BPF Band Pass Filter RF bandpass Cavity filter Cofdm Spiral Filter Frequency حسب الطلب vcan1884

Band Pass Filter COFDM Spiral filter

BPF Band Pass Filter RF band-pass cavity filter COFDM Spiral filter frequency customized vcan1884

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.

الميزات

تخصيص

Each Helical filter Spiral filter (مرشح تمرير الموجة) is customized according to needs, and the size of different working frequency bands is different.

بند	معامل
تكرر	830-870ميجاهيرتز
فقدان الإدراج	≤1.2db
تعويض الخساره	≥16db
خارج من الفرقة الرفض	60dB ≥ و @760MHz 60dB ≥ و @940MHz
الموصل	SMA-K
وزن	0.15كلغ
الأبعاد	89 * 32 * 20مم

 

600-620Mhz BandPass Filter

تكرر	600~ 620 ميجا هرتز
فقدان الإدراج	≤1.2db
In-Band Fluctuation	≤0.3db
VSWR	≤1.3
Out-Of-Band Suppression	≥40dB@f0±40MHz
Withstand Power	20W
الموصل	SMA-K
الأبعاد	89 X 32 X 20mm
وزن	90 غرام

806-826Mhz BandPass Filter

تكرر	806~ 826MHz
فقدان الإدراج	≤1.2db
In-Band Fluctuation	≤0.5db
VSWR	≤1.3
Out-Of-Band Suppression	≥40dB@DC~755MHz ≥40dB@875~2000MHz
Withstand Power	20W
الموصل	SMA-K
الأبعاد	89 X 32 X 20mm
وزن	90 غرام

857~863Mhz BandPass Filter (860Mhz center)

تكرر	857~863MHz
فقدان الإدراج	≤1.2db
In-Band Fluctuation	≤0.4db
نسبة الموجة الدائمة	≤1.3
Out-Of-Band Suppression	≥40dB@FO±20MHz
Withstand Power	100-واط
الموصل	SMA-50K or N-50K optional
الأبعاد	152 س 57 x 30mm
وزن	90 غرام
درجة الحرارة	-35~+65 درجة مئوية

428-438Mhz 433Mhz BandPass Filter

تكرر	428~838MHz (433Mhz+/-5Mhz)
فقدان الإدراج	≤2db
In-Band Fluctuation	≤0.5db
VSWR	≤1.4
Out-Of-Band Suppression	≥40dB@405MHz ≥40dB@461MHz
Withstand Power	20W
الموصل	SMA-50K
الأبعاد	89 X 32 X 20mm
وزن	90 غرام

1427.9-1447.9Mhz BandPass Filter

تكرر	1427.9~ 1447.9MHz
فقدان الإدراج	≤1.0db
In-Band Fluctuation	≤0.5db
VSWR	≤1.3
Out-Of-Band Suppression	≥40dB@DC~1360MHz ≥40dB@1570~2000MHz
Withstand Power	20W
الموصل	SMA-K
الأبعاد	60 X 50 X 16mm
وزن	70 غرام

	606-614MHz Cavity filter test record
عينة	خسارة الإدراج ≤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
عينة	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

Tips you should know when you order

What is the frequency range?

What is the insertion loss requirement?

Suppress 820-851 ميجاهيرتز,How many DBs are required

The passband is 866-870Mhz.

 

تحميل

BPF Band Pass Filter Specification PDF

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A COFDM-based high-speed wireless image transmission transmitter is proposed for UAV aerial photography and wireless video surveillance, بما فيها: 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, ترميز LDPC, bit interleaving, constellation mapping, constellation rotation, Time interleaving, time frame mapping, frequency interleaving, pilot insertion, IFFT transformation, فترة الحراسة, spectrum shaping; the radio frequency module includes: digital-to-analog converter (DAC), voltage-controlled oscillator (VCO), up-converter (المغير ), مرشح تمرير النطاق (BPF), تضخيم الطاقة (السلطة الفلسطينية); 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.