QUESTION

Question

Hello can you explain please difference between antennas M20047 and M20057. They have different prices, but I checked datasheets and they are almost the same.

Answer 1

Hi,

The difference between the 2 are as follows:

M20047 the SAW filter is after the LNA

M20057 the SAW filter is before the LNA

Best regards,

Yu Kai Yeung

Comments

Thanks for the answer, but how this affects on performance? What I should consider to make a choice?

---

Hi,

Using M20047 would be better when the signal is weak. The M20057 would be better when you have a stronger signal so having the filter before LNA will prevent the out of band noises to saturate the LNA.

Best regards,

Yu Kai Yeung

---

Hm, thanks for the answer, what if device very close to user (human) body, but on the open clear sky field, which antenna is better?

---

Hi,

Are there other signals such as LTE nearby? if so M20057 would be better.

Best regards,

Yu Kai Yeung

---

Sorry for late response. We have on the same board Bleutooth & Wifi antenna.