Integrating a high-density, full-matrix active phased array front-end into mobile or stationary host platforms requires well-defined boundaries across RF signaling, DC power delivery, command routing, and thermal management. Operating across the 15 GHz to 17 GHz band, the Ku-Band 1024-Channel Two-Dimensional Phased Array Antenna combines 1024 active channels, the antenna structure, TR modules, an internal 1-to-1024 power divider, and differential beam-forming networks into an integrated mechanical housing measuring 420 mm × 400 mm × 129 mm with a total mass of ≤17 kg (excluding external variable-frequency and digital signal processing units).
Platform Interfacing Boundaries for Full-Matrix 2D Arrays
The front-end assembly interfaces with platform-level subsystems through distinct physical and electrical boundaries:
Technical Specs & Engineering Support
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- Integrated Mechanical Packaging: The structural housing encapsulates the full 32 × 32 active aperture, TR modules, internal power divider, and differential network within a unified metallic enclosure that incorporates rear compartment structural components.
- Platform Subsystem Demarcation: The array interfaces directly with platform-level RF and signal-processing subsystems, while the external variable-frequency synthesizer and digital signal processor remain outside the internal mechanical envelope.
- Two-Dimensional Beam-Steering Coverage: The planar aperture supports coordinated electronic beam steering across ±45° in azimuth and ±45° in pitch, with a typical beam-pointing error of ≤0.2° across the scan range.
RF Interfaces and Excitation Drive Specifications
The RF subsystem defines the signal boundary between the array front-end and the platform-level RF hardware:
- RF Connector Configuration: The antenna uses SSMP-J connectors for RF signal routing, including dedicated ports for azimuth and pitch difference outputs.
- RF Input Drive Level: The internal distribution network is configured to accept a nominal RF excitation drive specified at 22 dBm ± 1.5 dBm across the 15 GHz to 17 GHz operating frequency range.
- Internal 1-to-1024 Distribution: An internal divider routes the single RF input to individual TR channels for amplification and phase control, reducing the need for external RF distribution hardware.
- Key Integration Reference Parameters: Primary electrical, interface, and mechanical integration specifications are summarized below:
| Parameter | Key Integration Specifications |
| Operating Frequency Band | 15 GHz – 17 GHz |
| RF Interface Connector | SSMP-J (including Azimuth/Pitch Difference Ports) |
| Input Excitation Level | 22 dBm ± 1.5 dBm |
| Full-Array Peak Output Power | ≥57 dBm |
| System EIRP (Normal) | ≥91 dBm (room temperature) |
| DC Power Supply Input Voltage | DC 18 V – 36 V |
| Maximum DC Power Consumption | ≤1300 W (under 25% transmission duty cycle) |
| Prime Power Interface | Dedicated J30J-4-pin high-current connector |
| Array Control Interface | Dedicated J30J_15TJL connector |
| Mechanical Dimensions (L × W × H) | 420 mm × 400 mm × 129 mm (includes rear compartment) |
| Total Assembly Mass | ≤17 kg (excludes external variable-frequency components and digital signal processor) |
DC Power Bus Architecture and Pulsed Load Management
The platform power distribution system must accommodate the specified 18 V to 36 V input range and the power demand of the 1024-channel transmitter:
- Input Voltage Range (18 V – 36 V DC): Internal power conditioning circuits accept an unregulated DC bus voltage from 18 V to 36 V DC.
- Prime Power Delivery Interface: Main DC power is supplied through a dedicated J30J-4-pin high-current connector designed for the specified DC power input during full-array transmission.
- DC Power Consumption Budget: Maximum DC power consumption is specified at ≤1300 W under a 25% operational transmission duty cycle.
- Pulsed Operation Demands: The transmitter architecture supports operating duty cycles up to 25%. Host platform power buses should be designed to provide adequate transient response and maintain the bus voltage within the 18 V to 36 V operating window during pulsed RF transmission.
Control, Mechanical, and Thermal Integration Requirements
Successful mechanical bay integration depends on aligning physical mounting and environmental limits with array design constraints:
- Command and Steering Interface: Beam steering coordinates, timing, and health-monitoring signals pass through a dedicated J30J_15TJL control connector.
- Physical Form Factor and Clearance: The unit maintains an overall envelope of 420 mm × 400 mm × 129 mm (inclusive of the rear compartment structural components), requiring structural consideration for its ≤17 kg mass during installation.
- Operating and Storage Thermal Boundaries: The unit is rated for an operating temperature range of -40 °C to +70 °C and an ambient storage range of -50 °C to +70 °C.
- Thermal Management Guidance: Platform designers should provide adequate thermal management at the mounting interface to remove the heat generated by the array when operating within its specified DC power budget (≤1300 W at a 25% duty cycle), ensuring the assembly remains within its operating window.
- Protective Cavity Finishes: The metal cavity features a colored conductive oxide layer, while the exterior antenna surface is coated with white primer.
Frequently Asked Questions (System Integration)
Q: Does the 1024-channel array require external power divider networks to distribute input RF excitation?
A: No. The antenna enclosure integrates an internal 1-to-1024 power divider module that distributes the incoming RF drive (specified at 22 dBm ± 1.5 dBm) across all 1024 active channels. External RF excitation connects directly through the designated SSMP-J RF interface, reducing the need for external distribution hardware.
Q: How should the host platform power supply be dimensioned for the 1024-channel pulsed load?
A: The platform power supply should be sized to deliver an unregulated DC voltage between 18 V and 36 V via the J30J-4-pin high-current connector, supporting up to 1300 W DC power during a 25% operational transmission duty cycle while keeping the array input voltage within its specified 18–36 V range during pulsed load transitions.
Q: What external subsystems are excluded from the antenna assembly envelope?
A: The ≤17 kg mechanical assembly integrates the radiating aperture, TR modules, internal power divider, and differential networks. External platform electronics—specifically the platform’s variable-frequency components, frequency synthesizer, and digital signal processor—are located off-array and interface via external cabling.