一、Characteristics
Metal cavity bandpass filter (also known as BPF bandpass filter) is cut by the whole metal, solid structure, high reliability, input/output 50Ω impedance matching, easy to cascade use, input/output interchangeable use; Stable and reliable performance in the full temperature range, meeting the requirements of military working environment; The frequency coverage range is 0.5~26.5GHz, the high-end parasitic passband is far, the consistency is good, the volume is small, the Q value is high, the standing wave is small, the in-band amplitude frequency characteristic is flat, the insertion loss is small, and the out-of-band suppression is high. Can meet the continuous impact force of 30 grams within 11 milliseconds; It can meet the continuous vibration of 100 grams in the frequency of 5 ~ 500Hz.
Limit parameter: the maximum input power is 50W; The operating temperature range is -55℃~+85℃; The storage temperature range is -65℃~+125℃. When the cavity bandpass filter is used, pay attention to the good grounding of the shell, otherwise it will affect the out-of-band suppression and flatness index.
Metal cavity bandpass filter
二、Model & Electrical characteristics
| Metal cavity bandpass filter (BPF bandpass filter) model and parameter table |
Part No | Center frequency (MHz) | Band Width(MHz) | V.S.W.R | Insertion loss(dB) | Ripple in BW (dB) | Attenuation(dB) |
| BPF746 - 8 | 746 | 8 | ≤ 1.3 : 1 | ≤ 1.7 | ≤ 0.5 | ≥ 50 @ 722 & 778 MHz |
| BPF1000-40 | 1000 | 40 | ≤ 1.5 : 1 | ≤ 1.8 | ≤ 0.5 | ≥ 80 @ fo ± 120 MHz |
| BPF2000-400 | 2000 | 400 | ≤ 1.5 : 1 | ≤ 1.0 | ≤ 1.0 | ≥ 50 @ fo ± 400 MHz |
| BPF2630-50 | 2630 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-2.43GHz & 2.83-9.6GHz |
| BPF2830-50 | 2830 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-2.63GHz & 3.03-9.6GHz |
| BPF3660-50 | 3660 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-3.46GHz & 3.76-12GHz |
| BPF3860-50 | 3860 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-3.66GHz & 4.06-12GHz |
| BPF4690-50 | 4690 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-4.49GHz & 4.89-15GHz |
| BPF4890-50 | 4890 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-4.69GHz & 5.09-15GHz |
| BPF5500-1200 | 5500 | 1200 | ≤ 1.8 : 1 | ≤ 2.0 | ≤ 1.0 | ≥30@DC-4.5GHz & 6.5-8GHz |
| BPF5500-2000 | 5500 | 2000 | ≤ 1.8 : 1 | ≤ 3.0 | ≤ 1.0 | ≥ 35 @ fo ± 200 MHz |
| BPF5720-50 | 5720 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-5.52GHz & 5.92-15GHz |
| BPF5920-50 | 5920 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-5.72GHz & 6.12-15GHz |
| BPF6000-1010 | 6000 | 1010 | ≤ 2.0 : 1 | ≤ 3.0 | ≤ 0.8 | ≥ 35 @ fo ± 1000 MHz |
| BPF6500-1200 | 6500 | 1200 | ≤ 1.8 : 1 | ≤ 2.0 | ≤ 1.0 | ≥30@DC-5.5GHz & 7.5-10GHz |
| BPF6750-50 | 6750 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-6.55GHz & 6.95-15GHz |
| BPF6950-50 | 6950 | 50 | ≤ 1.5 : 1 | ≤ 2.0 | ≤ 1.0 | ≥50@DC-6.75GHz & 7.15-15GHz |
| BPF7500-1200 | 7500 | 1200 | ≤ 1.8 : 1 | ≤ 2.0 | ≤ 1.0 | ≥30@DC-6.5GHz & 8.5-10GHz |
| BPF10600-1060 | 10600 | 1060 | ≤ 1.5 : 1 | ≤ 0.8 | ≤ 0.5 | ≥40@DC-8.48GHz & 12.7-16GHz |
| BPF11700-1170 | 11700 | 1170 | ≤ 1.5 : 1 | ≤ 0.8 | ≤ 0.5 | ≥40@DC-9.38GHz & 14-17GHz |
| BPF15700-400 | 15700 | 400 | ≤ 1.8 : 1 | ≤ 2.0 | ≤ 1.0 | ≥ 30 @ fo ± 900 MHz |
| BPF16900-400 | 16900 | 400 | ≤ 1.8 : 1 | ≤ 2.0 | ≤ 1.0 | ≥ 30 @ fo ± 900 MHz |
| Note: Due to many product models, only some representative models are listed in the table |
三、Application & attention
The cavity bandpass filter has: Wide frequency coverage, far high-end parasitic passband, good frequency selection filtering, good consistency, small size, high Q value, small standing wave, flat in-band frequency characteristics, low insertion loss, high out-of-band suppression, high power and good suppression of out-of-band useless signals and noise, etc. The products are widely used in RF circuit, electronic countermeasures, aviation, aerospace, radar, satellite communication, mobile communication and various electronic test equipment.
Such products are highly customized products, because the indicators of microwave components are related to each other, so the user needs to clearly state the indicator requirements before customization. Once the product is made, it cannot be changed. If there are indicators that exceed the physical limit of the material itself, the best indicators can be achieved through negotiation between the two parties. The company can customize cavity filter, high-pass filter, low-pass filter, band-stop filter, band-pass filter.
