Customizable RF Cavity Bandpass Filter – Up to 100W

Overview

The Customizable RF Cavity Bandpass Filter is a high-performance RF component designed for wireless communication systems, RF signal processing, telemetry, and professional wireless video transmission. It allows desired frequencies to pass while suppressing unwanted signals, helping improve signal quality and reduce interference in demanding RF environments.

Featuring a precision-engineered cavity structure, this filter offers low insertion loss, excellent out-of-band rejection, stable passband performance, and high RF power handling. The center frequency, bandwidth, connector type, and mechanical configuration can be customized to meet specific system requirements.

With support for RF power handling up to 100W in the specified configuration, this cavity bandpass filter is suitable for professional RF transmitters, wireless communication links, base stations, repeaters, and drone video transmission systems.

Key Features

• Customizable Operating Frequency: Available in 175 MHz, 320 MHz, 610 MHz, and custom frequency configurations.

• Low Insertion Loss: Insertion loss of ≤ 1.0 dB helps minimize signal attenuation.

• Excellent Out-of-Band Rejection: Provides ≥ 40 dB rejection at offsets of ±40 MHz from the center frequency.

• Stable Passband Performance: In-band ripple of ≤ 0.5 dB supports consistent signal transmission.

• High RF Power Handling: Supports up to 100W in the specified configuration.

• Low VSWR: VSWR ≤ 1.2 helps minimize reflected power when properly impedance-matched.

• Flexible Customization: Center frequency, bandwidth, RF connectors, and mechanical dimensions can be tailored to project requirements.

• Durable Metal Housing: Aluminum alloy construction provides mechanical strength and effective RF shielding.

• Wide Operating Temperature Range: Designed to operate from -35°C to +65°C.

• Professional RF Integration: Suitable for wireless video links, communication transmitters, repeaters, and RF front-end systems.

Technical Specifications

Filter Type: RF Cavity Bandpass Filter

Available Frequency Options: 175 MHz, 320 MHz, 610 MHz, Custom Frequency

Reference Center Frequency: 320 MHz

Reference Bandwidth: 8–10 MHz

Insertion Loss: ≤ 1.0 dB

In-Band Ripple: ≤ 0.5 dB

VSWR: ≤ 1.2

Out-of-Band Rejection: ≥ 40 dB at Fo ± 40 MHz

RF Power Handling: Up to 100W for the specified configuration

Operating Temperature: -35°C to +65°C

RF Connector: SMA-50K

Housing Material: Aluminum Alloy

Dimensions: 199 × 120 × 35 mm

Weight: Varies by configuration

Customization: Frequency, bandwidth, connectors, and mechanical design

Note: Electrical specifications may vary depending on the selected frequency and customized configuration. Please confirm the final specifications with our team before ordering.

Applications

Wireless Video Transmission

Helps suppress unwanted RF signals in COFDM wireless video transmitters and receivers, supporting stable video links.

Drone and UAV Communication Systems

Suitable for RF filtering in drone video downlinks, telemetry links, and other wireless communication equipment.

RF Transmitters and Power Amplifiers

Provides frequency selection and unwanted-signal suppression in compatible RF transmitter chains and power amplifier systems.

Wireless Base Stations

Helps improve frequency selectivity and reduce interference in base station RF front ends.

Wireless Repeaters and Relay Systems

Supports channel filtering and interference reduction in repeater and relay equipment.

Public Safety and Industrial Communications

Suitable for professional radio systems, telemetry, remote monitoring, and industrial wireless applications.

RF Testing and Measurement

Can be integrated into RF test benches, laboratory equipment, and production testing systems that require frequency-selective filtering.

Customization Options

This RF cavity bandpass filter supports customization to meet different RF system requirements.

• Frequency: Select 175 MHz, 320 MHz, 610 MHz, or request a custom center frequency.

• Bandwidth: Specify the required passband width for your application.

• RF Connectors: SMA and other connector types may be available depending on the design.

• Power Handling: Confirm the required operating power before selecting a configuration.

• Mechanical Design: Discuss housing dimensions, mounting requirements, and installation constraints.

• Rejection Performance: Specify the unwanted frequency ranges and required attenuation levels.

For custom orders, please provide your operating frequency, bandwidth, RF power, connector type, and out-of-band rejection requirements.

Why Choose This RF Cavity Bandpass Filter?

This filter combines precision frequency selection, low insertion loss, high power handling, and flexible customization in a durable metal enclosure.

Its cavity-based design is suitable for RF systems that require reliable frequency control and interference suppression. Custom configurations allow engineers and system integrators to match the filter to their transmitter, receiver, or RF front-end architecture.

Whether you are developing a wireless video link, a drone communication system, a base station, or an industrial RF solution, this customizable cavity bandpass filter offers a practical option for professional RF integration.

FAQ

Q1: Can I order a custom frequency?

Yes. Custom center frequencies are available. Please provide your required frequency and bandwidth so that we can confirm the appropriate design.

Q2: What standard frequency options are available?

The listed options are 175 MHz, 320 MHz, 610 MHz, and Custom Frequency. Availability and final specifications should be confirmed for the selected configuration.

Q3: What is the maximum RF power this filter supports?

The reference configuration supports up to 100W. Other power ratings may be available depending on the frequency, bandwidth, and mechanical design.

Q4: What is the insertion loss?

The reference specification lists insertion loss of ≤ 1.0 dB. Actual performance should be confirmed for your selected frequency and configuration.

Q5: How much out-of-band rejection does it provide?

The reference specification lists ≥ 40 dB rejection at ±40 MHz from the center frequency. If you require rejection at other frequency offsets, please specify them when requesting a quotation.

Q6: Can I customize the RF connectors?

Yes. Connector options can be discussed during the customization process. The reference configuration uses SMA-50K connectors.

Q7: Is this filter suitable for drone video transmission?

Yes. It is suitable for compatible drone and UAV RF communication systems, including wireless video transmission links. Ensure that the frequency, bandwidth, power rating, and connectors match your equipment.

Q8: What information should I provide for a custom quotation?

Please provide the center frequency, bandwidth, input power, desired out-of-band rejection, connector type, and any mechanical or environmental requirements.

Ordering Information

Before placing a custom order, please confirm the required operating frequency, bandwidth, RF power level, connector type, and rejection requirements.

For applications requiring precise RF performance, we recommend confirming the complete electrical specifications and mechanical configuration with our sales team before purchase.