SMV1405-079LF Discrete Semiconductor Products

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Variable capacitance devices, also known as varicaps, varactors, or capacitance diodes, are semiconductor devices whose capacitance alters depending on the voltage applied to them. The SMV1405-079LF is an example of these devices. This digital-RF varactor diode provides a high-Q and low-loss performance while also operating at signal frequencies up to 3 GHz. It is designed to offer a wide tuning range and is a suitable choice for LTE/WCDMA/GSM/CDMA/UMTS applications.

Application Fields

The SMV1405-079LF has a wide range of potential uses. It is commonly used in RF applications such as tuning filters, frequency synthesizers, phase shifters and voltage-controlled oscillators. It is suitable for a broad range of communication networks, including LTE, TETRA, 3G UMTS, 2G GSM, and ISM. The device is also used in CATV infrastructure systems, video broadcasting, satellite communications, military radio systems and cellular radio links.

Working Principle

The SMV1405-079LF is designed to provide a large tuning range while minimizing insertion loss and parasitic capacity. The device consists of a silicon material layer between two metal plates. When a voltage is applied, an electric field will be formed between the two plates, which is responsible for creating the capacitance. This electric field can be modulated, allowing for a wider capacitance tuning range.

The device operates by storing and releasing charge in response to the applied voltage. When the voltage is increased, the field strength also increases, resulting in a higher capacitance value. On the other hand, a decrease in the voltage will result in a decrease in the field strength, resulting in a lower capacitance value. This principle allows for a variation in the capacitance, making the SMV1405-079LF a suitable choice for RF tuning applications.

In addition to its use in RF applications, the SMV1405-079LF is suitable for a variety of other applications. Its low forward voltage drop and fast switching speeds make it suitable for switching and control circuits.

Conclusion

The SMV1405-079LF is an example of a variable capacitance device, which is suitable for a variety of radio frequency applications. The device is designed to provide a wide tuning range while minimizing insertion loss and parasitic capacity. It is commonly used in applications such as LTE/WCDMA/GSM/CDMA/UMTS, CATV infrastructure systems, video broadcasting, satellite communications, military radio systems and cellular radio links. The device operates by storing and releasing charge in response to an applied voltage, which allows for a variation in the capacitance value.

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