Integrating a 256-channel active array requires clearly defined RF, power, control, mechanical, and thermal interfaces between the antenna front-end and the host platform. In radar tracking and directional communication applications, the Ku-band 256-channel two-dimensional phased array antenna consolidates 256 active channels, an antenna-in-package (AIP) module, an internal RF power divider, and control circuitry into a unified 220 mm × 310 mm × 54 mm enclosure weighing ≤3 kg, providing a defined integration boundary for the host platform.
Host Platform Interfacing for 2D Active Arrays
The host platform does not directly access the 16 × 16 internal channel architecture; integration is accomplished through defined RF, power, control, and mechanical boundaries:
Technical Specs & Engineering Support
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- Integrated Array Structure: The chassis encloses the antenna structure, AIP module, internal power divider module, and sum/difference network within a single housing, providing a defined integration boundary for the host platform.
- Defined External Interfaces: The RF, power, and control functions are exposed through defined external interfaces.
- Aperture and Steering Boundary: The planar radiating aperture integrates 256 elements in a 16 × 16 symmetric grid, supporting electronic beam steering of ±45° in azimuth and ±40° in pitch.
RF Boundary and Input Drive Requirements
The RF interface establishes the signal boundary between external exciter/receiver stages and the array front-end:
- RF Connector Standard: The RF interface uses an SMA-J connector for the Ku-band RF path across the 15 GHz to 17 GHz operating band.
- Input Excitation Level: The array accepts an RF input drive level of 20 dBm ± 1 dBm.
- Internal Distribution and Transmit Levels: The antenna front-end incorporates an internal RF power divider, with the RF drive brought to the external interface through the specified SMA-J connector. Downstream system designers should account for the specified transmit output levels:
| Parameter | Specification / Requirement |
| Operating Frequency Band | 15 GHz – 17 GHz |
| Input Excitation | 20 dBm ± 1 dBm |
| Single-Channel Peak Power | ≥27 dBm |
| Full Array Peak Power | ≥51 dBm |
| System EIRP (Normal) | ≥79 dBm (room temperature) |
Power Bus Boundary and Pulsed Operation Constraints
Operating active solid-state amplification channels under pulsed conditions requires proper DC bus provisioning:
- Prime Power Bus (DC 18 V – 36 V): The 18–36 V DC input range provides flexibility for integration with different host-platform power architectures.
- Prime Power Interface: Prime DC power is provided through the dedicated J30J_04P04P000C00000 high-current connector.
- Specified Power Consumption: The specified power consumption is ≤200 W at a 20% transmitting duty cycle.
- Transmitting Duty Cycle Limit: The front-end supports transmitting duty cycles of up to 25%. The host power architecture should be designed to maintain the required 18–36 V input range under the specified operating conditions.
Control, Mechanical, and Thermal Boundaries
System engineers must align host installation envelopes with the array’s physical and environmental constraints:
- Control Interface: A dedicated multi-pin J30J_15ZK connector provides the control interface for the active array.
- Mechanical Envelope & Mass: The unit measures 220 mm × 310 mm × 54 mm (±0.5 mm) with a total mass of ≤3 kg. The compact enclosure supports integration where platform mass and installation envelope are constrained.
- Environmental Ratings: The subsystem is rated for an operating temperature range of -40 °C to +70 °C and a storage temperature range of -50 °C to +70 °C.
- Thermal Management Boundary: System designers should implement appropriate thermal management at the platform interface to manage the thermal load associated with operation at the specified power-consumption level, maintaining the assembly within its specified operating temperature range.
- Surface Finish: The metal cavity features a colored conductive oxide finish, while the external antenna face uses a white primer.
Frequently Asked Questions (System Integration & Electrical Boundaries)
Q: What external RF feed network is required to drive the 256-channel array?
A: The antenna front-end incorporates its own internal RF power divider, so the host platform supplies the specified RF drive through the external SMA-J interface rather than distributing the drive individually to the internal T/R channels.
Q: How should the host power supply be configured for pulsed operation?
A: The platform must supply DC 18 V to 36 V via the J30J_04P04P000C00000 high-current connector. The host power architecture should be designed to supply the specified 18–36 V input range and accommodate ≤200 W power consumption at a 20% transmit duty cycle, with operation supported up to 25% duty cycle.
Q: What thermal considerations must be addressed during platform installation?
A: System designers should provide appropriate thermal management at the platform interface to manage the thermal load associated with operation at the specified power-consumption level, keeping the assembly within its specified operating temperature range of -40 °C to +70 °C.