He aha ka RF attenuator?

ʻO ka Attenuator kahi mea uila i hoʻohana nui ʻia i nā lako uila, a ʻo kāna hana nui ka hāʻawi ʻana i ka attenuation. He mea hoʻohana ia i ka ikehu, e huli ana i ka wela ma hope o ka hoʻohana ʻana i ka mana. ʻO kāna mau kumu nui: (1) Hoʻoponopono i ka nui o ka hōʻailona ma ke kaapuni; (2) I ke kaapuni ana i ke kaapuni ana, hiki ke hoohana ia e heluhelu pololei i ka waiwai attenuation o ka pūnaewele i hoao; (3) E hoʻomaikaʻi i ka hoʻohālikelike ʻana i ka impedance, inā makemake kekahi mau kaʻa I ka wā e hoʻohana ʻia ai kahi impedance haʻahaʻa paʻa, hiki ke hoʻokomo ʻia kahi attenuator ma waena o ke kaapuni a me ka impedance ukana maoli e pale i ka hoʻololi impedance. No laila i ka hoʻohana ʻana i ka attenuator, he aha nā mea e pono ai ke nānā?

E hoʻolauna mākou iā ia ma lalo nei:

1. Ka pane alapine: ka bandwidth alapine, hōʻike maʻamau i ka megahertz (MHz) a i ʻole gigahertz (GHz). Loaʻa i nā attenuators kumu nui ka bandwidth ma kahi o 5 GHz, me ka bandwidth kiʻekiʻe o 50 GHz.

2. Atenuation laulā a me ka hoʻolālā:

E pili ana ka pae hoʻohaʻahaʻa i ka ratio attenuation, maʻamau mai 3dB, 10dB, 14dB, 20dB, a hiki i 110dB. ʻO ke ʻano o ka attenuation: 10lg (input/output), no ka laʻana: 10dB characterization: input: output = attenuation lehulehu = 10 manawa. Hoʻokaʻawale ʻia ke ʻano i ʻelua mau ʻano: paʻa paʻa atenuator a me step proportional adjustable attenuator. ʻO kahi attenuator paʻa e pili ana i kahi attenuator me kahi lākiō paʻa mau i loko o kekahi mau alapine. ʻO kahi Step attenuator kahi attenuator me kahi waiwai paʻa a me ka lakene hiki ke hoʻololi ʻia. Hoʻokaʻawale ʻia ʻo ia i ka manual step attenuator a me programmable step attenuator.

3. ʻO ke poʻo o ka pilina a me ka nui o ka pilina:

Hoʻokaʻawale ʻia ke ʻano hoʻohui i ke ʻano BNC, ʻano N, ʻano TNC, ʻano SMA, ʻano SMC, a me nā mea ʻē aʻe.

Hoʻokaʻawale ʻia ka nui pili i nā ʻōnaehana metric a me imperial, a ua hoʻoholo ʻia ka mea i luna e like me nā koi o ka hoʻohana ʻana; inā pono e hoʻopili ʻia nā ʻano mea hoʻohui, hiki ke hoʻolako ʻia nā mea hoʻopili pili pili, no ka laʻana: BNC i N-type connector, etc.

4. Helu kuhikuhi:

He nui nā koi o nā hōʻailona attenuation, ʻoi aku ka nui o nā ʻano aʻe: ka pololei o ka attenuation, ke kūpaʻa i ka mana, ka impedance hiʻohiʻona, ka hilinaʻi, ka hana hou, etc.

E like me ka mea hoʻolālā oattenuators, Hiki iā Jingxin ke kākoʻo iā ʻoe me nā ʻano attenuators like ʻole e like me kāu hoʻonā RF.