Custom Frequency RF Cavity Bandpass Filter – High-Performance RF Filtering Solution

Overview

The Custom Frequency RF Cavity Bandpass Filter is a high-performance passive RF component designed to pass desired frequency signals while suppressing unwanted signals outside the specified passband. Featuring cavity resonator technology, low insertion loss, and strong out-of-band rejection, it helps improve signal quality and reduce interference in professional RF communication systems.

Available standard frequency ranges include 300–500 MHz, 700–1000 MHz, and 1300–1500 MHz. Custom frequency bands, connector types, power ratings, and mechanical dimensions are available to meet specific project requirements.

Key Features

• Custom Frequency Options: Standard frequency bands are available, with OEM/ODM customization for specific passband and stopband requirements.
• Low Insertion Loss: Insertion loss of ≤1.5 dB helps minimize signal attenuation within the passband.
• Strong Out-of-Band Rejection: Suppresses unwanted signals to improve RF signal purity and reduce interference.
• High Power Handling: Standard designs support 100 W or more, depending on the selected configuration.
• Low VSWR: VSWR of ≤1.3 supports efficient impedance matching and reduced signal reflection.
• Stable Passband: Intraband ripple of ≤1 dB helps maintain consistent signal transmission.
• Durable Metal Housing: The black metal cavity structure provides mechanical protection and electromagnetic shielding.
• Flexible Integration: RF connectors, enclosure dimensions, mounting arrangements, and other parameters can be customized.
• Industrial Operating Range: Designed for operation from -20°C to +60°C.

Technical Specifications

Product Type: RF Cavity Bandpass Filter
Available Frequency Bands: 300–500 MHz, 700–1000 MHz, 1300–1500 MHz
Insertion Loss: ≤1.5 dB
Intraband Ripple: ≤1 dB
VSWR: ≤1.3
Power Handling: ≥100 W for standard listed configurations
Operating Temperature: -20°C to +60°C
Housing Material: Metal cavity structure
Housing Color: Black
Input/Output Connectors: RF connectors; type configurable
External Dimensions: Customizable
Customization: Frequency, rejection characteristics, power rating, connectors, mechanical design, and branding

Out-of-Band Rejection

300–500 MHz Model:
• ≥40 dB at DC–100 MHz
• ≥40 dB at 700–3000 MHz

700–1000 MHz Model:
• ≥40 dB at DC–500 MHz
• ≥40 dB at 1300–3000 MHz

1300–1500 MHz Model:
• ≥50 dB at DC–1000 MHz
• ≥50 dB at 1800–3000 MHz

Note: Performance specifications may vary with the selected frequency band and customized configuration. Confirm the final passband, stopband, power rating, connectors, and test conditions with our engineering team before ordering.

Applications

• Wireless Communication Base Stations
• RF Repeaters and Signal Boosters
• Public Safety and Emergency Communication Systems
• Broadcast and RF Transmission Equipment
• Industrial Wireless Communication and Telemetry
• SCADA and Remote Monitoring Systems
• RF Front-End Modules
• RF Laboratory Test and Measurement Systems
• Customized Wireless Communication Equipment

Customization Options

This RF cavity bandpass filter supports OEM and ODM customization for different system requirements.

• Frequency: Specify the desired passband and stopband.
• RF Connectors: N-type, SMA, DIN, or other compatible connector options, subject to design.
• Power Handling: Request a suitable power rating for your RF system.
• Mechanical Design: Customize enclosure dimensions, mounting method, and layout.
• Appearance and Branding: Custom labels, logo engraving, and surface finish options.
• Filter Performance: Discuss insertion loss, rejection, and passband ripple targets with our engineers.

Please provide your operating frequency, required bandwidth, rejection targets, RF power level, connector type, and installation requirements when requesting a quotation.

FAQ

Q1: What does an RF cavity bandpass filter do?
A: It allows signals within a specified frequency band to pass while attenuating signals outside that band, helping reduce interference and improve signal quality.

Q2: Which frequency bands are available?
A: Standard options include 300–500 MHz, 700–1000 MHz, and 1300–1500 MHz. Other frequencies may be available through customization.

Q3: What is the maximum power handling capability?
A: The listed standard configurations support 100 W or more. The achievable power rating depends on the frequency, design, connectors, and operating conditions. Confirm your requirements before ordering.

Q4: What is the insertion loss?
A: The listed insertion loss is ≤1.5 dB. Confirm the guaranteed value for your selected configuration.

Q5: Can I customize the connectors?
A: Yes. N-type, SMA, DIN, and other connector options may be available depending on the design.

Q6: Can the filter be used outdoors?
A: The product is designed for an operating temperature range of -20°C to +60°C and has a metal housing. An IP rating is not specified, so confirm environmental sealing requirements before outdoor installation.

Q7: What information is needed for a custom quotation?
A: Please provide the center frequency or passband, stopband rejection requirements, RF power, connector type, dimensions, and intended application.

Q8: Do you support OEM and ODM orders?
A: Yes. Frequency, mechanical design, labeling, and other product parameters can be discussed with the engineering team.