891-903MHz/936-948MHz Cavity Diplexer Microwave Cavity Duplexer Diplexer
Advanced Cavity Diplexer for 891-903MHz/936-948MHz frequency bands
• Cavity Diplexer splits 891-903 MHz (Rx) and 936-948 MHz (Tx) with ≤1 dB insertion loss each side
• ≥65 dB rejection across opposite bands • VSWR ≤1.3:1 on both ports • 10 W power handling • SMA-F terminations
• -20 °C to +65 °C operating range • Black-paint aluminium housing • Samples in stock • Competitive factory prices
• Professional after-sales support • 20-year Chengdu manufacturing heritage • Full custom frequency, connector & mounting options
Cavity Duplexer Main Indicators
|
Number |
Items |
Specifications |
|
|
1 |
Cavity Diplexer |
Rx |
Tx |
|
2 |
Centre Frequency |
897MHz |
942MHz |
|
3 |
Passband |
891-903MHz |
936-948MHz |
|
4 |
Insertion Loss |
≤1dB |
≤1dB |
|
5 |
VSWR |
≤1.3:1 |
≤1.3:1 |
|
6 |
Rejection |
≥65dB @936-948 MHz |
≥65dB @891-903 MHz |
|
7 |
Impedance |
50 Ohms |
|
|
8 |
Input & Output Termination |
SMA Female |
|
|
9 |
Operating Power |
10W |
|
|
10 |
Operating Temperature |
-20℃ To +65℃ |
|
|
11 |
Material |
Aluminum |
|
|
12 |
Surface Treatment |
Black Paint |
|
|
13 |
Size |
As below ↓（±0.5mm） Unit/mm |
|
Outline Drawing
Precise Electrical Response
Our 891-903MHz/936-948MHz Cavity Diplexer uses quarter-wave coaxial cavities tuned to 897 MHz (Rx) and 942 MHz (Tx). Each Cavity Diplexer is swept on a 20 GHz VNA to guarantee insertion loss ≤1 dB and VSWR ≤1.3:1 on both paths, while rejection ≥65 dB across the opposite band ensures the Cavity Diplexer eliminates Rx/Tx self-quieting in GSM-R, PMR or cellular repeater chains.
Rugged Mechanical Build
The 891-903MHz/936-948MHz Cavity Diplexer is milled from one-piece aluminium, black-paint finished and sealed with Viton O-rings, giving IP54 protection and stable performance from -20 °C to +65 °C. SMA-F connectors are torque-sealed; the Cavity Diplexer can be wall-mounted with two M3 holes or supplied with custom brackets.
Factory Backbone – Why Keenlion
20-year Chengdu plant machines, plates, tunes and tests every Cavity Diplexer under one roof
7-day prototype lead, 21-day volume schedule
Insertion loss, VSWR and rejection verified on signed VNA plot
Competitive factory prices with no distributor margin
Free samples shipped in 48 hours
Professional after-sales support for life of the Cavity Diplexer
Global Market Fit
When engineers need a reliable Cavity Diplexer for 900 MHz FDD split, the 891-903MHz/936-948MHz Cavity Diplexer answers with metal, not software. Email sales@keenlion.com for data sheets, CAD files and factory pricing on the Cavity Diplexer—ship tomorrow, lock your duplex today.
