X-Band Omnidirectional Antennas
Mi-Wave’s 267 Series WR-90 omnidirectional antennas are created with the end consumer in mind. We know you need and demand the absolute best when it comes to custom and stock antennas and we look to provide you with the best solutions possible. Some of the highlights of our omni antennas are:
Features
• Low VWSR
• Wide Bandwidths
• 360 degree Azimuth Beamwidths
• Variable Elevation Beamwidths
• 45 Degree Typical
Applications
• Surveillance networks
• Broadcast and Receiving Systems
• RF Probes
• Automotive Radar
The standard models shown represent only part of Mi-Wave’s broader probe antenna capabilities. Custom configurations are available to support specific frequency bands, interfaces, and application requirements, enabling optimized solutions for specialized RF, microwave, and millimeter-wave systems.
*Actual product may be different from the image shown per customers specifcations
*All data presented is collected from a sample lot.
* Actual data may vary unit to unit, slightly.
*All testing was performed under +25 °C case temperature.
*Consult factory to confirm if material, plating, size, shape, orientation and any electrical parameter is critical for the application as website information is for reference only.
*Millimeter Wave Products, Inc. reserves the right to change the information presented on website without notice as we continue to enhance the performance and design of our products.
Key Features & Performance Benefits
True 360° Azimuth Coverage
Provides uniform radiation in all horizontal directions, eliminating the need for antenna rotation or mechanical scanning.
Wideband Frequency Coverage (8.2–140 GHz)
Supports microwave and millimeter-wave systems across a broad frequency range, enabling flexible multi-band operation.
Stable Radiation Patterns
Designed to maintain consistent omnidirectional coverage with minimal variation across frequency, ensuring reliable system performance.
Low VSWR and Efficient Power Transfer
Optimized impedance matching minimizes reflections and maximizes signal transmission efficiency.
Consistent Gain Performance
Delivers predictable gain across the operating band, supporting stable communication links and measurement accuracy.
No Mechanical Steering Required
Provides full-area coverage without moving parts, improving reliability and simplifying system design.
Compact and Integration-Friendly Designs
Available in configurations suitable for both laboratory setups and field-deployed systems with minimal footprint.
Coaxial and Waveguide Interfaces Available
Supports flexible integration into a wide range of RF, microwave, and millimeter-wave systems.
Reliable Performance in Dynamic Environments
Well suited for applications where signal direction changes or coverage must remain continuous.
Custom Engineering Available
Supports custom frequency bands, mounting options, environmental sealing, and mechanical configurations.
Applications
Omnidirectional Antenna Applications
Mi-Wave Omnidirectional Antennas are used in RF, microwave, and millimeter-wave systems requiring uniform signal coverage, stable performance, and continuous communication in all directions.
Communications Systems
Designed for systems requiring consistent signal coverage across a wide area.
Typical applications include:
- Wireless communication links
- Multi-node communication networks
- Mobile communication platforms
- Distributed RF systems
- Broadband communication testing
Telemetry Systems
Widely used in telemetry applications where continuous signal transmission and reception are required.
Typical applications include:
- Data transmission systems
- Remote monitoring platforms
- UAV and autonomous system telemetry
- Sensor networks
- Real-time data acquisition
RF Monitoring and Surveillance
Supports systems that require continuous signal detection from all directions.
Typical applications include:
- Spectrum monitoring
- Signal detection and analysis
- RF surveillance systems
- Interference monitoring
- Situational awareness systems
RF Test & Measurement
Used in environments where uniform field distribution and consistent signal exposure are required.
Typical applications include:
- RF system testing
- Antenna validation
- Signal coverage testing
- Lab-based measurement systems
- Calibration setups
Radar and Detection Systems
Supports radar and sensing applications where broad coverage is required.
Typical applications include:
- Short-range radar systems
- Detection and tracking systems
- RF sensing platforms
- Experimental radar setups
Research and Development (R&D)
Used in research environments for broadband RF experimentation and system development.
Typical applications include:
- Academic research programs
- Government research labs
- Prototype system validation
- Wireless propagation studies
- Advanced RF experiments
Frequently Asked Questions (FAQ)
What is an omnidirectional antenna?
An omnidirectional antenna radiates RF energy uniformly in all directions within the horizontal plane, providing 360-degree azimuth coverage.
What are omnidirectional antennas used for?
They are used in applications requiring continuous signal coverage, such as communications systems, telemetry, RF monitoring, and testing environments.
What frequency range do Mi-Wave omnidirectional antennas support?
Mi-Wave Series 267 omnidirectional antennas operate from 8.2 GHz to 140 GHz.
How does an omnidirectional antenna differ from a directional antenna?
Omnidirectional antennas provide uniform coverage in all directions, while directional antennas focus energy in a specific direction for higher gain.
Do omnidirectional antennas have lower gain than directional antennas?
Yes. Because energy is distributed evenly, omnidirectional antennas typically have lower gain but wider coverage.
Are these antennas suitable for mobile or dynamic environments?
Yes. They are ideal for systems where signal direction changes frequently, eliminating the need for repositioning.
What interfaces are available?
These antennas are available with coaxial and rectangular waveguide interfaces for flexible system integration.
Can these antennas be used for RF testing?
Yes. They are commonly used in RF measurement and test environments where consistent signal distribution is required.
Are omnidirectional antennas polarization specific?
They are typically designed for linear polarization, though custom options may be available.
Can Mi-Wave omnidirectional antennas be customized?
Yes. Custom configurations are available for frequency range, mounting, environmental conditions, and mechanical design.
Omnidirectional Antenna Engineering Calculators
These RF engineering calculators help estimate antenna performance for omnidirectional antennas, including communications systems, telemetry networks, RF monitoring platforms, radar systems, and microwave and millimeter-wave test environments. Use them to calculate antenna gain, wavelength, free-space path loss, effective aperture, aperture size required for target gain, and approximate beamwidth across RF, microwave, and millimeter-wave frequencies.
Omnidirectional antennas are designed for uniform 360-degree azimuth coverage, stable signal distribution, low VSWR, and reliable multi-directional performance. A typical starting efficiency range for many systems is 0.50 to 0.75.
Antenna Gain Calculator
Antenna Gain (dBi):
Approximate Vertical Beamwidth Calculator
Aperture Size Required for Target Gain
Antenna Effective Aperture Calculator
Effective Aperture (m²):
Free Space Path Loss Calculator
RF Wavelength Calculator
Wavelength (mm):
Glossary of Omnidirectional Antenna Terms
Antenna Fundamentals
Omnidirectional Antenna
An antenna that radiates RF energy uniformly in all directions in the horizontal plane.
Directional Antenna
An antenna that focuses energy in a specific direction for higher gain.
Radiation Pattern
The spatial distribution of radiated RF energy.
Azimuth Coverage
Horizontal coverage of an antenna, typically 360° for omnidirectional designs.
Electrical Performance
Gain (dBi)
A measure of how effectively an antenna radiates energy in a given direction.
VSWR (Voltage Standing Wave Ratio)
Indicates how well the antenna is impedance matched.
Return Loss
The amount of signal reflected due to impedance mismatch.
Bandwidth
The frequency range over which the antenna performs effectively.
Efficiency (η)
The ratio of radiated power to input power.
RF and Frequency
Radio Frequency (RF)
Electromagnetic signals used for communication and sensing.
Microwave Frequencies
1 GHz to 30 GHz.
Millimeter-Wave (mmWave)
30 GHz to 300 GHz.
Frequency Range
The operational span of frequencies supported by the antenna.
Wavelength (λ)
The physical length of an RF wave cycle.
Antenna Behavior
Uniform Radiation
Equal signal distribution in all directions.
Coverage Area
The physical region where the antenna provides signal.
Beamwidth
For omnidirectional antennas, typically narrow vertically and wide horizontally.
Polarization
Orientation of the electric field, usually linear.
System and Applications
Telemetry
Transmission of data from remote systems.
RF Monitoring
Detection and analysis of RF signals.
Communications Systems
Systems used to transmit and receive RF signals.
Test & Measurement Systems
Equipment used to evaluate RF performance.
Radar Systems
Systems that detect objects using RF signals.
R&D (Research and Development)
Experimental and engineering development environments.
Engineering Concepts
Impedance Matching
Ensuring maximum power transfer between RF components.
Signal Coverage
The area over which signals are effectively transmitted.
System Integration
Combining components into a working RF system.
Dynamic Environment
Conditions where signal direction or position changes frequently.
| Model | Band Type | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Azimuth Beamwidth (Degrees) | Vertical Beamwidth (Degrees) | Return Loss (dB) | Power Handling (Watts) | Gain (dB) typical | Polarization | RF Ports | LINK |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 267-5/40/KF | Wideband | 5 | 40 | 360 | 45 | 14 | 5 | 3 to 4 | Vertical | K-Female Connector | |
| 267-5/50/2.4mmF | Wideband | 5 | 50 | 360 | 45 | 14 | 5 | 3 to 4 | Vertical | 2.4mm Female Coax Connector | |
| 267-5/70/1.85mmF | Wideband | 5 | 70 | 360 | 45 | 14 | 5 | 3 to 4 | Vertical | 1.85mm Female Coax Connector | |
| 267X/SMAF | X-Band | 8.2 | 12.4 | 360 | 45 | 17 | 5 | 3 to 4 | Vertical | SMA-Female Connector | |
| 267Ku/SMAF | Ku-Band | 12 | 18 | 360 | 45 | 17 | 5 | 3 to 4 | Vertical | SMA-Female Connector | |
| 267K/595 | K-Band | 18 | 26.5 | 360 | 45 | 20 | 5 | 3 to 4 | Vertical | WR-42 Waveguide, UG-595/U Flange | |
| 267A/599 | Ka-Band | 26.5 | 40 | 360 | 45 | 20 | 5 | 3 to 4 | Vertical | WR-28 Waveguide, UG-599/U Flange | |
| 267B/383 | Q-Band | 33 | 50 | 360 | 45 | 20 | 5 | 3 to 4 | Vertical | WR-22 Waveguide, UG-383/U Flange | |
| 267U/383 | U-Band | 40 | 60 | 360 | 45 | 20 | 5 | 3 to 4 | Vertical | WR-19 Waveguide, UG-383/U-M Flange | |
| 267V/385 | V-Band | 50 | 75 | 360 | 45 | 20 | 3 | 3 to 4 | Vertical | WR-15 Waveguide, UG-385/U Flange | |
| 267E/387 | E-Band | 60 | 90 | 360 | 45 | 20 | 2 | 3 to 4 | Vertical | WR-12 Waveguide, UG-387/U Flange | |
| 267W/387 | W-Band | 75 | 110 | 360 | 45 | 20 | 1 | 3 to 4 | Vertical | WR-10 Waveguide, UG-387/U-M Flange | |
| 267D/387 | D-Band | 110 | 170 | 360 | 45 | 20 | 0.01 | 3 to 4 | Vertical | WR-06 Waveguide, UG-387/U-M Flange |
*All data presented is collected from a sample lot.
* Actual data may vary unit to unit, slightly.
*All testing was performed under +25 °C case temperature.
*Consult factory to confirm if material, plating, size, shape, orientation and any electrical parameter is critical for the application as website information is for reference only.
*Millimeter Wave Products, Inc. reserves the right to change the information presented on website without notice as we continue to enhance the performance and design of our products.
WR-90, X-Band Omnidirectional Antennas
If you are looking for the best omnidirectional antennas, then you’ve come to the right place. At Millimeter wave products Inc. (Mi-Wave) we specialize in manufacturing the highest quality antennas for many needs.
What makes our omnidirectional antennas the preferred choice?
Mi-Wave’s 267 Series omni antennas are fabricated right in our facility in St Petersburg, Fl. Our x-band omnidirectional antennas are offered with either a coaxial or rectangular waveguide interface. They provide a complete azimuth coverage of 360˚. These omnidirectional antennas cover a bandwidth up to full waveguide bands with unnoticeable performance degradation towards the higher and lower ends of the frequency range. They are also constructed with precision machined housings and a protective radome.
Custom frequencies can be requested.
