CatalogueThe LTCC filter is a 3D multi-layer integrated RF filter and a core component in modern communication and IoT applications. It offers advantages such as compact size, wide frequency coverage, and high reliability.
▸ Ultra-compact: Utilizes multi-layer ceramic co-firing, making it much smaller than discrete LC and microstrip filters, and suitable for high-density RF front-ends.
▸ Wide frequency range: Supports frequencies from 80 MHz to 40 GHz, covering 5G/4G, Wi-Fi, millimeter wave, and other mainstream applications.
▸ Stable performance: Features low temperature drift, and resistance to vibration and moisture, meeting stringent automotive and industrial-grade environmental requirements.
▸ Favorable process: Compatible with silver/copper conductors, supports built-in shielding, and is suitable for SMD mass production.
▸ Flexible bandwidth: Achieves a relative bandwidth of 2% to 60%, adaptable for both narrowband and broadband designs.
This high-performance filter is widely used in various fields, including:
▸ Consumer electronics: RF front-ends for miniaturized terminals such as smartphones, smart watches, and TWS earphones.
▸ Internet of Vehicles & Autonomous Driving: Vehicle communication modules and radar sensors requiring vibration and temperature resistant filtering.
▸ IoT & Industrial Interconnection: Smart meters and industrial gateways, ensuring signal purity in harsh complex electromagnetic environments.
▸ Satellite & Navigation: GPS terminals and LEO satellite communication modules, realizing miniaturized filtering in high frequency bands.
Ceramic Filter and Dielectric Filter are two common ceramic-based RF filter solutions, with significant differences in principle and performance as follows:
| Comparison Item | LTCC Filter | Dielectric Filter |
| Working Principle | Electromagnetic Resonance | Electromagnetic Resonance |
| Applicable Frequency Band | Low & Medium Frequency (up to millimeter wave) | Medium & High Frequency / 5G |
| Bandwidth | Flexible (Narrow/Broad, 2%~60%) | Flexible (Narrow/Broad) |
| Q Value | High | Very High |
| Power Capacity | Small | Large |
| Temperature Stability | General | Excellent |
| Out-of-band Rejection | General | Ultra-strong |
Compared with dielectric filters, LTCC filters offer advantages in size and integration, making them ideal for terminal and module-level applications. Dielectric filters, on the other hand, are more suitable for high-power and high-Q scenarios such as base stations.
As a professional RF passive component supplier, APEX specializes in the R&D and manufacturing of high-performance filters, offering both standard products and customized solutions. With stringent quality control and advanced production processes, our products deliver stable and outstanding performance in scenarios such as consumer electronics, the Internet of Vehicles, satellite navigation and 5G communications. APEX welcomes your inquiries.
Post time: Mar-25-2026
