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 |
------------------------------------------------------------------------------------------------------------- |
Printed 2007-09-18 16:52:20 | Page 2 of 8 |