Diplexers and multiplexers combine or separate signal paths by frequency. Define each channel’s passband and the required isolation between ports, then compare insertion loss, impedance and power handling. Use the model datasheet to confirm connector arrangements and mechanical dimensions.
| Model Number | Description | Bandwidth | Center Frequency | Dimensions | Insertion Loss | Attenuation | Return Loss | |
| HD34203 | Multiplexer | 4 COM | See Spec | 270 x 240 x 100 | 2 | 18 | Download | |
| HD34213 | 5 COM | 175 x 160 x 39.8 | 0.8 | 14 | Download | |||
| HD34204 | Diplexer | 26/37 | 1537/1643.5 | 174 x 150 x 2 | 1 | 90 | 18 | Download |
| HD34205 | 70/70 | 2535/2655 | 100 x 96 x 27 | 1.5 | 70 | 12 | Download | |
| HD34206 | 60/60 | 1950 Hz/2140 MHz | 94 x 94 x 30 | 0.7 | 80 | 18 | Download | |
| HD34207 | 25/25 | 836.5 MHz/881.5 MHz | 130 x 159 x 76 | 1.6 | Download | |||
| HD34208 | Duplexer | 40 | 1940/2140 | 144 x 90 x 34 | 1.3 | 40 | 16 | Download |
| HD34211 | Diplexer | 60/60 | 1950 Hz/2140 MHz | 60 x 108 x 28 | 0.5 | 60 | 15 | Download |
| HD34212 | 500-2200/2500-6001 | 80 x 100 x 21 | 0.8 | Download | ||||
| HD34355 | LC Diplexer | 74/175 | 191-137/312.5 | 110 x 80 x 29 | Download | |||
| HD34356 | 74/287 | 137/368.5 | 150 x 80 x 29 | 0.5 | Download | |||
| HD34209 | Duplexer | 3 | CH1: 655.5, CH2: 671 | 276 x 185 x 58 | 1.3 | 70 | Download |
Electrical, environmental and mechanical requirements
Provide the required frequency response, insertion loss or attenuation, impedance and RF power level. RFComp can review these requirements against available model specifications.
Specify operating and storage temperatures, vibration, sealing and other environmental requirements. Confirm each rating in the selected model’s datasheet; do not assume every model supports extreme conditions.
Provide connector type, package dimensions, mounting constraints and any space or weight limits. Confirm the mechanical drawing and interface requirements before ordering.
A diplexer combines or separates two frequency bands through a common port. A frequency multiplexer supports multiple bands; the number of channels and their passbands depend on the design.
Compare every channel’s passband, insertion loss, return loss, power rating and required isolation. Confirm the common-port and channel-port connections from the selected model’s documentation.
Set the isolation requirement from the interfering signal level and the maximum level acceptable at the other channel. Specify the frequencies and operating conditions so models can be compared meaningfully.
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