Active Antenna Array Units

Modular Units Featuring Line-Replaceable Quad

T/R Module ‘Common Building Block’ Units for

Scaleability and Ease of Integration and Repair

Using a Line Replaceable Unit (LRU) approach,

API Technologies has developed a solution set that

streamlines system integration, simplies repair, and

reduces the cost of ownership of AESA, E-Scan, and

other next-generation radar platforms.

API’s Active Antenna Array Unit (AAAU) system is

comprised of multiple QTRM (Quad Transmit Receive

Module) assemblies, packaged in removable planks

that form the AAAU sub-array. The QTRMs are Line

Replaceable Units (LRU), which allows for ease of

assembly and maintenance.

These API-designed and manufactured QTRMs are

ready to use out of the box. All that is necessary is the

upload of system calibration data, which then propagates

through the system, speeding set-up time.

Quad Transmit/Receive Modules

Common Building Blocks for E-Scan & AESA Radar

System Solutions

API Technologies’ Quad Transmit Receive Module, or

QTRM, solutions for AESA/E-Scan radar applications

offer a unique and innovative solution to system

integrators and prime contractors seeking a high

performance, high level transmit/receive solution for the

development of active antenna array systems and sub-

systems.

This common module approach, which uses API’s

European designed and manufactured elements and

COTS components, delivers ease of system integration,

rst line repair and reduced cost.

AAAU

API’s steerable AAAU easily bolts on to the SPU for use in

air, sea, and ground-based AESA radar, data link, and satcom

applications. Both the unit’s compact size and scalability

allow for use across multiple defence and commercial

aerospace programs. The AAAU is comprised of multiple,

easy-to-replace planks, which form a sub-array.

Plank

The Plank is the quick-remove host for four QTRMs, creating

a 16-channel assembly with integrated antenna. The plank

incorporates the RF manifold, DC distribution and logic/control

distribution and is inserted into the AAAU as a rack-mounted

sub-assembly.

Cooling Solutions

API has a range of cooling solutions to support different

platform applications that can either be implemented at QTRM

or at plank level.

QTRM

Each Quad Transmit Receive Module (QTRM) includes full

RF, DC, control functionality (logic interface), calibration and

BITE status for each TRM, thermal and current overload

protection, as well as receive and transmit functions.

Each eld-replaceable QTRM common module is factory

calibrated. The only set-up needed is a one-time laptop

upload of antenna offsets.

Active Antenna Array Unit (AAAU) Solutions