Filter ng lukab

Ano ang cavity filter?

Mga Bentahe ng Mga Filter ng Cavity

Kumpara sa iba pang mga uri ng mga filter ng microwave (bandpass mga filter), ang mga filter ng lukab ay may matatag na istraktura, matatag at maaasahang pagganap, mataas na halaga ng Q, at mahusay na pag-aalis ng init, at ang kanilang high-end parasitic passband ay malayo. Kaya nga, Ang mga filter ng lukab ay ginagamit sa mga makabuluhang istasyon ng base ng komunikasyon. Laganap ang mga aplikasyon.

Ang pinakamahusay na mga filter ng Cavity ay may kasamang coaxial, suklay, interdigital, waveguide, at iba pang mga anyo ng istruktura. Mayroon silang mataas na halaga ng Q at angkop para sa paggawa ng filter na may mataas na dalas. Karaniwang sinasaklaw ng mga ito ang mga frequency mula 0.1G hanggang 42 G. Mayroon silang matatag na istraktura at malaking kapasidad ng kuryente. , mahusay na pagganap, at iba pang katangian.

Mga hakbang sa pag-customize ng filter ng lukab

1. Gumamit ng CoupleFil o iba pang tool software upang matukoy ang pagkakasunud-sunod ng filter, pagsasaayos ng zero point, at topology ayon sa mga hadlang tulad ng insertion loss at suppression, at pagkatapos ay makuha ang coupling bandwidth (the coupling bandwidth divided by the center frequency is the hi normalized coupling coefficient) and external quality facto Q_e
2. According to the filter frequency, use AppCAD software to obtain the approximate size of the single cavity. Then use HFSS to first determine the size of the single cavity, and then simulate the coupling part of the filter to obtain the specific size of the coupling window and the structural form and size of the tap. (Sa puntong ito, the cavity filter simulation design environment is completed);
3. According to the coupling coefficient and Q_e, use the circuit design simulation software in HFSS or ADS to perform circuit simulation to further verify parameters such as insertion loss and suppression, and make minor adjustments to the coupling coefficient.
4. According to the dimensions obtained in the previous step, use 3D design software such as SolidWorks or pro/e to establish a 3D model, draw engineering drawings, and submit them to the machining factory. The standby processing parts will be returned, installed, and debugged (a network analyzer is required). According to the debugging, The results determine whether the design process needs to be iterated and then surface treatments (such as black paint) applied to the filter as needed.

Pinakamahusay na mga kinakailangan sa detalye ng Cavity Filter (halimbawa)

• Dalas ng sentro: 1.0GHz (435Mhz)
• Bandwidth: 20MHz (2Mhz)
• Suppression: >35dB@(1020~1040)MHz
• Pagkawala ng pagsingit: <1dB Return loss: >20dB

Karaniwang application ng disenyo ng Cavity Filter

It has a good frequency selection filtering effect in circuits and electronic high-frequency systems and can suppress unwanted signals and noise outside the frequency band.
Used in aviation, aerospace, Radar, Komunikasyon, electronic countermeasures, radyo at telebisyon, and various electronic test equipment

Cavity Filter Mga tagubilin para sa paggamit

Bigyang-pansin ang shell na mahusay na pinagbabatayan kapag ginagamit ito, kung hindi man, makakaapekto ito sa out-of-band suppression at flatness indicator.
Maaaring palitan ang mga input/output port

DIY Cavity Filter I-customize ang Libreng Quote

Maaari kaming magbigay ng customized na Coaxial Cavity filter, libreng sample, at iba pang mga serbisyo. MOQ≥1

Natutuwa kaming tumugon sa anumang mga kahilingan; mangyaring ipadala ang iyong mga katanungan at mga order.

Mangyaring magbigay ng insertion loss, pagtanggi, mga frequency band ng pagtanggi, at uri ng connector para mas ma-customize ang eksaktong cavity resonator filter para sa iyo.

175Mhz Cavity Filter 170Mhz~180Mhz

320Mhz Cavity Filter 303Mhz~335Mhz

Mga Tip sa filter ng bandpass ng Cavity BP

1. Choosing a trustful supplier. Have you ever encountered such a problem when customizing cavity filters from the factory? The output waveform effect you want is different from the effect you actually test. If you customize with us, we will send you the test results on the instrument before shipping. We will ship the goods only after your confirmation.
2. Understand your frequency range and bandwidth needs. Cavity filters are designed to operate at specific frequencies and passbands, so make sure the filter you select meets the requirements of your application and system. To calculate a filter’s passband, use the formula passband = center frequency x bandwidth percentage. Halimbawa, if you need a filter with a 1% bandwidth at 915 MHz, the passband would be 915 MHz x 0.01 = 9.15 MHz, implying that the filter should cover the frequency range 910.425 MHz sa 919.575 MHz.
3. Understand your insertion loss and rejection needs. The amount of signal power lost when passing through the filter is referred to as insertion loss, and the amount of signal power attenuated outside the passband is referred to as rejection. To achieve optimal performance and avoid interference, you want to minimize insertion loss and maximize rejection. You can look at the filter’s specifications to see what its insertion loss and rejection values are at different frequencies.
4. Understand your power handling and temperature stability needs. Power handling refers to the maximum amount of RF power that the filter can handle without damage or degradation, and temperature stability refers to the filter’s ability to maintain performance over a wide temperature range. Gusto mo ng filter na kayang hawakan ang iyong inaasahang antas ng kuryente at gumana sa iyong kapaligiran nang hindi naaapektuhan ang mga katangian nito.
5. Paghambingin ang iba't ibang uri at modelo ng cavity filter. Maaaring ipatupad ang mga filter ng lukab gamit ang iba't ibang mga teknolohiya at arkitektura, kasama ang combline, helical, interdigital, waveguide, koaxial, at dielectric resonator. Sa laki, gastos, pagganap, at pagiging kumplikado, bawat uri ay may mga pakinabang at disadvantages. Maaari mong ihambing ang iba't ibang uri at modelo ng mga filter ng cavity online o offline sa pamamagitan ng pagtingin sa kanilang mga tampok, mga pagtutukoy, mga pagsusuri, at mga presyo.
6. Kung mayroon kang anumang mga katanungan o alalahanin, kumunsulta sa mga eksperto o tagagawa. Ang mga filter ng lukab ay mga sopistikadong device na nangangailangan ng maingat na disenyo at pag-tune upang makamit ang pinakamahusay na mga resulta. Kung hindi ka sigurado kung aling filter ang bibilhin o kung paano ito gagamitin nang maayos, you can seek advice from experts or manufacturers with experience and knowledge in this field. They can assist you in selecting the best filter for your needs and, if necessary, provide technical support and guidance.

Harmonics ng Dalas

This is our video transmitter. Without a frequency filter on the oscilloscope, you can see on this test instrument. It produces a frequency harmonics.