Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
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)
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...
See similar textbooks
icon
Related questions
Question
The direct broadcast system (DBS) in North America operates at 12.2–12.7 GHz, with a transmit carrier power of 120 W, a trànsmit 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 iš shown below. Find the following The link budget for the received carrier power at the antenna; i. 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; ii. iii. Circular polarisation (CP) is sometimes used in DBS, explain the advantages of CP over linear polarisation from EMC pérspectives. iv. Take patch antenna as an example, give two methods of realising CP? v. Design a patch antenna operating at the centre frequency of the DBS using Rogers’ FR4 which has ăn dielectric constant of 3.38 and thickness of 1.5 mm. vi. Find the input impedance at its resonance on the Smith chart (assume the system impedance Zo is 50 Q) DBS satellite LNB R CNR G, G, F DBS receiver To be continued
Transcribed Image Text:The direct broadcast system (DBS) in North America operates at 12.2–12.7 GHz, with a transmit carrier power of 120 W, a trànsmit 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 iš shown below. Find the following The link budget for the received carrier power at the antenna; i. 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; ii. iii. Circular polarisation (CP) is sometimes used in DBS, explain the advantages of CP over linear polarisation from EMC pérspectives. iv. Take patch antenna as an example, give two methods of realising CP? v. Design a patch antenna operating at the centre frequency of the DBS using Rogers’ FR4 which has ăn dielectric constant of 3.38 and thickness of 1.5 mm. vi. Find the input impedance at its resonance on the Smith chart (assume the system impedance Zo is 50 Q) DBS satellite LNB R CNR G, G, F DBS receiver To be continued
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Link Budget of Satellite
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS