| Responsible: Effland |
| | *************************************************************************************** |
| | RID 1672 |
| | Doc. Title | | Noise Temperature and Gain Slope | Originator: Shin’ichiro Asayama | Date: 2007-09-10 |
| | Considerations for Band 6 Cartridge |
| | Operating over 4-12 GHz IF Band |
| | Description: | | This document describes that the Band 6 specifications could be met over the 4.5 to 11 |
| | GHz IF band. However, is there any plan to modify the mixer-preamp to shift the IF |
| | frequency coverage for production cartridges? |
| Suggested Solution: |
| | *************************************************************************************** |
| | RID 1680 |
| | Doc. Title | | Band 6 Cartridge Design Report, 8.1, | Originator: Yoshinori Uzawa | Date: 2007-09-11 |
| | Noise Performance and Image Band |
| | Rejection |
| | Description: | | 6-10 GHz IF bandwidth is not 4-8 GHz. |
| Suggested Solution: | | Although 4-12 GHz IF bandwidth is attractive, the performance at frequencies below 6 GHz |
| | should be improved to have a consistency with the other bands (4-8GHz). Is it possible to |
| | redesign the IF amplifier to have better performance at lower frequencies? |
| | *************************************************************************************** |
| | RID 1681 |
| | Doc. Title | | Band 6 Cartridge Design Report, 8.9, | Originator: Yoshinori Uzawa | Date: 2007-09-11 |
| | Polarization Isolation |
| | Description: | | Measured polarization isolations are higher than the specification. |
| Suggested Solution: | | Since the optics seems simple and theoretical simulations showed good performance, the |
| | cross polarization should meet the specification, if the optical components were well |
| | fabricated. Please check errors in the measurement system, e.g., linearity of the mixer. |
| | Measurements using a conventional Schottky diode mixer may help to solve the problem. |
| | *************************************************************************************** |
| | RID 1682 |
| | Doc. Title | | Band 6 design Report | Originator: Stephane Claude | Date: 2007-09-11 |
| | Description: | | The IF band for most cartridges is 4-8GHz. For Band 9 it is 4-12GHz. How is handled the |
| | 6-10 GHz from Band 6? Does the backend need a special bandpass filter? |
| Suggested Solution: | | Clarify |
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| Printed 2007-09-18 16:52:20 | Page 2 of 8 |