1 / 17

Development of Wideband Feed Prototype for Excellent Gain Tables

This ATA-TAP feed prototype developed in December 17, 2002, features wideband coverage from 0.5 to 11 GHz with second models for H-plane and E-plane cross-polarization. The feed tests show excellent matching, impedance, gain, and internal loss. The design by S. Weinreb includes MMIC InP PHEMT technology with simulation validations at 300K, 77K, and 4K temperatures. The feed properties encompass spillover, input impedance, and resonances with improved performance at various angles for noise reduction at 10 GHz.

nerys
Télécharger la présentation

Development of Wideband Feed Prototype for Excellent Gain Tables

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. Feed/Receiver Developments ATA-TAP December 17, 2002 WJW

  2. Prototype Wideband Feeds 0.5 – 11 GHz

  3. Second Model H-Plane

  4. Second Model E-Plane

  5. Cross-Polarization Both Models

  6. Gain Tables

  7. Feed Tests • Excellent (16 dB) match • Agrees with EM calcs on • Impedance • Gain • Internal Loss

  8. Measured LNA Temperature Measured and simulatednoise for WBA13 at 300K, 77K and 4K MMIC InP PHEMT .18 m Design by S. Weinreb

  9. Tip Circuit Board

  10. Dewar Layout

  11. Input Match and Cross Talk

  12. Feed Properties • Spillover • Input impedance • <Zin>=206 Ohms • Smax=1.35

  13. Odd Mode Resonances: No Cover

  14. Odd Mode Resonances: w. Cover

  15. Resonances w. & w/o. Cover: Absorber Added

  16. Spillover vs. Zenith Angle Tsys Zenith Angle

  17. Noise Summary for 10 GHz

More Related