Showing Slide 1 of 6
LDTR11 24GHz Radar Speed Sensor Antenna Module
The LDTR11 speed-measuring radar antenna module adopts the German BGT34LTR11 series 24GHz radar MMIC chip, combined with a high-gain antenna design. Suitable for Doppler speed measurement applications, it features high sensitivity, low power consumption and compact size.
Products Categories
Get A Free Quote
Main Parameters
| Part number | LDTR11 |
| Working voltage | 3.9-5.5V |
| Working current | 51-68mA |
| Working Temperature | -45~+85℃ |
| Transmission frequency | 24-24.25GHz |
| Temperature drift | -1MHz/°C |
| Output power | +18~+20dBm |
| Transmitter duty cycle | 0.01 |
| Spurious interference | -30dBm |
| Intermediate frequency output impedance | 100Ω |
| Intermediate frequency amplification gain | 50dB |
| I/Q signal amplitude balance | 3dB |
| Phase shift of I/Q signals | 80°-100° |
| Level | 12° |
| Vertical | 24° |
| Size | L/W/H 61×61×7.5mm |
What is the operating frequency?
The LDTR11 operates in the 24GHz band (24–24.25GHz), compliant with global ISM regulations.
What is the power consumption?
Typical current is 56mA at 5V, with a range of 51mA to 68mA.
What is the output power and sensitivity?
EIRP output power is +18dBm to +20dBm. Receiver sensitivity is -122dBm, with overall system sensitivity of -140dBc.
What outputs does the module provide?
It provides I/Q intermediate frequency outputs with 90° phase shift, enabling speed and direction detection. IF range is 20Hz to 20kHz.
What are the beam width specifications?
-3dB beam width is 12° horizontal and 24° vertical, with side lobe suppression of -20dB and -18dB respectively.
What is the operating temperature range?
The module operates from -45°C to +85°C, suitable for both indoor and outdoor harsh environments.
What are the dimensions and interface?
Dimensions are 61×61×7.5mm. Interface is simple 6-pin: Vcc, GND, IFQ, IFI, and two NC pins.
How does LDTR11 differ from LDAM1103?
Both have the same dimensions (61×61mm) and pinout, but LDTR11 has higher typical current (56mA vs 41mA), indicating different internal tuning or gain settings for specific performance requirements.
What are typical applications?
CW Doppler speed measurement, motion detectors, speed sensing, lighting control, access control, smart home, and alarm systems.
Technical Support & Custom Solution
We provide datasheet, dimension drawing, interface protocol, demo code and technical support.
Support sample test, ODM/OEM customized service, welcome global customers to inquire and cooperate.
