会社ブログについて Mini-Circuits LFCN-1500 DC-1500MHz 50Ω LTCC Low Pass Filter For Harmonic Rejection

Shenzhen Mingjiada Electronics Co., Ltd. supplies Mini-Circuits LFCN-1500 LTCC low-pass filters, which effectively suppress harmonics in RF links.

RF communication and test and measurement equipment are highly prone to generating higher-order harmonics and spurious signals during operation, which interfere with the main signal and reduce the overall sensitivity and spectral purity of the equipment. The Mini-Circuits LFCN-1500 is a DC–1500 MHz, 50 Ω impedance-matched LTCC (Low-Temperature Co-fired Ceramic) surface-mount low-pass filter, specifically designed for harmonic suppression in RF front-ends. Shenzhen Mingjiada Electronics Co., Ltd. stocks the LFCN-1500, providing a reliable procurement solution for genuine components to customers in the fields of communications, industrial measurement and control, and wireless equipment R&D and mass production.

I. LFCN-1500 Product Description

The Mini-Circuits LFCN-1500 is an LTCC surface-mount low-pass filter in an FV1206 package. Manufactured using an integrated ceramic multilayer sintering process, it is designed with a standard 50Ω RF impedance, making it compatible with the vast majority of RF systems. The device’s passband spans from DC to 1500 MHz, allowing baseband and main RF signals up to 1.5 GHz to pass through unimpeded, whilst providing high attenuation and suppression of harmonics and spurious signals in the 2100 MHz and above frequency bands. It filters out second- and third-order harmonics generated by power amplifiers and mixers, thereby purifying the RF output spectrum. The product is compact in size, making it suitable for high-density PCB layouts. It can be mounted directly on the front end of RF boards or at the output ports of power amplifiers, serving as a general-purpose passive component for harmonic suppression in RF links.

II. LFCN-1500 Specifications

- Model: LFCN-1500 (LFCN-1500+)

- Filter Type: LTCC (Low-Temperature Co-fired Ceramic) low-pass filter

- Characteristic Impedance: 50 Ω

- Passband Frequency: DC to 1500 MHz

- Maximum Insertion Loss in Passband: ≤1.0 dB

- 3 dB Cutoff Frequency: 1825 MHz

- Rejection in Stopband: ≥20 dB at 2100 MHz; typically 30 dB from 2150 to 6600 MHz; ≥20 dB at 6800 MHz

- VSWR in passband: DC–1500 MHz, typically 1.2:1

- Maximum RF input power: 10 W (at 25 °C ambient temperature)

- Operating temperature range: –55 °C to +100 °C

- Package: FV1206 surface-mount package

- Storage temperature: -55°C to +100°C

III. Features and Advantages of the LFCN-1500

1. Low insertion loss and minimal signal attenuation within the passband: Excellent loss control within the DC to 1500 MHz passband, with a maximum of just 1 dB, ensuring the integrity of the main RF signal and minimising link power loss.

2. Strong stopband suppression and outstanding harmonic filtering: Achieves high attenuation of higher-order harmonics and spurious signals above 2.1 GHz, effectively suppressing harmonic interference caused by power amplifier non-linearity and improving spectral purity.

3. Integrated LTCC ceramic structure with high stability: The low-temperature co-fired ceramic (LTCC) package ensures stable temperature characteristics, a robust mechanical structure, vibration resistance, minimal temperature drift, and consistent RF performance across high and low temperature environments.

4. Standard 50Ω impedance matching: No additional impedance matching circuitry is required, allowing seamless integration into standard 50Ω RF systems and simplifying RF circuit design.

5. Compact surface-mount packaging: The FV1206 surface-mount package saves PCB space, is compatible with automated SMT assembly, and is suitable for large-scale mass production.

6. High power handling capability: Supports up to 10W of RF input power at room temperature, meeting the requirements of medium-power RF transmission link applications.

IV. LFCN-1500 Application Scenarios

The core function of the LFCN-1500 is harmonic suppression, and it is widely used in RF systems operating at frequencies up to 1.5 GHz:

- Wireless communication equipment: VHF/UHF radios, ISM band wireless modules, and walkie-talkie RF transmission links; filters out harmonics from power amplifier outputs to meet EMC (electromagnetic compatibility) requirements;

- RF test and measurement instruments: signal generators, spectrum analyser front-ends, and RF test fixtures, to purify test signals and reduce spurious interference;

- Industrial RF control systems and short-range data transmission radios;

- Satellite ground receivers and IoT gateway RF front-ends;

- Radar and UAV RF signal links, to suppress higher-order harmonics at the transmitter end and prevent spurious signals from radiating externally and interfering with other frequency bands.

V. Advantages of Shenzhen Mingjiada Electronics’ Electronic Component Supply

Shenzhen Mingjiada Electronics has specialised in the distribution of electronic components for many years and holds ISO 9001 and ISO 14001 certifications. We can reliably supply genuine Mini-Circuits LFCN-1500 LTCC low-pass filters, supporting our customers’ RF project R&D and mass production:

1. Guaranteed genuine products with traceability: Leveraging global component procurement channels, we supply genuine LFCN-1500 components directly from the manufacturer. Quality inspections are carried out upon stock arrival, and material traceability documentation is provided to eliminate refurbished or counterfeit components, ensuring consistent electrical performance of RF devices.

2. Stock on hand, efficient delivery: We maintain constant stock at our Shenzhen and Hong Kong warehousing centres, supporting both small-batch sample orders and large-volume procurement; R&D samples are dispatched swiftly, standard orders are delivered within short lead times, and urgent orders are handled promptly to resolve customers’ delivery challenges.

3. Flexible procurement models: We support small-batch sample procurement for R&D and mass production supply. We offer VMI (Vendor-Managed Inventory) and JIT (Just-In-Time) on-demand delivery to meet customers’ procurement needs throughout the entire project lifecycle, from prototyping and trial production to large-scale mass production.

4. One-stop component supply service: In addition to Mini-Circuits RF filters, we simultaneously supply RF ICs, power management chips and sensors; we also offer an inventory buy-back service to help customers liquidate idle stock and optimise inventory costs.

Thanks to its excellent harmonic suppression performance and stable, reliable LTCC process, the LFCN-1500 has become the component of choice for low-pass filtering in RF links operating at 1.5 GHz and below. Shenzhen Mingjiada Electronics maintains a continuous supply of genuine, in-stock LFCN-1500 units, providing stable and reliable component supply chain support for customers in the wireless communications, test and measurement, and industrial RF sectors.