.9G and 5.8G Helical Antennas (2.9G size is larger than 5.8G size)

Ordering Information
ZG | transmitted power | Port | Length of antenna connection line | Tuning method | harmonic labels |
20=20dbm | SMA | 05=0.5m | FMCW | A=include | |
37=37dbm | 10=1m | X=not include |