Band Pass Filter

A cavity duplexer is a special type of duplexer used in wireless communication systems to separate transmitted and received signals in the frequency domain. The cavity duplexer consists of a pair of resonant cavities, each specifically responsible for communication in one direction.

The working principle of a cavity duplexer is based on frequency selectivity, which uses a specific resonant cavity to selectively transmit signals within the frequency range. Specifically, when a signal is sent into a cavity duplexer, it is transmitted to a specific resonant cavity and amplified and transmitted at the resonant frequency of that cavity. At the same time, the received signal remains in another resonant cavity and will not be transmitted or interfered with.

Custom design available upon request.

Send email to us sales@rftyt.com

Product Detail

Product Tags

Overview

The two main components of a cavity duplexer are the transmitting cavity and the receiving cavity.

The high isolation, low insertion loss, reliability, and stability of cavity diplexers give them great advantages in wireless communication systems.

Cavity diplexers play a crucial role in wireless communication systems, particularly suitable for scenarios where both sending and receiving signals are required to coexist in the same frequency band. For example, communication between base stations and mobile devices, communication between wireless stations and monitoring devices, etc. By using cavity diplexers, the system can achieve efficient and reliable bidirectional communication.

Data Sheet

Duplexer
Model No.	Frequency (MHz)		IL.≤(dB)	Rejection	VSWR≤	Power (CW)	Connector	Temp.(°C)	Dimension LxWxH(mm)
DUP-136M143-02N	Rx	136-138	1.5	≥70dB@143-145MHz	1.3	75	N	-30~+75	310148156
	Tx	143-145	1.5	≥70dB@136-138MHz
DUP-151M161-01N	Rx	155.1-156.1	1.5	≥75dB@161-162MHz	1.3	80	N	-20～+60	310148156
	Tx	161-162	1.5	≥75dB@155.1-156.1MHz
DUP-158M162-02N	Rx	158-160	0.8	≥70dB@162.5-164.5MHz	1.25	200	N	-30～+60	430310150
	Tx	162.5-164.5	0.8	≥70dB@158-160MHz
DUP-240M340-30T40S	Rx	240-270	1.0	≥80dB@40-220MHz ≥80dB@290-1800MHz ≥50dB@1800-2200MHz	1.3	10	SMA	-40～+75	26019065
	Tx	340-380	1.0	≥80dB@40-320MHz ≥80dB@410-1800MHz ≥50dB@1800-2200MHz
DUP-351M361-05SNS	Rx	351-356	1.6	≥30dB@358.5MHz ≥85dB@361-366MHz	1.3	80	Rx:SMA Tx:SMA ANT:N Lengthening	-20～+60	177.5134.585
	Tx	361-366	1.6	≥30dB@358.5MHz ≥85dB@351-356MHz
DUP-385M395-05S	Rx	385-390	1.7	≥40dB@392.5MHz ≥85dB@395-400MHz	1.3	50	SMA	-20～+60	177.5134.585
	Tx	395-400	1.7	≥40dB@392.5MHz ≥85dB@385-390MHz
DUP-403.5M413.5-05S	Rx	403.5-408.5	1.8	≥75dB@ 413.5-418.5 MHz ≥30dB@ 398.5MHz(20℃)	1.25	75	SMA	-25～+55	260×72×68
	Tx	413.5-418.5	1.8	≥75dB@ 403.5-408.5 MHz ≥30dB@ 423.5MHz(20℃)
DUP-412M422-05S	Rx	412-417	1.7	≥40dB@419.5MHz ≥85dB@422-427MHz	1.3	50	SMA	-20～+60	177.5134.585
	Tx	422-427	1.7	≥40dB@419.5MHz ≥85dB@412-417MHz
DUP-450M758-50A107S	Rx	450-500	0.5	≥60dB@758-865MHz	1.3	50	SMA	-20～+60	1608353
	Tx	758-865	0.5	≥60dB@450-500MHz
DUP-457M467-02S	Rx	457-459	2.0	≥95dB@467-469MHz	1.3	50	SMA	-30～+60	28010068
	Tx	467-469	2.0	≥95dB@457-459MHz
DUP-703M758-45S	Rx	703-748	1.5	≥30dB @ 753MHz ≥85dB @ 758-803MHz	1.25	40	SMA	-20～+65	2878748
	Tx	758-803	1.5	≥30dB @ 753MHz ≥85dB @ 703-748MHz
DUP-824M869-25S	Rx	824-849	1.5	≥80dB @ 869-894MHz	1.3	50	SMA	-20～+60	1926045
	Tx	869-894	1.5	≥80dB @ 824-849MHz
DUP-1150M1530-150A100S	Rx	1150-1300	0.4	≥80dB@1530-1630MHz	1.3	100	N	-20～+60	13510043
	Tx	1530-1630	0.4	≥80dB@1150-1300MHz
DUP-1215M1550-46A60NA	Rx	1215-1261	0.3	≥60dB@1550-1610MHz	1.3	300	N	-20～+60	1809350
	Tx	1550-1610	0.3	≥60dB@1215-1261MHz
DUP-1215M1550-46A60NB	Rx	1215-1261	0.3	≥60dB@1550-1610MHz	1.3	500	N	-20～+60	22011356
	Tx	1550-1610	0.3	≥60dB@1215-1261MHz
DUP-1518M1920-157A105S	Rx	1518-1676	1.2	≥80dB@Sideband ±100MHz	1.3	50	SMA	-25～+60	16010543
	Tx	1920-2025	1.2	≥80dB@Sideband ±100MHz
DUP-1710M1805-75S	Rx	1710-1785	1.5	≥5@1700MHz ≥5@ 1790MHz ≥55dB@1795MHz（20℃） ≥85dB@1805-1880MHz	1.3	50	SMA	-20～+65	1809843
	Tx	1805-1880	1.5	≥5@1800MHz ≥10@ 1890MHz ≥55dB@1795MHz（20℃） ≥85dB@1710-1785MHz ≥80@1920-2700MHz	1.3
DUP-1710M1805-75SNS	Rx	1710-1785	1.2	≥80dB@1805-1880MHz	1.3	100	Rx:SMA Tx:SMA ANT:N Lengthening	-20～+65	16112043
	Tx	1805-1880	1.2	≥80dB@1710-1785MHz	1.3
DUP-2490M2610-30SNS	Rx	2490-2520	1.4	≥90dB@DC-2450MHz ≥90dB@2620-6000MHz	1.3	5	Rx:SMA Tx:SMA ANT:N	-20～+60	1928840
	Tx	2610-2640	1.4	≥90dB@DC-2570MHz ≥90dB@2740-6000MHz	1.3
DUP-2500M2620-70S	Rx	2500-2700	1.3	≥45@ 2595MHz ≥90@2620-2690MHz	1.3	50	SMA	-30～+60	1928848
	Tx	2620-2690	1.3	≥45@ 2595MHz ≥90@2500-2570MHz	1.3
DUP-2515M3400-160A200S	Rx	2515-2675	0.6	≥80dB@3400-3600MHz	1.3	20	SMA	-25～+70	1004530
	Tx	3400-3600	0.6	≥80dB@2515-2675MHz	1.3