topic MMZ09332BT1: Difference between data sheet and s-parameters in s2p file in Wireless MCU https://community.nxp.com/t5/Wireless-MCU/MMZ09332BT1-Difference-between-data-sheet-and-s-parameters-in/m-p/424316#M533 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I am interested in using the MMZ09332BT1 in one of my projects which will incorporate the amplifier into an RF transmitter, transmitting at 145MHz. I was comparing the input return loss on the data sheet to that given in the s-parameters file for my frequency. In the data sheet (<A href="http://cache.freescale.com/files/rf_if/doc/data_sheet/MMZ09332B.pdf" title="http://cache.freescale.com/files/rf_if/doc/data_sheet/MMZ09332B.pdf">http://cache.freescale.com/files/rf_if/doc/data_sheet/MMZ09332B.pdf)</A> the graph shows an input return loss of around -15 to -20 (pg.21). The s2p file however, shows an s11 magnitude of 0.626794634 for 144MHz. In dB this is 20log(0.627) which is only ~ -4dB.</P><P></P><P><STRONG>Why is there this large difference and which value should I take to be more accurate?</STRONG></P><P></P><P>Also is there a 1db compression point value and a ACPR value available for the frequency range of 136–174 MHz?</P><P></P><P>Thanks in advance for any help.</P><P></P><P>Cheers</P><P>Elliot</P></BODY></HTML> Thu, 19 Nov 2015 00:55:19 GMT elliottaylor 2015-11-19T00:55:19Z MMZ09332BT1: Difference between data sheet and s-parameters in s2p file https://community.nxp.com/t5/Wireless-MCU/MMZ09332BT1-Difference-between-data-sheet-and-s-parameters-in/m-p/424316#M533 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I am interested in using the MMZ09332BT1 in one of my projects which will incorporate the amplifier into an RF transmitter, transmitting at 145MHz. I was comparing the input return loss on the data sheet to that given in the s-parameters file for my frequency. In the data sheet (<A href="http://cache.freescale.com/files/rf_if/doc/data_sheet/MMZ09332B.pdf" title="http://cache.freescale.com/files/rf_if/doc/data_sheet/MMZ09332B.pdf">http://cache.freescale.com/files/rf_if/doc/data_sheet/MMZ09332B.pdf)</A> the graph shows an input return loss of around -15 to -20 (pg.21). The s2p file however, shows an s11 magnitude of 0.626794634 for 144MHz. In dB this is 20log(0.627) which is only ~ -4dB.</P><P></P><P><STRONG>Why is there this large difference and which value should I take to be more accurate?</STRONG></P><P></P><P>Also is there a 1db compression point value and a ACPR value available for the frequency range of 136–174 MHz?</P><P></P><P>Thanks in advance for any help.</P><P></P><P>Cheers</P><P>Elliot</P></BODY></HTML> Thu, 19 Nov 2015 00:55:19 GMT https://community.nxp.com/t5/Wireless-MCU/MMZ09332BT1-Difference-between-data-sheet-and-s-parameters-in/m-p/424316#M533 elliottaylor 2015-11-19T00:55:19Z