Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by mckinson

  1. M

    About the influence of the speaker ,motor to the antenna .

    Hi , Since the cell phone get smaller and smaller ,so sometimes the antenna is very close to the speaker and motor , strongly impact the antenna efficiency ,cause the TRP and TIS poor . So anybody has the comments to decrease the influence of the speaker and motor ? Best regards !
  2. M

    The influence of the inductor to the antenna .

    Hello guys : Anybody know why add a series inductor on the input signal line of speaker can reduce the impact to the antenna .?Appreciate !
  3. M

    output power in GSM & EDGE (Question)

    I think maybe related to the modulation scheme .right ?
  4. M

    About the condutive spurious for GSM 900 band inside ?

    Hello guys : Anybody has the idea for the condutive spurious for Gsm 900 band inside ? We tested on the Chanel 62 ,found on the frequency 896.4 and 900.6, 904.2 was marginal . What do you think maybe impact this issue , Vco ,PA and tranceiver ouput matching to the PA ? Best...
  5. M

    best book for understanding WiMAX required

    best book on wimax You can find this book "Fundamentals of WiMAX: Understanding Broadband Wireless Networking (Prentice Hall Communications Engineering and Emerging Technologies Series) by Jeffrey G. Andrews, Arunabha Ghosh, Rias Muhamed, "
  6. M

    GSM peak phase error - help

    I think you maybe you need to tune the PA ramping profile ,may be the PA open or close too early or too late cause the Phase error and switching .
  7. M

    Balun test using two port network analyzer

    baluns for rf network analyzer I think this way just can transfer the S2p to S3p ,right ?
  8. M

    The ORFS for 8-pslk issue

    Hi vfone Many thanks for your kindly help . We use the RFMD 3161 ,the polar type .
  9. M

    The ORFS for 8-pslk issue

    orfs edge Dear Guys : These days we find the ORFS due to modulation and switching is very poor for EDGE 8-psk ,but for the GMSK is very good . I have checked all the power supply both for the Tranceiver and PA ,no found something wrong . Could you please give me some suggestion ...
  10. M

    GSM CDMA WIMAX HELP NEEDED

    That is a great web , best regards !
  11. M

    What are the GSM specifications?

    GSM Spec. I think you can refer to the 3gpp spec 51010,you can get more detail standard .
  12. M

    About the modulation for the DVB-H ?

    Great ,but what is the OFDM function ? Added after 2 seconds: Great ,but what is the OFDM function ?
  13. M

    About the modulation for the DVB-H ?

    Hello guys : These days ,we found the DVB-H has the modulatio scheme : QPSK ,16QAM ,OFDM . Why need these 3 modulation ? what is the relationship between the 16QAM and OFDM ? I am confusion .Best regards.
  14. M

    Are there any 5G mobiles out?

    5g mobile LTE for 4G or 5G ?
  15. M

    What protocol is used at air interface (Um interface) of GSM?

    GSM protocols Hi It seems can not download the specification from the ETSI website . Right ?

Part and Inventory Search

Top