What is a Quadplexer Filter SAW BAW LTE 5G : Top Manufacturers

A quadplexer filter is an RF front-end component that combines and separates four frequency bands within LTE and 5G communication devices. Using SAW or BAW filter technologies, quadplexers improve signal isolation, reduce interference, minimize component count, and enhance overall wireless communication performance.

About Quadplexer Filter

As shown above, a quadplexer has 4 ports in addition to one antenna port. It functions as a 4-port to 1-port multiplexer/de-multiplexer. The figure depicts a quadplexer device with 2 receive ports (P3 and P5), 2 transmit ports (P2 and P4), and one antenna port (P1).

Due to its ultra-small size requirements, it can be used to reduce the cost of overall end-device development. Moreover, it is ideal for space-constrained applications.

Technical Specifications of Quadplexer Filters

The following technical specifications of Quadplexer filters should be considered while selecting or buying:

• Bands or frequency range
• Insertion Loss (in transmit direction)
• Compact Form Factor
• Power handling capacity at input ports
• VSWR at Tx port, ANT port
• Attenuation at different frequency range
• Tx to Rx Isolation

Example: Band 25/4 and Band 1/3 quadplexers

Quadplexers allow two bands (i.e., Band 25/4 or Band 1/3) to be connected to an antenna at the same time. This is very useful for carrier aggregation, where a mobile handset may want to receive on two bands simultaneously or transmit on two bands concurrently.

Quadplexer Filter Manufacturers

The following table lists Quadplexer filter manufacturers with part numbers and technical features:

Quadplexer filter Manufacturers	Description
Qorvo	• Model : QM25032 • It functions as Band 1 + Band 3 Multiplexer. • It is used for LTE and 5G NR handsets and datacards products for carrier aggregation. • It offers minimal insertion loss (in Tx) and high cross isolation. • Website : http://www.qorvo.com/
JQL Technologies Corp.	• Model : JRMP8J677F8J772FA • Model : JRMP6J2050R6J1792FB • The company offers various quadplexer ceramic filters for different applications. • Website : http://www.jqlelectronics.com/ • Contact Email : sales@jqlelectronics.com
Communication Components Inc. NJ	• Model : QPO series (Example : QPO-18223456-xxx) • Quadplexer combines 4 bands (i.e. 1710-1880, 1920-2180, 2300/2400, 2500-2700) onto a common port. • Website: http://www.cciproducts.com/ • Email : sales@cciproducts.com
Murata Manufacturing Co., Ltd.	• Model : Band4 - Band25 SAW Quadplexer • Band4 Tx : 1710 - 1755 MHz, Band4 Rx : 2110-2155 MHz, Band25 Tx : 1850 -1915 MHz, Band25 Rx 1930 -1955 MHz • Website : https://www.murata.com/en-sg
Resonant Inc. CA USA	• Developes quadplexer filter as per TC-SAW design. • Website : https://www.resonant.com/

Summary

A quadplexer filter manages four RF frequency bands in LTE and 5G devices using SAW or BAW technologies. Leading manufacturers provide quadplexer solutions that improve signal quality, integration, and spectrum efficiency.