SF1189B-1

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Frequency - Center:	280MHz
Bandwidth:	19.8MHz
Insertion Loss:	8.3dB
Ratings:	--
Applications:	WLAN
Mounting Type:	Surface Mount
Package / Case:	8-SMD, No Lead
Height (Max):	0.067" (1.70mm)
Size / Dimension:	0.197" L x 0.197" W (5.00mm x 5.00mm)

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<br><br><p>SAW filters, also known as Surface Acoustic Wave (SAW) filters, are filter devices that use acoustic waves on the surface of a substrate material as a means for filtering out unwanted frequency signals. The SF1189B-1 is a versatile SAW filter package designed for applications in the mobile telecommunications industry, with a range of passbands from 3-3000 MHZ. The most commonly used applications for the SF1189B-1 are in base stations for the Global System for Mobile Communications (GSM). Other applications may include On-Off Keying modulation of short or narrow-band signals, such as those used in Audio Video Broadcasting (AVB).</p><p>The SF1189B-1 SAW filter is designed with an integrated low-pass filter, high-pass filter, and differential filter in order to reduce the total interference of the signals. The purpose of the integrated filter is to reduce the unwanted signals in a frequency band that passes through the SAW filter package. This is achieved by passing all frequencies in the passband (desired) of signals while attenuating (reducing) any frequencies outside the passband (undesired). The SF1189B-1 also includes a temperature-compensated notch filter that eliminates interference from other similar frequency signals. This allows for more accurate signal reception, and prevents unwanted signals from degrading the quality of the signal.</p><p>The working principle of the SF1189B-1 SAW filter package is based on acoustic wave propagation. In a typical SAW filter package, an electrical signal is applied to two interdigital electrodes that are embedded in a substrate material. The interdigital electrodes create an acoustic wave along the surface of the substrate material. This wave is then received by an electrode at the opposite end of the substrate and its signal is monitored for any changes that may affecting its properties, such as frequency, amplitude or phase. This allows the SAW filter to be tuned to different frequencies in order to achieve high selectivity.</p><p>The SF1189B-1 is an advanced SAW filter package that enables high-quality signal reception, with minimal interference. The package has high temperature stability and a wide bandwidth range. It is also possible for the filter to be used in high-temperature environments, and is suitable for a wide range of applications. The SF1189B-1 SAW filters allow users to achieve a high-quality signal reception, with minimal interference from other frequencies.</p>

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