The 4500-5900MHz LC Filter achieves precision bandpass filtering through optimized LC network design, enabling minimal-attenuation transmission within 4500-5900MHz while suppressing out-of-band interference (>40dB rejection at ±100MHz). This LC Filter integrates high-Q components to minimize insertion loss and maximize rejection, preserving signal integrity. Its electromagnetic shielding provides dual defense—blocking external noise while the LC Filter’s selectivity eliminates residual interference. With precise 50Ω impedance matching, reflections and distortion are prevented. Robust construction ensures thermal/mechanical stability (-40°C to +85°C), eliminating frequency drift. Together, these features make this LC Filter a reliable solution for interference-critical communications.

LC Filter Features

Precision Bandpass Filtering
The 4500-5900MHz LC Filter employs advanced LC (inductor-capacitor) network design to create a sharp frequency response curve. This precision bandpass characteristic allows signals within the 4500-5900MHz range to pass with minimal attenuation while effectively suppressing frequencies outside this band. The filter achieves steep roll-off characteristics (typically >40dB rejection at ±100MHz offset), creating a protective frequency "window" that prevents adjacent channel interference.

High-Q Component Integration
By utilizing high-quality factor (Q) components, the LC Filter minimizes insertion loss within the passband while maximizing out-of-band rejection. The high-Q inductors and capacitors reduce energy dissipation, maintaining signal integrity while simultaneously blocking unwanted frequencies. This dual benefit ensures that desired signals remain strong while interference sources are significantly attenuated.

Electromagnetic Shielding Design
The LC filter's compact housing incorporates electromagnetic shielding that prevents external RF noise from coupling into the signal path. This shielding, combined with the LC network's inherent frequency selectivity, creates a two-stage defense against interference—first by blocking external noise and second by filtering out any residual unwanted frequencies.

Impedance Matching Optimization
Precise impedance matching (typically 50Ω) throughout the LC filter's design minimizes signal reflections that can cause intermodulation distortion. By maintaining consistent impedance characteristics, the LC Filter prevents the creation of new interference products within the communication system, preserving signal purity.

Thermal and Mechanical Stability
The LC filter's robust construction ensures consistent performance across temperature variations (-40°C to +85°C) and mechanical stresses. This stability prevents frequency drift that could allow interference to enter the passband, maintaining reliable interference suppression in diverse operating environments.

Factory advantages

Si Chuan Keenlion Microwave a large selection in narrowband and broadband configurations, covering frequencies from 0.5 to 50 GHz. They are designed to handle from 10 to 30 watts input power in a 50-ohm transmission system. Microstrip or stripline designs are utilized, and optimized for best performance.

We can also customize RF LC Filter according to your requirements. You can enter the customization page to provide the specifications you need.
https://www.keenlion.com/customization/
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Sichuan Keenlion Microwave Technology Co., Ltd.