1 / 7

DINO Communications

DINO Communications. Considerations 3 antenna ideas Bent dipole Monopole Helix Timeline. Considerations. We only have a certain diameter surface to work with which rules out certain antennas (parabolic, etc.)

huslu
Télécharger la présentation

DINO Communications

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DINO Communications • Considerations • 3 antenna ideas • Bent dipole • Monopole • Helix • Timeline

  2. Considerations • We only have a certain diameter surface to work with which rules out certain antennas (parabolic, etc.) • We will not be able to encase an antenna in the internal structure of the satellite (horn, etc.) • Deployment of antennas • Budget

  3. Bent Dipole Antenna • Characteristics • 1.22dB (for this bent dipole simulation), however gain can improve to approximately 7dB. • 60 deg x 60 deg (typical half-power beam width, will vary with angle of dipole) • Frequency limits (3MHz to 500MHz) • Linear Polarization

  4. Bent Dipole Antenna • Bent Dipole with increased angle from wave propagation axis (z) • Provided a gain of 4.9dB • As angle was increased from z axis, worked up to a gain of approximately 7dB. However a certain point the dB gain decreased as bent dipole looked more like a dipole

  5. Monopole Antenna • Characteristics • -18dB gain along z axis and 2.3dB gain along y axis (for this monopole antenna) • 45 deg x 360 deg (typical half-power beam width) • No frequency limits • Linear polarization

  6. Helix Antenna • Characteristics • 10dB (typical gain) • 50 deg x 50 deg (typical half-power beam width) • 100 MHz to 3GHz (frequency limit) • Circular polarization • If used, special attention will need to be made as to the angle and position of a helix antenna on the satellite.

  7. Timeline • Rough link power budget by 11-22. Will help find required gain for our satellite antennas. • With gains approximated for satellite antennas, work on design of antennas by 12-6. • Write up of full antenna plan containing link power budget and 1st prototype antennas. (?)

More Related