I. Product Features and Description

    The LTCC coupler (also known as a directional coupler) is a device used to connect two or more devices or systems. It can couple a portion of the signal from the main transmission line at a certain ratio and has clear directionality, enabling various devices or systems to work together in coordination. Its primary function is to transmit signals or energy, allowing devices or systems to cooperate, thereby transferring signals from one device to another to achieve data transmission or communication. In microwave systems, the main role of the coupler is to divide a microwave power signal into several paths proportionally, thus achieving power distribution. The LTCC directional coupler has the functions of quantitatively absorbing energy from the transmission line, controlling power levels, and expanding the power range. It also offers advantages such as precisely controlled coupling and high isolation. 

    The LTCC directional coupler has strong selectivity for signal direction, effectively distinguishing between forward and reverse signals. It also features a wide frequency range, low standing wave ratio, high attenuation accuracy, high isolation, excellent directionality, compact size, long service life, high integration, light weight, and good compatibility. It offers miniaturization advantages such as thin, short, and small dimensions, along with highly flexible integrated design characteristics.                              

II. Product Models and Parameters

III. Precautions and Applications

    LTCC directional couplers are widely used in the field of electronic communications, effectively reducing the area and volume of microwave passive components, making them the preferred method for miniaturization and integration of microwave circuits and systems. During use, ensure that the grounding terminal is properly grounded, as poor grounding may affect out-of-band suppression and flatness indicators. When soldering, it is best to use the recommended temperature—avoid excessively high temperatures or prolonged soldering times. If reflow soldering is used, it is recommended to follow the recommended temperature settings; wave soldering is not advisable. Products should be stored in an environment with a temperature of -10°C to 40°C, relative humidity not exceeding 80%, and free from acidic, alkaline, or other harmful gases. For cleaning, it is recommended to use alcohol for wiping. 

    Xianfeng Microwave offers a variety of packaged LTCC directional couplers (power dividers) for users to choose from, with flexible design and support for customization (input/output forms and external dimensions can be designed according to user requirements). Custom LTCC low-pass filters, high-pass filters, band-pass filters, and band-stop filters are also available. Since the various parameters of microwave components are interrelated and affect each other, users must clearly specify their requirements before customization. Once the product is manufactured, changes cannot be made.