Shenzhen factory · Indoor cavity filters, duplexers and combiners · EXW or FOB Shenzhen+86 186 8871 8926

Cavity filters · Shenzhen · Thirty years

Cavity filters for LTE, 5G and in-building radio.

Kangxuntong builds cavity bandpass filters, diplexers and multi-band combiners in Shenzhen. Documented passbands run from 135 MHz to 6 GHz. The indoor cellular line is concentrated from 700 MHz upward. Each shipment includes a network-analyzer test report.

Shelf cavity hardware, photographed in the factory.
700B28
800B20 / B5
900B8
1800B3
2100B1
2600B7
3.5 GHzn78
5 GHzWi-Fi

Three shelf families

The catalog follows the specifications already written for current products.

01

Bandpass filters

Single-band cavities from 703 MHz to 3.8 GHz, plus a low-loss 2.4 GHz unit. Rejection tables are on each datasheet.

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02

Combiners

Two-port and four-port cavity combiners for 700 MHz through n78 and 5 GHz Wi-Fi.

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03

Diplexer

5150–5370 MHz and 5450–5850 MHz in one housing, 80 dB between passbands.

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Rev ADatasheets in this catalog
135 MHz–6 GHzDocumented passbands
50 ΩN and SMA ports
VNATest report with shipment

What a buyer can hold us to

Indoor DAS, repeater remotes, and band cleanup around LTE and 5 GHz Wi-Fi.

Numbers you can test

Insertion loss, ripple, VSWR and rejection on the datasheet are the limits from the factory specification for that model. Return loss is the calculated equivalent of VSWR ≤ 1.3.

A test report leaves with the unit

Tuning is done on a vector network analyzer. The report covers the electrical rows. Low PIM at ≤ −150 dBc @ 2×43 dBm is an order option, measured when it is ordered.

Drawings, not slogans

Outline drawings from the specification are printed on the datasheet, with mounting holes where the drawing states them.

Small-batch custom bands

Send the band plan, rejection, power, connector and envelope. The quotation states the lead time. We do not print a universal lead time here.

Tuning on a vector network analyzer.
Combiners and bandpass units on the bench.