Series:	B1665
Part Status:	Obsolete
Frequency - Center:	1.21GHz
Bandwidth:	60MHz
Insertion Loss:	3dB
Ratings:	AEC-Q200
Applications:	Video
Mounting Type:	Surface Mount
Package / Case:	6-SMD, No Lead
Height (Max):	0.048" (1.22mm)
Size / Dimension:	0.118" L x 0.118" W (3.00mm x 3.00mm)

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SAW Filters

SAW filters, also known as surface acoustic wave filters, are devices designed to pass certain predetermined frequency signals while rejecting other frequencies. These filters are typically used in wireless communication systems, such as cellular phones and other mobile phone networks, as well as small-scale satellite networks, and wireless local area networks (WLANs). SAW filters can also be used in applications such as desk radios, GPS receivers, and high-speed serial data links.

B39122B1665U510 Application Field and Working Principle

The B39122B1665U510 is one of the most commonly used SAW filters due to its extensive filter requirements. This filter is a narrowband filter with high-rejection capabilities, and is used in several applications for wireless communication. It is designed to operate in the 1.2GHz to 1.6GHz range and uses an interdigital transducer to provide high-frequency signal transmission and characterization.The working principle of the B39122B1665U510 SAW filter is that the filter is a narrowband device that allows it to pass a narrow band of frequencies while blocking or attenuating out-of-band signals. This filter starts with an interdigital transducer (IDT) that produces surface acoustic wave (SAW) Delay Line filters which are then terminated by matched impedance resistors. The surface acoustic wave then propagates through the IDT and is split into two parts, a dominantmode part, and a resonance part. The dominant-mode part is steered to one side of the filter, while the resonance part is steered to the other side. The resulting filter allows a narrowband of frequencies to pass through while blocking or attenuating unwanted signals.

Conclusion

The B39122B1665U510 SAW filter is a high-performance device that can be used to filter out unwanted frequencies from the signal chain. This filter is designed to work in the range of 1.2GHz to 1.6GHz, making it ideal for various wireless communication applications such as cellular phones, WLANs, and satellite networks. With its high-rejection capabilities, the B39122B1665U510 provides a reliable and efficient way to filter out unwanted signals from the desired frequency range.

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