Nigute ushobora gukuramo passband ya filteri ihindagurika hamwe nubusanzwe busanzwe?

Kugirango uhaze ibyifuzo byoroshye, Jingxin itezimbere akayunguruzo keza kugirango umukiriya yikemure wenyine, kandi atanga umurongo ngenderwaho wo kuyihuza neza nkurugero rukurikira rwa filteri ya VHF.

1. Kongera gutunganya uburyo bwaAkayunguruzoJX-SF1-152174-215N
Akayunguruzo kagenewe guhuza hejuru ya 15 MHz kandi ikagira umurongo wa passband ya 8 MHz.

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2. Ibikoresho bisabwa
Umuyoboro wisesengura ushobora kwerekana igihombo no kugaruka.
Muri passband, igihombo cyo gushiramo kigomba kuba ≤ 1.7dB;igihombo cyo kugaruka kigomba kuba ≥20dB
Ibikoresho byamaboko : 6mm ifungura-impera;Imashini iboneye

3. Kongera guhuza uburyo
Ubu buryo buzasobanura inzira yakoreshejwe kubice byahujwe mbere na centre ya 160.3MHz, hamwe na 8 MHz.
Nkuko bigaragara ku gishushanyo cya 1, imiyoboro ya rezonator yagenwe nka F1, F2, F3, F4, na F5.Imiyoboro ya tuning igena inshuro hagati ya buri pole, nkuko imigozi yo guhuza igenda imbere, inshuro zizaba ziri hasi, mugihe imigozi yo guhuza igenda hanze, kandi numurongo uzaba mwinshi.
F12, F23, F34, F45 ni uguhuza imigozi, iyi migozi igena umurongo wa passband, imiyoboro igenda imbere, kandi irashobora kwagura uruhande rwiburyo rwumuhanda, imigozi igenda hanze irashobora kugabanya uruhande rwiburyo rwumuhanda.

Igishushanyo 1

Intambwe ya 1: Huza akayunguruzo JX-SF1-152174-215N na analyseur y'urusobekerane, nkuko bigaragara ku gishushanyo cya 2

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Igishushanyo 2

Intambwe ya 2 : Shiraho inshuro nkuru ikenewe ya 160.3MHz hamwe nubunini bwa 8MHz

Intambwe3: Inshuro yambere ya 160.3MHz ± 4MHz, Hanze ya bande yo kwangwa 160.3 ± 9MHz na 160.3 ± 14MHz irashobora kugaragara mumirongo yumurongo, nkuko bigaragara mumashusho 3

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Igishushanyo 3

Intambwe zikurikira ninzira yo gukemura inshuro nkuru kuva 160.3MHz kugeza152MHz

1. yimuka ibumoso.

Igicapo ca 4 kirerekana ihinduka rya buri cyuma gikurikirana kuri 152MHz ± 4MHz.

Igicapo 4

1) Nyuma yo kuzunguruka kuri tuning ya F5, komeza ukoreshe 6mm spanner irekure gato ibinyomoro; screwdriver izunguruka imiyoboro ya tuning, uhindure igihombo cyo kugaruka kubiciro byagenwe, Niba igihombo cyo gushiramo no gutakaza ibumoso bidashobora kugera kubiciro byagenwe, the igihombo cyo gushiramo no gutakaza birashobora kugabanuka nukuzenguruka kumasaha cyangwa kuruhande rwamasaha yo guhuza F12, F23, F34 na F45, nkuko bigaragara mumashusho 5.

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20210930142413

Igicapo 5

Igishushanyo cya 6 nigishushanyo cyuzuye cya centre yumurongo kuri 152MHz;umurongo wa 8MHz

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Igicapo 6

Intambwe zikurikira ninzira yo gukemura inshuro nkuru kuva160.3MHzKuri174MHz

1) Umuvuduko uva hasi ugana hejuru, mukurikirane kuzunguruka amasaha yisaha F1 、 F2 、 F3 、 F4 、 F5 kugeza 174MHz ± 4MHz, imiyoboro yose yo guhuza igenda hanze, inshuro ya cavit izahinduka muri rusange kuva hasi kugeza hejuru, passband igenda. Kuri Iburyo.

Igicapo 7 kirerekana ihinduka rya buri cyuma gikurikirana kuri 174MHz ± 4MHz

20210930143105

Igicapo 7

2. igihombo cyo kugaruka kirashobora kugabanuka nukuzenguruka kumasaha cyangwa kuruhande rwamasaha yo guhuza F12, F23, F34 na F45, nkuko bigaragara mumashusho 8

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Igicapo 8

Igishushanyo cya 9 nigishushanyo cyuzuye cya centre yumurongo kuri 166.7MHz;umurongo wa 8MHz

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Igicapo 9


Igihe cyo kohereza: Nzeri-30-2021