The differences between LTCC filters and SAW filters mainly lie in their operating principles, performance characteristics, and application scenarios.

Operating principle: LTCC (Low Temperature Co-Fired Ceramic) filters are realized by integrating passive components such as inductors, capacitors, and transmission lines into multilayer ceramic substrates using LTCC technology. Filtering is achieved through electromagnetic resonance. SAW (Surface Acoustic Wave) filters, on the other hand, rely on surface acoustic waves propagating and interfering on the surface of a piezoelectric substrate to achieve frequency selection, and they belong to acoustic filters.

Performance characteristics: LTCC filters offer high power handling capability, good linearity, and high reliability, making them suitable for low- to mid-frequency and wideband applications. However, they are relatively larger in size and have moderate Q factors. SAW filters feature compact size, high frequency accuracy, and excellent selectivity, making them ideal for mid- to high-frequency narrowband applications, but their power handling capability and temperature stability are relatively limited.

Applications: LTCC filters are commonly used for impedance matching, harmonic suppression, and RF module integration, while SAW filters are widely used in transmit and receive paths of mobile phones and other wireless communication devices.

Yun Micro, as the professional manufacturer of rf passive components, can offer the cavity filters up 40GHz,which include band pass filter, low pass filter, high pass filter, band stop filter.

Welcome to contact us: liyong@blmicrowave.com