The direct broadcast system (DBS) in North America operates at 12.2–12.7 GHz, with a transmit carrier power of 120 W, a transmit antenna gain of 34'dB, and a worst-case slant angle (30°) distance from the geostationary satellite to Earth of 39,000 km. The 18-inch receiving dish antenna has a gain of 33.5 dB and followed by a low-noise block (LNB). The overall system is shown below. Find the following The link budget for the received carrier power at the antenna; i. ii. If an extra 20 dB loss due to weather condition e.g. heavy rain to be considered in the system design, calculate the new received power; iii. Circular polarisation (CP) is sometimes used in DBS, explain the advantages of CP over linear polarisation from EMC pérspectives.

The direct broadcast system (DBS) in North America operates at 12.2–12.7 GHz, with a transmit carrier power of 120 W, a transmit antenna gain of 34'dB, and a worst-case slant angle (30°) distance from the geostationary satellite to Earth of 39,000 km. The 18-inch receiving dish antenna has a gain of 33.5 dB and followed by a low-noise block (LNB). The overall system is shown below. Find the following The link budget for the received carrier power at the antenna; i. ii. If an extra 20 dB loss due to weather condition e.g. heavy rain to be considered in the system design, calculate the new received power; iii. Circular polarisation (CP) is sometimes used in DBS, explain the advantages of CP over linear polarisation from EMC pérspectives.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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