SF14-1575M5UBA1 Filters

Series:	SF, Kyocera
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Frequency - Center:	1.57542GHz
Bandwidth:	2MHz
Insertion Loss:	1.1dB
Ratings:	--
Applications:	GPS
Mounting Type:	Surface Mount
Package / Case:	5-SMD, No Lead
Height (Max):	0.028" (0.70mm)
Size / Dimension:	0.055" L x 0.043" W (1.40mm x 1.10mm)

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Introduction

Surface acoustic wave (SAW) filters are passive components employing the piezoelectric effect of a substrate such as quartz to convert an electrical signal into an acoustic wave. The acoustic wave propagates along a piezoelectric substrate and interacts with an interdigital transducer (IDT) placed on its surface. The IDT acts as a transmitters-receiver of the SAW filter. The SAW filters have very sharp frequency selectivity and good power handling capability. The SF14-1575M5UBA1 SAW filter is a low-cost filter used in many applications. It has a wide operating frequency range of 0.8GHz to 1.5GHz. This frequency range allows for wide range of applications in various industries such as wireless communication, broadcasting, satellite communication, RFID, automotive and many more. The SF14-1575M5UBA1 SAW filter also has a compact design which is ideal for applications with limited space.

Applications of SF14-1575M5UBA1 SAW Filter

One of the primary application of the SF14-1575M5UBA1 SAW filter is in wireless communication. The filter is used to receive signals at the designated frequencies. The filter allows only the signals at the operating frequency range to pass through while at the same time blocking out all other frequencies by acting as a high-pass filter. This filter is especially used in base station transceivers where it is used to filter out the input signals coming from the antenna and the output signals going towards the antenna.The filter is also used in broadcasting and satellite communication. The filter filters out noise and interference in order to ensure only clean and pure signals are received. It also ensures that only signals which are within the prescribed frequency range are received. This helps to reduce the background noise and make sure that the signal is free of interference and distortion.The SF14-1575M5UBA1 SAW filter is also used in automotive industry in the infotainment systems. The filter helps to filter out interference from the outside environment and ensures that only clean and pure signals are received by the system.The filter is also used in RFID applications. The filter helps to ensure that only the tag signals are received by the RFID reader while at the same time blocking out all other signals. This ensures that the RFID reader can read the tags accurately and quickly.

Working Principle of SF14-1575M5UBA1 SAW Filter

The working principle of the SF14-1575M5UBA1 SAW filter is based on the piezoelectric effect of quartz. The quartz is connected to the two IDTs which act as transmitters and receivers of the signals. When the signal is applied to the quartz, an acoustic wave is generated which propagates along the quartz. This wave interacts with the IDT to cause resonance. The resonance causes the signal to be reflected back or passed through the filter.The resonance is caused by the factor called “Coupling Factor” or “Q-factor”. This factor signifies the ratio of energy absorbed and energy radiated by the filter. The higher the coupling factor, the greater is the resonance. The SF14-1575M5UBA1 SAW filter has an insertion loss of 13dB and a rejection of 40dB, allowing for greater control over the frequency response.

Conclusion

The SF14-1575M5UBA1 SAW filter is a low-cost filter which is used in a wide variety of applications such as wireless communication, broadcasting, satellite communication, RFID, automotive and many more. The filter works based on the piezoelectric effect of quartz and interacts with an IDT to cause resonance. This resonance allows for high frequency selectivity and power handling capability. The filter also has a relatively high coupling factor which allows for greater control over the frequency response.

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