B39941B8516P810S5

RF diplexers are devices used to combine or separate multiple signals with different frequency bands into one transmission line. The model B39941B8516P810S5 is a high-performance diplexer designed for the wireless telecommunications market.

Application Field

The B39941B8516P810S5 diplexer operates in the 698–960 MHz and 1710–2170 MHz frequency bands commonly used in LTE and UMTS/HSPA applications. This device provides a low insertion loss, high out-of-band rejection, and excellent inter-modulation performance required in today’s cellular networks. It is designed to suppress out-of-band blockers, interferences, and harmonics from the cellular base station to enhance system performance. This diplexer also has good mechanical stability, enabling it to meet stringent environmental requirements such as temperature cycling and vibration.

Working Principle

The B39941B8516P810S5 is a low-pass/high-pass diplexer based on conventional filter technology. It uses two separately tuned filter circuits tuned to corresponding two frequency bands. The low-pass filter passes the lower frequency band and rejects the higher frequency band, while the high-pass filter passes the higher frequency band and rejects the lower frequency band. The filters are cascaded together and coupled with one another to achieve the desired performance. As the name suggests, the signals are divided at the input and recombined at the output.

The diplexer is constructed using high-Q microstrip networks to achieve the desired performance. The microstrip networks are composed of two series capacitors, two shunt inductors, and a combination of a series inductor and two shunt capacitors. The filter circuits are then interconnected using coupling components such as capacitors and transformers. The filters are then mounted onto a rigid substrate such as alumina. Finally, the entire device is enclosed in a robust housing.

The diplexer operates based on the principle of frequency selectivity. It passes signals in the desired bands while rejecting signals in other frequency bands. The diplexer also helps to isolate the individual devices to protect them from signal interference. In addition, the diplexer can help reduce costs when using multiple antennas for separate frequency bands.

B39941B4124U410	Qualcomm (RF...	0.82 $	1000	FILTER SAW 942.5MHZ 6SMD
B39901B5056U410	Qualcomm (RF...	1.74 $	1000	FILTER SAW 895.5MHZ 6SMD
B39951B4684Z610	Qualcomm (RF...	1.78 $	1000	FILTER SAW 947.5MHZ 6SMD
B39941B4401P810	Qualcomm (RF...	2.34 $	1000	FILTER SAW 9SMD
B39941B5057U410	Qualcomm (RF...	2.86 $	1000	FILTER SAW 940.5MHZ 6SMD
B39901B4179U510	Qualcomm (RF...	0.0 $	1000	FILTER SAW 897.5MHZ 6SMD
B39901B7715C610	Qualcomm (RF...	0.0 $	1000	FILTER SAW 897.5MHZ 6SMD
B39941B4065U810	Qualcomm (RF...	0.0 $	1000	FILTER SAW 940MHZ 8SMD
B39941B4121U510	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 6SMD
B39941B4131U410	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 6SMD
B39941B4165U410	Qualcomm (RF...	0.0 $	1000	FILTER SAW 938MHZ 6SMD
B39941B7705B610	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 5SMD
B39941B7706B610	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 5SMD
B39941B7707C510	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 4SMD
B39941B7710C610	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 6SMD
B39941B7721C910	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 6SMD
B39941B7820C710	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 5SMD
B39941B7837K410	Qualcomm (RF...	0.0 $	1000	FILTER SAW 942.5MHZ 5SMD
B39921B3705Z810	Qualcomm (RF...	0.0 $	1000	FILTER SAW 914.7MHZ 8SMD
B39901B3772Z810	Qualcomm (RF...	0.0 $	1000	FILTER SAW 902.875MHZ 8SM...
B39911B1721Z810	Qualcomm (RF...	0.0 $	1000	FILTER SAW SATELLITE SMD
B39921B3588U410	Qualcomm (RF...	--	108000	FILTER SAW 915MHZ 6SMD
B39921B4301F210	Qualcomm (RF...	--	30000	FILTER SAW 915MHZ 5SMD
B39921B3728U410	Qualcomm (RF...	--	9000	FILTER SAW 915MHZ 6SMD
B39921B3718U410	Qualcomm (RF...	0.57 $	18000	FILTER SAW 916MHZ 6SMD
B39921B3726U410	Qualcomm (RF...	--	1000	FILTER SAW 915MHZ 6SMD
B39921B3949H110	Qualcomm (RF...	0.57 $	1000	FILTER SAW 3.0X3.0
B39941B3514H910	Qualcomm (RF...	0.0 $	1000	FILTER SAW 881.5/942.5MHZ...
B39941B3904U410	Qualcomm (RF...	0.0 $	1000	FILTER SAW 944MHZ
B39901B3835U410	Qualcomm (RF...	0.0 $	1000	FILTER SAW 899MHZ 6SMD
B39941B4380P810	Qualcomm (RF...	0.0 $	1000	FILTER SAW SMD
B39941B4380P810S5	Qualcomm (RF...	0.0 $	1000	FILTER SAW SMD
B39941B8809P810	Qualcomm (RF...	--	1000	FILTER SAW
B39941B9853P810	Qualcomm (RF...	--	1000	FILTER SAW
B39901B9435M410	Qualcomm (RF...	0.0 $	1000	FILTER SAW
B39941B9450K610	Qualcomm (RF...	0.0 $	1000	FILTER SAW
B39941B9472P810	Qualcomm (RF...	0.0 $	1000	FILTER SAW
B39941B9510L310	Qualcomm (RF...	0.0 $	1000	FILTER SAW
B39941B9517P810	Qualcomm (RF...	0.0 $	1000	FILTER SAW
B39941B9905P810	Qualcomm (RF...	0.0 $	1000	FILTER SAW