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8GHz -18GHz Band Pass Filter--High Quality Customised Band Pass Filter
Characteristics and Application
1. Precise Selection: The ability to precisely select the desired frequency range while providing sufficient rejection of signals at other frequencies, i.e., having a narrow passband and steep roll-off rate.
2. Low insertion loss: Within the passband, the signal is less attenuated, ensuring that the signal maintains a high level of energy as it passes through the filter.
3. High Stopband Attenuation: Within the stopband, the filter should provide sufficient attenuation to effectively suppress unwanted signals.
4. Low group delay: In the passband, the delay introduced by the filter is constant for all frequencies to avoid signal distortion.
5. Good Temperature Stability: The performance of the filter varies little at different temperatures, ensuring that it can work stably under various environmental conditions.
6. Low phase distortion: In the passband, the filter has less phase change to the signal, maintaining the integrity of the signal waveform.
XST can customise various indicator filters according to different application scenarios. Please feel free to contact us and we will do our best to meet your needs.
Technical indicators
| Product Name | Bandpass filter |
| Frequency Range | 8GHz -18GHz |
| Insertion loss | ≤1.5dB |
| VSWR | ≤1.8 |
| Out-of-band rejection | ≥45dB@ 7GHz |
| ≥45dB@19GHz | |
| port connector | SMA-K |
| Size | 46*20*7.5mm |
| Impedance | 50 OHMS |
Nots
Tolerance of unannotated dimensions: ±0.3mm;
Installation size tolerance: ±0.1mm
Filter operating temperature range：-40℃~+70℃
Filter Storage Temperature Range: -55℃~+85
Filter operating and storage relative humidity: no more than 93%.
Be careful to ground the case when using, otherwise it will affect the out-of-band rejection and flatness index.
If there is no port mark or other special instructions on the product, the product is a reciprocal device, and the input and output can be exchanged.
Customer Concerns
Type Selection
XST selects the most suitable filter based on application needs and design requirements, including parameters such as passband range, stopband attenuation, and filter type (passive or active).
LC filter: suitable for high frequency applications. Its resonant frequency is determined by the values of inductance and capacitance, and it can provide better frequency selectivity and steeper filter characteristic curve.
RC filter: Simple design and low cost, suitable for low frequency applications. However, compared to LC filters, RC filters are less frequency selective and have resistance and capacitance errors.
Active filters: can provide gain and better frequency selectivity. Suitable for applications requiring signal amplification and high frequency selectivity, flexible in design and suitable for a variety of applications.
Butterworth Filter: Provides the smoothest ripple-free passband, but with a slower drop in the reject band, suitable for applications requiring high passband flatness.
Multi-passband filters: Multiple passbands for applications such as Bluetooth/Wi-Fi links where multiple frequency signals need to be processed simultaneously.
Balancing Performance, Cost
XST balances filter performance and cost in the following ways, allowing customers to obtain excellent quality and stable performance filters at a reasonable price.
Circuit Design: Use efficient circuit structures to reduce the number of circuit components required, thereby reducing cost and power consumption.
Component Selection: Select high-quality electronic components and stable reference sources, and consider the temperature coefficients and tolerances of the components to ensure consistent and reliable filter performance.
Simulation tools: Use simulation tools in the design phase to refine the design, reduce the number of modifications in the real test process, and reduce R&D costs .
Integrated design: The use of integrated design miniaturises the filter system and reduces costs.
Temperature Compensation: Temperature compensation technology reduces the impact of ambient temperature changes on filter performance, ensures performance stability, and extends service life.
Customisation
XST understands that every customer has unique application scenarios and metrics requirements, so we offer a wide range of customisation options for filters to provide a personalised solution that is perfectly suited to their specific application.
In-depth understanding of customer needs: We have an in-depth dialogue with our customers to understand technical specifications, application scenarios, and performance expectations.
Wide range of customisation options: Customisation options are available including frequency range, stopband attenuation, power capacity, size constraints and environmental tolerances.
Dedicated technical team: XST's dedicated technical team, capable of handling complex customisation requirements, provides professional design and manufacturing services.
Close Customer Collaboration: Close communication with customers ensures that their needs are accurately understood and met throughout the design and manufacturing process.
Individual solutions: Provide personalised solutions for each unique requirement, including custom design, rapid prototyping and full testing.
Rigorous Quality Control: XST's strict quality control system ensures that each customised product meets the highest performance standards and reliability requirements.
Flexible Manufacturing Capabilities: XST's complete production line allows for quick line adjustments to accommodate different customer customisation requirements.
Comprehensive technical support: Provide full technical support from concept to finished product to help customers solve technical problems and optimise product performance.
Ongoing after-sales service: Providing ongoing technical support and customer service even after the product has been delivered ensures that customers are able to take full advantage of their customised products.
Long-term partnership: By providing excellent customisation services, we build long-term relationships with our customers and become a trusted partner.
XST provides OEM and ODM services for microwave devices (filters, couplers, power dividers, combiners, duplexers, isolators, attenuators, loads, etc.), if you have any needs, please feel free to contact us and we will be happy to serve you.