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891-903MHZ/936-948MHZ Cavity Diplexer Factory Built for RX TX Isolation
Our 891-903mhz/936-948mhz cavity diplexer splits rx and tx paths with precision. features include:• rx passband: 891-903mhz with ≤1db insertion loss• tx passband: 936-948mhz with ≤1db insertion loss• ≥65db rejection between bands• vswr ≤1.3:1• handles 10w forward power• ...Read more -
What is a 3dB hybrid coupler? 700MHz-4200MHz 3dB Hybrid Coupler Explained
A 3dB hybrid coupler is a passive four-port device that splits input power equally while maintaining a 90° phase difference between outputs. The 700MHz-4200MHz 3dB Hybrid Coupler from Keenlion performs this function across the entire cellular, LTE and 5G spectrum, making...Read more -
What is the purpose of a cavity resonator? 2878-2882MHz Cavity Filter in Modern Passive Networks
A cavity resonator stores RF energy in a standing-wave pattern and returns it only at the intended frequency. The 2878-2882MHz Cavity Filter produced by Chengdu-based Keenlion applies this principle through a quarter-wave coaxial cavity: silver-plated walls define a 2880...Read more -
What should my 4-18GHz high pass filter be set at?
Keenlion’s 4-18GHz High Pass Filter prioritizes stability and compatibility. Its passband (4-18GHz) aligns with many international high-frequency standards, ensuring seamless integration into existing systems. Manufactured in Keenlion’s Chengdu factory, the 4-18GHz High ...Read more -
What does the nasal cavity filter for 2878-2882MHz?
Chengdu, September 22, 2025 – Keenlion Microwave Technology completed the first production run of its 2878-2882 MHz cavity filter last month. Designed for small cell and IoT radios, this compact filter transmits signals in the 2.48 GHz band without leaking into the adjac...Read more -
Sichuan Keenlion to Showcase Next-Gen Microwave Technology at Jaarbeurs Utrecht
ichuan Keenlion Microwave Technology Co., Ltd. will return to Europe this September and occupy stand A119 at JAARBEURS UTRECHT, THE NETHERLANDS from 21-26 September 2025. Engineers, distributors and system integrator...Read more -
What a Combiner in RF? Keenlion’s 703-2689.9 MHz 4-Band RF Combiner Delivers ≤2 dB Loss
What a combiner in RF? It is a passive device that merges several frequency bands into one feed line while maintaining isolation. Keenlion’s latest 703-2689.9 MHz 4-band RF Combiner answers that question with laboratory-verified Insertion Loss ≤2.0 dB, Ripple ≤1.5:1 dB a...Read more -
How Do RF Cavity Filters Work? Keenlion Explains with New 471-481MHz Design
An RF Cavity Filter works by storing energy in a resonant metallic cavity and releasing only the desired frequency while reflecting the rest. In Keenlion’s new 471-481 MHz Cavity Filter, a precisely machined aluminum chamber acts as a high-Q resonator, permitting signals...Read more -
703-2689.9MHZ 4 Band Combiner – Keenlion Factory Solution for Multi-Band Efficiency
The 703-2689.9MHZ 4 Band Combiner is the newest member of Keenlion’s passive portfolio, engineered to merge four discrete cellular, LTE and 5G bands into a single feed without compromise. Built inside our 20 years old, ISO-9001 certified plant, every 703-2689.9MHZ 4 Band...Read more -
What is the Q Factor of a Cavity Filter? Keenlion’s 975-1005MHz Design Achieves ≤1.0dB Insertion Loss
Q Factor: The Efficiency Engine of Cavity FiltersThe Q Factor (Quality Factor) defines a Cavity Filter’s ability to store energy versus dissipate it. For Keenlion’s 975-1005MHz Cavity Filter, a high Q Factor (>5,000) directly minimizes Insertion Loss to ≤1.0 dB—valida...Read more -
What is the Insertion Loss of a Cavity Filter? Keenlion Confirms ≤1.0 dB for 975-1005 MHz Model
Keenlion’s newly released 975-1005 MHz Cavity Filter answers with an unequivocal insertion loss ≤1.0 dB across the entire 30 MHz bandwidth.In our ISO-9001 laboratory, 100 production samples of the 975-1005 MHz Cavity Filter were swept on a Keysight PNA-X. Every Cavity Fi...Read more -
What the Return Loss of a Cavity Filter? Keenlion Confirms ≥15 dB for New 975-1005MHz Cavity Filter
When engineers ask “What the return loss of a cavity filter?”, they are really asking for the guarantee that precious signal power is not reflected back to the source. Keenlion’s latest 975-1005 MHz Cavity Filter answers that question with a decisive ≥15 dB return loss a...Read more
Sichuan Keenlion Microwave Technology Co., Ltd.
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