4-18GHz High Pass Filter SMA-Female Small Size RF Filter
The 4-18GHZ High Pass Filter rolling off our Chengdu line is not a catalog gamble—it is the product of twenty years of cavity milling, plating and soldering under one roof. Every 4-18GHZ High Pass Filter begins as a solid 6061-T6 block, is sliced by 5-axis CNC, and hand-tuned with Invar screws before it qualifies for export. That sequence is why the 4-18GHZ High Pass Filter carries a one-year warranty and why 80 % of our shipments land in Europe and North America.
Main indicators
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Items |
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Passband |
4-18GHz |
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Insertion Loss in Passbands |
≤2dB |
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VSWR |
≤1.5:1 |
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Impedance |
50 OHMS |
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Connectors |
SMA-Female |
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Rejection |
≥40dBc@2 -3GHz |
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Temperature Range |
-30℃~﹢70℃ |
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Size |
As below ↓ |
Outline Drawing
Measured Performance
Across 4-18 GHz the 4-18GHZ High Pass Filter exhibits Insertion Loss ≤2 dB at mid-band and ≤2.5 dB at the edges. VSWR stays ≤1.5:1, so the 4-18GHZ High Pass Filter presents a near-perfect 50 Ω match to MMIC amplifiers. Below 3 GHz the device delivers Rejection ≥40 dBc, sweeping unwanted VHF and UHF energy back to the source. A Keysight PNA-X scan accompanies each 4-18GHZ High Pass Filter, signed by the technician who tuned it.
Inside the Housing
A stepped ridge waveguide launch feeds into three coupled cavities; the geometry eliminates suspended substrates that crack under shock. Cover seam is electron-beam welded, giving the 4-18GHZ High Pass Filter a helium leak rate below 1 × 10⁻⁹ Pa·m³/s. Overall size is 58 × 22 × 10 mm—smaller than a matchbox—so the 4-18GHZ High Pass Filter slips into phased-array tiles without disturbing lattice spacing.
Company Advantages
Twenty-year heritage in high-frequency hardware.
In-house CNC, plating, welding, test—lead time 15 days.
Insertion Loss ≤2 dB, VSWR ≤1.5:1, Rejection ≥40 dBc guaranteed on every 4-18GHZ High Pass Filter.
Custom cut-off, mounting flanges, SMA or 2.92 mm connectors at no MOQ.
Competitive EXW pricing
Lifetime English-speaking support; data sheets ship with each 4-18GHZ High Pass Filter.
If your signal path begins at 4 GHz and cannot tolerate roll-off or micro-cracks, specify the Keenlion 4-18GHZ High Pass Filter. Contact us today for free samples, individual test curves and factory direct pricing
