Duplexer vs Quadplexer vs Hexaplexer vs Pentaplexer: Key Differences

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hexaplexer

This article compares the Duplexer, Quadplexer, Hexaplexer, and Pentaplexer, highlighting the differences in their functions and construction. Let’s delve into how these devices work.

Duplexer

Duplexer

The Duplexer has two ports (Tx, Rx) and one antenna port. As a device, it functions as a 2-port to 1-port multiplexer/de-multiplexer. It’s commonly used to multiplex and de-multiplex transmit and receive bands in systems like GSM, CDMA, and LTE. SAW filters are often employed as SAW duplexer devices.

Quadplexer

Quadplexer filter

The Quadplexer features four ports, in addition to one antenna port. It serves as a 4-port to 1-port multiplexer/de-multiplexer. The image shows a quadplexer with two receive ports (P3 and P5), two transmit ports (P2 and P4), and one antenna port (P1). Due to its compact size, it helps reduce the overall cost of end-device development and is ideal for applications with space constraints.

Hexaplexer

Hexaplexer filter

The Hexaplexer has six ports besides the antenna port. It functions as a 6-port to 1-port multiplexer/de-multiplexer. Three of the six ports are typically used as receive ports, while the remaining three are used as transmit ports.

Pentaplexer

Pentaplexer filter

The Pentaplexer contains five ports, plus an antenna port. It operates as a 5-port to 1-port multiplexer/de-multiplexer. Two of the five ports are usually used as receive ports, and the other three as transmit ports.

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