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Forum: RF, Microwave, Antennas and Optics

RF, microwave, antennas and optics questions. Radio/TV/satellite transmitters and receivers.

  1. Sticky Thread Sticky: LEGALS/UNLEGALS FILES----NEW RULES

    Started by james, 26th December 2002 15:44
    • Replies: 0
    • Views: 33,900
    26th December 2002, 15:44 Go to last post
    • Replies: 0
    • Views: 33,673
    9th May 2007, 08:28 Go to last post
  2. Sticky Thread Sticky: 26V Current Sense Amplifier

    Started by mmatheson, 16th May 2018 16:43
    • Replies: 0
    • Views: 3,147
    16th May 2018, 16:43 Go to last post
  1. Closed: Advantages and disadvantages of FM and AM modulation

    Started by Ajish Babu S, 24th January 2007 10:54
    • Replies: 5
    • Views: 120,974
    25th January 2007, 21:54 Go to last post
  2. Closed: FR4 dielectric constant

    Started by Olxx, 27th June 2003 02:08
    4 Pages
    1 2 3 ... 4
    • Replies: 63
    • Views: 109,405
    12th March 2005, 14:59 Go to last post
  3. Closed: What is the difference between 13.56 MHz and 125kHz RFID tag

    Started by fuhrer, 30th June 2005 05:36
    • Replies: 11
    • Views: 90,646
    27th February 2007, 09:30 Go to last post
  4. VERY GOOD COLLECTION OF HFSS 10 PROJECTS

    Started by emadi, 17th December 2007 07:09
    7 Pages
    1 2 3 ... 7
    • Replies: 128
    • Views: 82,827
    15th May 2013, 13:25 Go to last post
  5. Closed: Latest RF tutorial uploaded

    Started by odyseus, 21st June 2004 23:10
    5 Pages
    1 2 3 ... 5
    • Replies: 87
    • Views: 78,110
    28th August 2010, 10:29 Go to last post
  6. Closed: Antenna gain how to dB to dBi

    Started by snkhan, 19th September 2007 17:53
    • Replies: 7
    • Views: 77,724
    21st September 2007, 17:42 Go to last post
  7. Closed: what is 3dB frequency

    Started by rsunni, 18th May 2009 12:21
    • Replies: 10
    • Views: 71,446
    10th September 2009, 12:28 Go to last post
  8. Closed: Why we need modulation?

    Started by RatanaRETH, 23rd January 2007 05:07
    2 Pages
    1 2
    • Replies: 21
    • Views: 66,250
    10th September 2012, 13:25 Go to last post
  9. Closed: How to convert dBc to dBm? Thanks.

    Started by MOUSTIX, 31st January 2009 03:15
    • Replies: 9
    • Views: 56,207
    21st July 2010, 04:09 Go to last post
  10. Closed: Need to know equivalent transistor for bc547

    Started by sanjubluerock3, 1st July 2010 08:15
    • Replies: 2
    • Views: 55,869
    1st July 2010, 14:37 Go to last post
  11. Closed: How to define the Capacitor value for DC block?

    Started by John_li, 21st August 2005 03:24
    • Replies: 9
    • Views: 54,844
    15th March 2011, 04:14 Go to last post
  12. Closed: how to measure inductance?

    Started by chunlee, 23rd December 2005 01:18
    2 Pages
    1 2
    • Replies: 24
    • Views: 53,745
    14th June 2011, 06:02 Go to last post
  13. Closed: what is the difference between diplexer and duplxer?

    Started by cuizw, 14th August 2005 11:33
    • Replies: 4
    • Views: 47,257
    20th August 2005, 18:34 Go to last post
  14. Closed: What is electrical length used for?

    Started by STOIKOV, 20th June 2006 03:29
    • Replies: 7
    • Views: 46,845
    22nd June 2006, 13:40 Go to last post
  15. Closed: The best RF design book?

    Started by crazyamd, 5th February 2005 07:51
    6 Pages
    1 2 3 ... 6
    • Replies: 111
    • Views: 44,265
    21st October 2008, 21:31 Go to last post
  16. Closed: What is the meaning of transition frequency?

    Started by Mac7978, 24th May 2004 11:14
    • Replies: 10
    • Views: 44,217
    25th November 2011, 23:12 Go to last post
  17. Closed: What are the available antenna design tools for PCB or 868-915 Mhz bands?

    Started by beano040461, 30th November 2002 10:14
    7 Pages
    1 2 3 ... 7
    • Replies: 135
    • Views: 42,491
    27th September 2010, 05:07 Go to last post
  18. Closed: Determining Inductance/Capacitance from S-Parameters

    Started by asubraman, 29th June 2007 21:14
    • Replies: 9
    • Views: 41,121
    3rd August 2013, 07:17 Go to last post
  19. Closed: Interdigital Capacitor Design Using ADS

    Started by electronicman, 13th February 2007 00:53
    • Replies: 8
    • Views: 40,486
    20th February 2007, 15:45 Go to last post
  20. Closed: UHF & FM antenna booster circuits

    Started by palesha, 26th December 2002 18:21
    • Replies: 14
    • Views: 40,150
    9th August 2011, 17:30 Go to last post
  21. Closed: what is meaning of S11, S12,S13......?

    Started by anwer_sbh, 18th April 2007 07:53
    • Replies: 12
    • Views: 39,168
    22nd April 2008, 02:58 Go to last post
  22. Closed: Np/m to dB/m conversion?

    Started by djkross, 16th April 2008 04:51
    • Replies: 2
    • Views: 38,456
    23rd November 2011, 16:53 Go to last post
  23. Closed: what is IQ Modulation

    Started by CQCQ, 14th January 2007 11:43
    • Replies: 6
    • Views: 37,773
    5th February 2007, 15:29 Go to last post
  24. Closed: What is the relation between dB AND dBm

    Started by ravisankar, 12th February 2008 01:49
    • Replies: 18
    • Views: 37,243
    29th June 2014, 06:01 Go to last post
  25. Closed: Low cost PC-based 3 GHz two port VNA with USB interface

    Started by gadly, 15th October 2012 14:43
    • Replies: 18
    • Views: 35,007
    16th October 2014, 00:28 Go to last post
    • Replies: 6
    • Views: 34,971
    16th April 2011, 14:09 Go to last post
  26. Closed: Want to make Coldplay's Xyloband glow

    Started by hollunder, 14th March 2012 00:32
    • Replies: 1
    • Views: 34,655
    27th June 2012, 18:01 Go to last post
  27. Closed: how to make a 10mH choke coil at home !!!!!!!!!!

    Started by ahmed osama, 13th August 2010 17:31
    • Replies: 3
    • Views: 34,347
    14th August 2010, 15:12 Go to last post
  28. Closed: What is the difference between RF choke and inductor?

    Started by jerry117, 5th July 2004 02:49
    • Replies: 9
    • Views: 34,132
    21st July 2004, 17:29 Go to last post
  29. Closed: Antenna gain and Directivity.

    Started by Lord Loh., 6th January 2006 12:22
    • Replies: 14
    • Views: 33,650
    4th December 2006, 19:39 Go to last post