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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: 26V Current Sense Amplifier

    Started by mmatheson, 16th May 2018 16:43
    • Replies: 0
    • Views: 424
    mmatheson
    16th May 2018, 16:43 Go to last post

  2. Sticky Thread Sticky: Do not post e-books or requests for e-books or ieee papers here!

    Started by klug, 9th May 2007 08:28
    • Replies: 0
    • Views: 31,538
    klug
    9th May 2007, 08:28 Go to last post

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

    Started by james, 26th December 2002 15:44
    • Replies: 0
    • Views: 31,719
    james
    26th December 2002, 15:44 Go to last post

  1. Simple phasing SSB modulator demodulator does not work

    Started by neazoi, Today 01:24
    1 Attachment(s)
    • Replies: 5
    • Views: 156
    vfone
    Today, 16:48 Go to last post

  2. Circuit problem finding

    Started by 000SHREDDER000, 17th November 2018 20:07
    2 Pages •
    1 2
    9 Attachment(s)
    • Replies: 32
    • Views: 623
    000SHREDDER000
    Today, 12:48 Go to last post

  3. Simulate four-coil system on CST to realize the wireless power transfer

    Started by wfywfy1201, 17th November 2018 16:39
    2 Attachment(s)
    • Replies: 4
    • Views: 149
    vfone
    Today, 08:27 Go to last post

  4. Does the optimum source reflection coefficient change when adding resistor?

    Started by skatefast08, Yesterday 06:17
    2 Attachment(s)
    • Replies: 2
    • Views: 180
    BigBoss
    Yesterday, 17:05 Go to last post

  5. Bidirectional HF amplifier question

    Started by neazoi, 16th November 2018 01:52
    1 Attachment(s)
    • Replies: 6
    • Views: 282
    neazoi
    Yesterday, 00:32 Go to last post

  6. [SOLVED] EMF detection frequency

    Started by 000SHREDDER000, 15th November 2018 21:44
    1 Attachment(s)
    • Replies: 1
    • Views: 121
    barry
    17th November 2018, 17:41 Go to last post

  7. Feeding SA612AN outputs with audio, what will happen?

    Started by neazoi, 14th November 2018 17:40
    1 Attachment(s)
    • Replies: 0
    • Views: 137
    neazoi
    14th November 2018, 17:40 Go to last post

  8. C band SATCOM question

    Started by senmeis, 7th November 2018 16:34
    1 Attachment(s)
    • Replies: 2
    • Views: 338
    senmeis
    14th November 2018, 13:56 Go to last post

  9. Embed a RFID label inside a soccer ball

    Started by keyvan_h, 11th July 2018 04:46
    • Replies: 7
    • Views: 380
    FvM
    14th November 2018, 09:32 Go to last post

  10. Is this correct design of RF trace ?

    Started by coolpixs4, 13th November 2018 06:35
    2 Attachment(s)
    • Replies: 2
    • Views: 189
    BigBoss
    13th November 2018, 17:15 Go to last post

  11. Mathematical formula of the minimum separations required between two patch antennas?

    Started by Suo, 7th November 2018 16:02
    1 Attachment(s)
    • Replies: 7
    • Views: 455
    Georgy.Moshkin
    13th November 2018, 02:53 Go to last post

  12. in/out stability circles enclose smith chart, but k-stability factor is all above 1?

    Started by skatefast08, 12th November 2018 05:59
    1 Attachment(s)
    • Replies: 2
    • Views: 196
    Georgy.Moshkin
    13th November 2018, 02:45 Go to last post

  13. I have a few of questions on an RF amplifier design

    Started by skatefast08, 11th November 2018 23:55
    1 Attachment(s)
    • Replies: 1
    • Views: 137
    vfone
    12th November 2018, 09:25 Go to last post

  14. WR08 with UG-387/U-M Flange "Impedance"

    Started by uri1636, 12th November 2018 06:45
    • Replies: 0
    • Views: 101
    uri1636
    12th November 2018, 06:45 Go to last post

  15. Coaxial feed loop antenna in HFSS

    Started by ycwu, 12th November 2018 00:19
    3 Attachment(s)
    • Replies: 0
    • Views: 110
    ycwu
    12th November 2018, 00:19 Go to last post

  16. [SOLVED] 915Mhz Antenna design

    Started by amirke, 29th October 2018 16:18
    1 Attachment(s)
    • Replies: 18
    • Views: 602
    FvM
    6th November 2018, 23:08 Go to last post

  17. improve radio selectivity

    Started by yoosefheidari, 5th November 2018 22:32
    2 Attachment(s)
    • Replies: 6
    • Views: 260
    yoosefheidari
    6th November 2018, 19:36 Go to last post

  18. What is the ABCD matrix of a short stub and open stub transmission line?

    Started by skatefast08, 29th October 2018 08:40
    2 Pages •
    1 2
    5 Attachment(s)
    • Replies: 24
    • Views: 764
    PlanarMetamaterials
    6th November 2018, 16:58 Go to last post

  19. VCO uses no varicaps. How does it work?

    Started by neazoi, 6th November 2018 11:37
    1 Attachment(s)
    • Replies: 3
    • Views: 179
    betwixt
    6th November 2018, 16:42 Go to last post

  20. Phase shifter vs TTD (delay)

    Started by ktr, 2nd November 2018 13:08
    1 Attachment(s)
    • Replies: 11
    • Views: 413
    vfone
    6th November 2018, 16:39 Go to last post

  21. Block up converter Ka band

    Started by akhilpaulv, 31st October 2018 05:12
    • Replies: 1
    • Views: 153
    biff44
    6th November 2018, 14:40 Go to last post

  22. Draw circular spiral in cst mws

    Started by kela3kela, 6th November 2018 08:52
    5 Attachment(s)
    • Replies: 1
    • Views: 116
    kela3kela
    6th November 2018, 11:59 Go to last post

  23. [SOLVED] 2 Power amplifiers in parallel

    Started by levnu, 31st October 2018 07:11
    • Replies: 18
    • Views: 660
    levnu
    6th November 2018, 06:55 Go to last post

  24. choke ring antennas against multipath effect

    Started by senmeis, 28th October 2018 11:12
    • Replies: 4
    • Views: 298
    PlanarMetamaterials
    5th November 2018, 16:45 Go to last post

  25. RF-DC conversion efficiency calculations in ADS

    Started by bitspilani, 22nd July 2018 10:34
    2 Attachment(s)
    • Replies: 1
    • Views: 255
    bitspilani
    5th November 2018, 12:31 Go to last post

  26. Avoiding the crystal filter or multi-band phaser in multi-band SSB transceiver.

    Started by neazoi, 30th October 2018 13:53
    1 Attachment(s)
    • Replies: 9
    • Views: 507
    neazoi
    4th November 2018, 18:05 Go to last post

  27. How to match ceramic resonator to 50R?

    Started by neazoi, 2nd November 2018 15:55
    4 Attachment(s)
    • Replies: 10
    • Views: 410
    FvM
    4th November 2018, 15:46 Go to last post

  28. Looking to buy ready made RF transmitter (40 to 200) khz

    Started by waelsf, 1st November 2018 14:22
    • Replies: 7
    • Views: 305
    vfone
    1st November 2018, 19:51 Go to last post

  29. Element overlapping unit cell in frequency selective surface

    Started by HughDaMann, 29th October 2018 18:59
    1 Attachment(s)
    • Replies: 5
    • Views: 284
    PlanarMetamaterials
    1st November 2018, 15:51 Go to last post

  30. How to extract S-parameters without EM field solvers?

    Started by parps, 22nd October 2018 17:21
    • Replies: 11
    • Views: 512
    volker@muehlhaus
    31st October 2018, 17:00 Go to last post
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