Band Pass Filter COFDM Spiral filter
BPF Band Pass Filter RF band-pass cavity filter COFDM Spiral filter frequency customized vcan1884
![BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 16 Bandpass Filter COFDM Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/Cofdm-Spiral-filter.jpg?resize=950%2C950&ssl=1)
A band-pass filter is a device that allows waves of a specific frequency band to pass while blocking other frequency bands.
A band-pass filter refers to a filter that can pass frequency components in a certain frequency range, but attenuates frequency components in other ranges to a very low level, as opposed to the concept of a band-stop filter.
Πίνακας περιεχομένων
Χαρακτηριστικά
![σπείρα φίλτροilter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 17 螺旋滤波器](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/Cofdm-Spiral-filter-2.jpg?resize=1000%2C533&ssl=1)
Προσδιορισμός
Each Helical filter Spiral filter (bandpass filter) is customized according to needs, and the size of different working frequency bands is different.
Είδος | παράμετρος |
Συχνότητα | 830-870Mhz |
απώλειας παρεμβολής | ≤1.2db |
απώλεια επιστροφής | ≥16db |
Out-of-band απόρριψης | ≥60dB @ 760MHz
≥60dB @ 940MHz |
Υποδοχή | SMA-K |
Βάρος | 0.15κιλό |
Διαστάσεις | 89 * 32 * 20mm |
![COFDM Σπειροειδής φίλτροr RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 18 Cofdm Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/Cofdm-Spiral-filter.png?resize=563%2C436&ssl=1)
![COFDM Σπειροειδής φίλτροr RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 19 COFDM Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/Cofdm-Spiral-filter-size.jpg?resize=680%2C472&ssl=1)
600-620Mhz BandPass Filter
Συχνότητα | 600~ 620 MHz |
Insertion Loss | ≤1.2db |
In-Band Fluctuation | ≤0.3db |
VSWR | ≤1.3 |
Out-Of-Band Suppression | ≥40dB@f0±40MHz |
Withstand Power | 20W |
Υποδοχή | SMA-K |
Διαστάσεις | 89 Χ 32 X 20mm |
Βάρος | 90 γραμμάρια |
![BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 20 BPF Band Pass Filter RF bandpass cavity filter Cofdm Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/BPF-Band-Pass-Filter-RF-bandpass-cavity-filter-Cofdm-Spiral-filter.webp?resize=563%2C436&ssl=1)
806-826Mhz BandPass Filter
Συχνότητα | 806~ 826MHz |
Insertion Loss | ≤1.2db |
In-Band Fluctuation | ≤0.5db |
VSWR | ≤1.3 |
Out-Of-Band Suppression | ≥40dB@DC~755MHz
≥40dB@875~2000MHz |
Withstand Power | 20W |
Υποδοχή | SMA-K |
Διαστάσεις | 89 Χ 32 X 20mm |
Βάρος | 90 γραμμάρια |
![BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 20 BPF Band Pass Filter RF bandpass cavity filter Cofdm Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/BPF-Band-Pass-Filter-RF-bandpass-cavity-filter-Cofdm-Spiral-filter.webp?resize=563%2C436&ssl=1)
857~863Mhz BandPass Filter (860Mhz center)
Συχνότητα | 857~863MHz |
Insertion Loss | ≤1.2db |
In-Band Fluctuation | ≤0.4db |
Standing Wave Ratio | ≤1.3 |
Out-Of-Band Suppression | ≥40dB@FO±20MHz |
Withstand Power | 100-Βάτ |
Υποδοχή | SMA-50K or N-50K optional |
Διαστάσεις | 152 Χ 57 x 30mm |
Βάρος | 90 γραμμάρια |
Θερμοκρασία | -35~+65°C |
![DVB-Tand Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 22 DVB-T 860 Mhz cavity filter bandpass customize from China ODM factory](https://i0.wp.com/ivcan.com/wp-content/uploads/DVB-T-860-Mhz-cavity-filter-bandpass-customize-from-China-ODM-factory.webp?resize=902%2C356&ssl=1)
428-438Mhz 433Mhz BandPass Filter
Συχνότητα | 428~838MHz (433Mhz+/-5Mhz) |
Insertion Loss | ≤2db |
In-Band Fluctuation | ≤0.5db |
VSWR | ≤1.4 |
Out-Of-Band Suppression | ≥40dB@405MHz
≥40dB@461MHz |
Withstand Power | 20W |
Υποδοχή | SMA-50K |
Διαστάσεις | 89 Χ 32 X 20mm |
Βάρος | 90 γραμμάρια |
![BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 23 433Mhz 428-438Mhz BPF bandpass filter dimension](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/433Mhz-428-438Mhz-BPF-bandpass-filter-dimension.webp?resize=563%2C436&ssl=1)
1427.9-1447.9Mhz BandPass Filter
Συχνότητα | 1427.9~ 1447.9MHz |
Insertion Loss | ≤1.0db |
In-Band Fluctuation | ≤0.5db |
VSWR | ≤1.3 |
Out-Of-Band Suppression | ≥40dB@DC~1360MHz
≥40dB@1570~2000MHz |
Withstand Power | 20W |
Υποδοχή | SMA-K |
Διαστάσεις | 60 Χ 50 X 16mm |
Βάρος | 70 γραμμάρια |
![BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 24 1427-1447Mhz BPF Band Pass Filter RF bandpass cavity filter Cofdm Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/1427-1447Mhz-BPF-Band-Pass-Filter-RF-bandpass-cavity-filter-Cofdm-Spiral-filter.webp?resize=816%2C435&ssl=1)
![BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral filter frequency customized vcan1884 25 1400Mhz 1.4G BPF Band Pass Filter RF bandpass cavity filter Cofdm Spiral filter](https://i0.wp.com/ivcan.com/wp-content/uploads/2019/08/1400Mhz-1.4G-BPF-Band-Pass-Filter-RF-bandpass-cavity-filter-Cofdm-Spiral-filter.webp?resize=838%2C296&ssl=1)
606-614MHz Cavity filter test record |
|||||
Δείγμα |
Απώλεια εισαγωγής ≤1,2db |
VSWR≤1.4 |
In-band fluctuation ≤0.6db |
Out-of-band suppression ≥40db@590MHz |
Out-of-band suppression ≥40db@630MHz |
No.1 | 1.05 | 1.2 | 0.4 | 53 | 56 |
No.2 | 1.01 | 1.2 | 0.4 | 51 | 52 |
428-438MHz Helical Filter Test Record |
|||||
Δείγμα |
Insertion loss ≤1.3db |
Return loss≥15db |
In-band fluctuation ≤0.6db |
Out-of-band rejection ≥40db@383MHz |
Out-of-band suppression ≥40db@483MHz |
No.1 | 1.13 | 19 | 0.4 | 43 | 44 |
No.2 | 1.05 | 20 | 0.4 | 44 | 45 |
Συχνές ερωτήσεις
For the helical bandpass filter (BPF) to meet the blue line in the picture, the length of the bandpass filter needs to be increased from 89mm to more than 110mm, and the insertion loss may increase by about 1.
- The minimum bandwidth can only be about 3MHz.
- The performance index of 2MHz is very poor and not ideal.
- The volume size is around 199*120*31mm.
- The CNC machining is very complicated and the cost is higher. The price is RMB 1,600 yuan. (USD220)
Ακόμα έχω μια ερώτηση?
Παρακαλούμε επικοινωνήστε μαζί μας για περισσότερες πληροφορίες.
Στείλτε την ερώτησή σας
Tips you should know when you order
What is the frequency range?
What is the insertion loss requirement?
Suppress 820-851 Mhz,How many DBs are required
The passband is 866-870Mhz.
Κατεβάστε
BPF Band Pass Filter Specification PDF
Products include: cavity filter_bandpass filter_highpass filter_lowpass filter_bandstop filter_notch filter_LC filter_power divider_multi-frequency combiner_cavity duplexer _Coaxial attenuator_Coaxial load_Directional coupler_3dB bridge_Circulator_Isolator.
其他产品有:腔体滤波器_带通滤波器_高通滤波器_低通滤波器_带阻滤波器_陷波器_LC滤波器_功分器_多频合路器_腔体双工器_同轴衰减器_同轴负载_定向耦合器_3dB电桥_环形器_隔离器.
A COFDM-based high-speed wireless image transmission transmitter is proposed for UAV aerial photography and wireless video surveillance, συμπεριλαμβανομένου: a baseband coding and modulation module, which is used to receive the input image data stream and convert it into a baseband modulation signal with a specific spectrum; a radio frequency A module for up-converting the baseband modulation signal to a set frequency; wherein, the baseband coding modulation module includes: baseband framing, frame scrambling, BCH coding, LDPC coding, bit interleaving, constellation mapping, constellation rotation, Time interleaving, time frame mapping, frequency interleaving, pilot insertion, IFFT transformation, διάστημα φύλαξης, spectrum shaping; the radio frequency module includes: digital-to-analog converter (DAC), voltage-controlled oscillator (VCO), up-converter (Modulator ), φίλτρο διέλευσης ζώνης (BPF), power amplification (ΡΑ); using the COFDM-based high-speed wireless image transmission transmitter, the video data transmission rate can be significantly improved in high-speed mobile environments such as drone aerial photography, Meet the requirements of high-definition and ultra-high-definition image transmission.
Κριτικές
Δεν υπάρχουν σχόλια ακόμη.