AESA T/R module
• Type
Output power of TRM：12W
• Development
The NCSIST T/R module is designed for the active phased array radar application. It utilizes the
state-of-the-art 15W GaAs MMIC power amplifier to maximize the power output of T/R module to
12W. A circulator is used to provide the duplexer function with limiter and SPDT switch to protect
the receiver from reflected power. The noise figure of the Low noise amplifier (LNA) is less than 1.2dB.
The 6-bit attenuator and phase shifter are designed for the amplitude and phase modulation with
0.5dB and 5.625° resolution. They are located in the common arm of transmit and receive path.
A digital compensation algorithm is applied to increase the variation phase accuracy to ±3° and the
amplitude control to ±0.25dB. These functions are achieved through the internal FPGA and flash
memory operation to build up the lookup table. If higher output power is required, we can replace
the GaAs PA module with the GaN power amplifier to obtain 50W or higher power output with the
same amplitude and phase control accuracy.
• Description
The Transmit/Receive module or T/R module is the most important core technology for the
development of active electronically scanned array (AESA) radar. The AESA radar generally consists
of thousands of T/R modules which can individually spread their signal emissions out across a band
of the frequencies and sensitively receive the echoes from target objects, allowing it to broadcast
transmitting signals while still remaining stealthy and greatly increasing the detection and tracking
abilities. Through the adaptive beam shaping, AESA radars also have high capability to resist jammer.
Due to the utilization of all solid state T/R modules and graceful degradation of array performance,
AESA radar is much more reliable than PESA radar which results in low maintenance cost. That is why
all the developed countries dedicate on the development of AESA radar.
• Specifications
1. Maximum GaAs MMIC PA output:15W
2. Output power of TRM：12W
3. 6-bit phase and amplitude modulation
4. Digital compensation
5. Phase variation accuracy:±3°
6. Amplitude variation accuracy:±0.25dB
7. GaN PA is optional
• Status
If higher output power is required, we can replace the GaAs PA module with the GaN power amplifier
to obtain 50W or higher power output with the same amplitude and phase control accuracy.