1 ¡¢ Á¦Ç° ½Åû:
PE43711 Àº °í¼±ÇüÀÇ 7 ºñÆ® µðÁöÅÐ RF ´Ü°è °¨¼è±âÀÔ´Ï´Ù. "DSA" ´Â 0.25 dB¿¡¼ 31.75 dB °¨¼è ¹üÀ§·Î À̵¿ÇÕ´Ï´Ù. ÁÖÆļö ¹üÀ§´Â DC-6GHz ¿¡¼ °¨¼è ½ÇÇö±îÁöÀÔ´Ï´Ù. ÀÌ 50 ohm RF DSA´Â ´ÜÀÏ 5V Àü¿ø °ø±Þ ÀåÄ¡¿¡¼ ÀÛµ¿ÇÏ°í ÁÖÆļö¿Í ¿ÂµµÀÇ ³ôÀº °¨¼è Á¤È®µµ¸¦ À¯ÁöÇϱâ À§ÇØ º´·Ä ¹× Á÷·Ä CMOS Á¦¾î ÀÎÅÍÆäÀ̽º¸¦ Á¦°øÇÕ´Ï´Ù. ¶ÇÇÑ Àü¿øÀ» ÄÓ ¶§ Ãʱ⠰¨¼è »óŸ¦ ¼±ÅÃÇÒ ¼öÀÖ´Â °íÀ¯ ÇÑ Á¦¾î ÀÎÅÍÆäÀ̽º°¡ ÀÖ½À´Ï´Ù. Â÷Æó ½©°ú ¹ÝÀü ¿¬°á º¸È£ ´ÙÀÌ¿Àµå°¡ ÀÖ½À´Ï´Ù.
3 ¡¢ ±â¼ú ÁöÇ¥
1. Àü¿ø °ø±Þ ÀåÄ¡ Àü¾Ð: 5V DC (ÀϹÝÀûÀÎ Àü·ù °ª: 5mA)
2. ÇÁ·Î±×·¥ Á¦¾î °ÔÀÎ °¨¼è ¹üÀ§: 0 ~ 31.75DB ´Ü°è 0.25DB ÀÔ·Â ¹× Ãâ·Â ÀÓÇÇ´ø½º: 50 ¿È
3. ¸ðµâÀº º´·Ä ¹× Á÷·Ä Æ÷Æ® ¸ðµå ±â´ÉÀ» Áö¿øÇÕ´Ï´Ù
4. ´ë¿ªÆø: DC ~ 6GHz (°¨¼è °ªÀº ÁÖÆļö¿¡ µû¶ó ´Ù¸¨´Ï´Ù. ÀÚ¼¼ÇÑ ³»¿ëÀº S21 °î¼± »öÀÎÀ» ÂüÁ¶ÇϽʽÿÀ)
5. ±Ý¼Ó ²®Áú ¹æÆÐ Æ÷ÇÔ
6. Å×½ºÆ® ÇÁ·Î±×·¥ ¹× PDF ȸ·Îµµ Á¦°ø
4 ¡¢ ´Ù¸¥ ¸ðµå ±¸¼º
1. Á÷·Ä ¸ðµå ±¸¼º: J1 J7 ¹× ªÀº J2 ¿¬°á ÇØÁ¦
3 ¼± Á÷·Ä ¸ðµå, ÇÉÀº GND DATA CLK LE
2. º´·Ä Æ÷Æ® C0.5-C16 Á¦¾î ¸ðµå ±¸¼º: ¾Æ·¡ ±×¸²°ú °°ÀÌ J2 ´Ü¶ô ȸ·Î J1 J7 °¨¼è °ª ºÐ¸® (±âº» ¹è´Þ ¸ðµå)
5 ¡¢ Å×½ºÆ® ȸ·Îµµ (PE43702 PE43711 °ú ȣȯµÇ´Â ÇÉ):
±âº» ¹è´Þ ¸ðµå: º´·Ä Æ÷Æ® ¸ðµå, ´ÙÀÌ¾ó ½ºÀ§Ä¡¸¦ »ç¿ëÇÏ¿© °¨¼è¸¦ Á¦¾îÇÕ´Ï´Ù.
6 ¡¢ ÇÁ·Î±×·¥ ±¸¼º
Sbit PE43702_DATA = P3 ^ 3;
Sbit PE43702_CLK = P3 ^ 5;
Sbit PE43702_LE = P3 ^ 7;
¹«È¿ ¾²±â ToPE43702(uint ATT_temp);
/*-----------------------------------------------
PE43702
------------------------------------------------*/
Void ¾²±â ToPE43702 (ATT_temp)
{¼¸íµÇÁö ¾ÊÀº ½¡ j = 0;
Uint ValueToWrite = 0;
ValueToWrite = ATT_temp & 0X7F;//õÌÍÔêÈù±??0
PE43702_CLK = 0;
PE43702_LE = 0;
(J = 0; j<8; j ++)
{If (0x01 = = (ValueToWrite & 0x01))
{PE43702_DATA = 1;} // SDO ÇÉÀ¸·Î º¸³»±â
Else {PE43702_DATA = 0;} // SDO ÇÉ¿¡ 0 º¸³»±â
PE43702_CLK = 1;
ValueToWrite >>= 1; // µ¥ÀÌÅÍ È¸Àü
PE43702_CLK = 0;
}
PE43702_LE = 1; PE43702_LE = 0;
}
º¸ÀÌµå ¸ÞÀÎ (º¸À̵å)
{
WriteToPE43702(50);// 50/4 = 12.5DB áñ??
µ¿¾È (1)
{;}
}
7 ¡¢ ÃøÁ¤ S ÆĶó¹ÌÅÍ
1. °¨¼è 0DB
2. °¨¼è 4DB
3. °¨¼è 8DB
4. °¨¼è 16DB
5. °¨¼è 31.75DB
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