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Customised 1000MHz Spot Filters / Spot Bandpass Filters / Cavity Spot Filters
Characteristics and Application
1. high selectivity: point-frequency filters are able to provide high gain at the frequency for which they are designed, while suppressing signals at other frequencies.
2. narrow bandwidth: compared with wider bandwidth filters, point frequency filters have a narrower bandwidth, which helps to screen signals more accurately.
3. high Q value: Q value is an important parameter to measure the selectivity of the filter, point frequency filters usually have a high Q value, meaning that they have a sharp gain peak near the resonant frequency.
XST can customise all kinds of indicator and size filters upon request.
Please feel free to contact us for any request and we will reply promptly.Please feel free to contact us for any request and we will reply promptly.
Technical indicators
| Product Name | Bandpass filter |
| Frequency Range | 1000MHz (spot frequency) |
| -1dB bandwidth | 3MHz |
| Centre insertion loss | ≤4dB |
| VSWR | ≤1.5 |
| Out-of-band rejection | ≥45dB@ f0±10MHz |
| ≥75dB@ f0±20MHz | |
| port connector | SMA-K (one yin and one yang) |
| Size | 92*47*20mm |
| Impedance | 50 OHMS |
Nots
Filter Operating Temperature Range: -40℃~+70
Filter storage temperature range：-55℃~+85℃
No acidic, alkaline or other harmful gas around the filter.
There should be no strong magnetic field or ferromagnetic material in the vicinity of the filter.
Filters should be protected from light: some types of filters may be sensitive to light, so they need to be protected from direct sunlight.
Filters should be protected from dust and shock: filters should be stored in a clean environment to avoid dust and debris from entering the inside of the filter, and also need to be protected from vibration and shock.
Customer Concerns
Flexible design
XST ensures stable filter performance through the following design steps.
1. determine the application requirements: clear filter application scenarios and performance indicators, frequency range, the required bandwidth, insertion loss, etc..
2. Calculate the resonance frequency: the resonance frequency is the core of point frequency filter design.
3. Select suitable circuit components: Select suitable circuit components according to the actual application.
4. Circuit design and simulation: simulate the designed filter circuit so that its frequency response meets the design requirements.
5. Consideration of actual circuit factors: Evaluate and compensate for the performance, parasitic parameters and non-ideal factors that may affect the filter.
6. Prototype testing and optimisation: make and test the prototype of the point frequency filter, and fine-tune the circuit parameters according to the test results to optimise the performance of the filter.
7. consider the temperature and aging factors: the design needs to consider the long-term application, temperature and time changes may affect the parameters of the circuit components (such as resonant frequency), must take appropriate measures to ensure that the stability of the filter.
Superior Performance
XST produces filters with the following properties.
High selectivity: The filters are able to accurately select the desired frequency signals while effectively suppressing unwanted frequency components.
Steep transition bands: The filters can distinguish signals of different frequencies more effectively.
Low insertion loss: In the passband, the filter has low insertion loss.
High rejection band suppression: In the rejection band, the out-of-band signals of the filter are effectively suppressed.
Temperature Stability: Filter performance is stable in extreme temperature environments and does not shift with time or environmental conditions.
Mechanical stability and durability: The filter has sufficient mechanical strength and durability to resist environmental factors such as vibration and shock.
Cost Control
XST's independent and complete product line, with development, manufacturing, and testing all done in-house, allows XST to guarantee filter quality and performance while significantly reducing filter costs, ensuring that our customers are able to purchase microwave products, such as filters, at the lowest prices on the market without sacrificing quality.
Our products are chosen not only because of the price, but also because of the overall value and long-term return on investment we provide. We believe that by offering competitive pricing and superior products and services, we can become a long-term partner.
Service
Warranty Service: During the 3-year warranty period, XST provides free repair service in case of filter failure due to non-man-made damage. Returns and refunds are provided in the event that the filter does not meet customer expectations or has a quality problem. We will pay for shipping costs incurred due to the original defect.
Spare parts supply: XST has a complete spare parts warehouse to ensure that we can provide the required parts to customers in a timely manner.
Technical support and consulting: XST provides professional technical consulting services for microwave products, one-on-one answers to technical problems encountered by users in the process of use.
XST consistently builds long-term partnerships with customers with high-quality products, customised solutions, efficient services, and provides lifelong technical support services in the microwave field in addition to the products, creating value for customers in a sustainable and efficient manner.
We provide OEM and ODM services for microwave devices (filters, couplers, power dividers, combiners, duplexers, isolators, attenuators, loads, etc.), please feel free to contact us if you have any needs, we are confident to be your lifelong friendly partner.