Wide Angle Scalar Feed Horns

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Why Choose Mi-Wave

Mi-Wave is a trusted manufacturer of RF, microwave, and millimeter-wave antennas and components, supporting commercial, government, and research systems worldwide. Our Series 263 wide-angle scalar feed horn antennas are engineered to deliver wide beamwidth coverage, stable radiation patterns, and reliable electrical performance in demanding high-frequency environments.

High-Frequency Engineering Expertise

With decades of experience in microwave and millimeter-wave design, Mi-Wave develops wide-angle scalar feed horn antennas optimized for low VSWR, controlled field distribution, and consistent gain across broad operating bandwidths. This expertise is critical in applications requiring wide beamwidths and precise reflector illumination, including low F/D parabolic and offset reflector systems.

Precision Manufacturing and Quality Control

Each Series 263 antenna is manufactured using precision machining and carefully controlled assembly processes to ensure repeatable electrical performance, mechanical stability, and long-term reliability in both laboratory and field-deployed systems.

Broad Frequency and Application Support

Mi-Wave supports wide-angle scalar feed horn antennas across a wide range of RF, microwave, and millimeter-wave frequency bands, making them suitable for reflector feed systems, communications, radar, telemetry, and test environments.

Custom Antenna Solutions

In addition to standard offerings, Mi-Wave provides custom wide-angle scalar feed horn antenna designs tailored to specific frequency ranges, beamwidth requirements, polarization options, waveguide interfaces, and mechanical constraints. Our sales engineering team works closely with customers to ensure seamless integration into complex antenna and reflector systems.

What Wide-Angle Scalar Feed Horn Antennas Do and Why They Matter

What They Do

Wide-angle scalar feed horn antennas are designed to radiate RF energy over a broad angular region while maintaining stable impedance matching, predictable gain, and controlled radiation patterns. Unlike standard horn antennas with narrower beams, wide-angle scalar feed horns intentionally produce large beamwidths, typically around 55°, to properly illuminate reflector systems and wide-coverage applications.

The scalar feed structure, consisting of carefully designed corrugations near the horn aperture, shapes the electromagnetic fields as energy transitions from the waveguide into free space. This results in:

• Low VSWR across wide bandwidths

• Stable phase center behavior

• Smooth, symmetrical radiation patterns

• Controlled sidelobe levels

These characteristics allow wide-angle scalar feed horns to efficiently couple energy into parabolic reflectors and offset reflectors without excessive spillover or illumination loss.

Why Wide-Angle Scalar Feed Horns Matter

Wide-angle scalar feed horn antennas are especially important in systems where wide beamwidth is required, such as low F/D ratio parabolic reflectors (F/D = 0.5 and 0.4) and offset reflector configurations. In these designs, a conventional narrow-beam horn would under-illuminate the reflector, reducing aperture efficiency and degrading overall system performance.

By providing the correct angular coverage, Series 263 wide-angle scalar feed horns:

• Ensure uniform reflector illumination

• Improve aperture efficiency and system gain

• Reduce spillover and pattern distortion

• Maintain consistent performance across frequency

• Simplify alignment and integration

These advantages are critical in communications, radar, telemetry, and test environments where predictable radiation behavior and repeatable performance directly impact system accuracy and reliability.

Features

• Wide beamwidth performance, typically around 55°, optimized for applications requiring broad angular coverage

• Low VSWR across the operating frequency band, ensuring efficient power transfer and minimal signal reflection

• Wideband electrical performance, allowing operation across multiple frequencies without retuning

• Scalar feed structure for controlled field distribution and improved impedance matching

• Stable gain and predictable radiation patterns across the operating band

• Controlled sidelobe levels, reducing spillover and improving system efficiency

• Polarization-stable design, supporting consistent performance in reflector feed applications

• High power handling capability, suitable for demanding transmit and receive systems

• Precision mechanical construction, ensuring repeatable electrical and mechanical performance

• Compatibility with standard waveguide interfaces

• Custom configurations available, including frequency range, beamwidth, polarization, and mechanical options

Applications

• Low F/D Parabolic Reflector Feed Systems
  Designed for applications requiring wide beamwidths (~55°), such as low F/D ratio parabolic reflectors (F/D = 0.5 and 0.4), ensuring proper reflector illumination and improved aperture efficiency.

• Offset Reflector Antennas
  Ideal for offset reflector configurations where wide angular coverage and controlled spillover are critical to overall antenna performance.

• RF and Microwave Communication Systems
  Supports systems requiring broad angular coverage with stable gain and predictable radiation behavior.

• Radar and Telemetry Systems
  Suitable for radar and telemetry applications that require wide illumination angles and stable radiation characteristics.

• Antenna Pattern Measurement and Characterization
  Commonly used in antenna test ranges and measurement setups requiring wide-angle reference antennas.

• Test and Measurement Environments
  Supports system calibration, validation, and verification in laboratory and field environments.

• Research and Development Platforms
  Well suited for R&D applications involving wide-angle radiation patterns and controlled electromagnetic field distribution.