You are an antenna engineer and you are asked to design a high directivity/gain antenna for a space-borne communication system operating at 10 GHz. The specifications of the antenna are such that its pattern consists basically of one major lobe and, for simplicity, no minor lobes (if there are any minor lobes they are of such very low intensity and you can assume they are negligible/zero). Also it is desired that the pattern is symmetrical in the azimuthal plane. In order to meet the desired objectives, the main lobe of the pattern should have a half-power beamwidth of 10 degrees. In order to expedite the design, it is assumed that the major lobe of the normalized radiation intensity of the antenna is approximated by U(0,4) = cos"(0) and it exists only in the upper hemisphere (0 <0

You are an antenna engineer and you are asked to design a high directivity/gain antenna for a space-borne communication system operating at 10 GHz. The specifications of the antenna are such that its pattern consists basically of one major lobe and, for simplicity, no minor lobes (if there are any minor lobes they are of such very low intensity and you can assume they are negligible/zero). Also it is desired that the pattern is symmetrical in the azimuthal plane. In order to meet the desired objectives, the main lobe of the pattern should have a half-power beamwidth of 10 degrees. In order to expedite the design, it is assumed that the major lobe of the normalized radiation intensity of the antenna is approximated by U(0,4) = cos"(0) and it exists only in the upper hemisphere (0 <0

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

Related questions

Q: The answer according to the book is 1.4

A: Step 1: The cutoff frequency for the TE10 mode in a rectangular waveguide is given by: where:c - is…

Q: A microwave oven cooks food by irradiating the food with microwave power generated by a magnetron.…

A: tan δc=0.35Operating frequency = 2.45∗109 HzFind: -The average power per cubic meter.

Q: It turns out that the depth in the ocean to which airborne electromagnetic signals can be detected…

Q: From an operational point of view, what are the major differences between the Yagi-Uda and the…

Q: Electrical Engineering 1) A 90° degree corner reflector, in conjunction with a /2 dipole feed, is…

A: Given: A 90° degree corner reflector, in conjunction with a λ/2 dipole feed, is used in a radar…

Q: Compare the quarter-wavelength monopole and half-wavelength dipole in terms of their radiation…

A: We need to compare the given antenna .

Q: roblem 1. Propagation loss and bending loss Assume you design a waveguide nat is 3 mm long and…

Q: 4. short answers a. What is the effective antenna area of an antenna at 2500 MHz, if the gain is 13…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: The radiation and loss resistances of an ante iation efficiency a. TRUE b. FALSE

A: The radiation efficiency is equal to where =radiation resistance and =Loss resistance. Hence,…

Q: Q2 You are an antenna engineer and you are asked to design a high directivity/gain antenna for a…

A: ANTENNA : An antenna is a metallic structure that gathers and/or transmits radio electromagnetic…

Q: Handwrite and step by step solutions A high-frequency sinusoidal signal is delivered to two…

Q: s an assignment for antenna course work, you are asked to design a mobile phone antenna which is…

A: We need to tell about Design issues for mobile antenna .

Q: 2. Up to this point, you have relied on the boundary conditions to solve the mode fields in a…

A: What is the most-used boundary condition you used for a structure with conducting boundaries?

Q: If the effective height of an areal is 1/150th of the wavelength, then estimate its radiation…

A: The aerial is basically a wire antenna. The radiation resistance (Rr) of an aerial can be expressed…

Q: An air- filled rectangular waveguide has dimensions of a=6 cm and b-4 cm. the signal frequency is 3…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 5. What it is the approximate length of a dipole antenna that is resonant at 150 MHz?

A: We need to find out length of antenna to resonant at given frequency.

Concept explainers

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.

Question

2.9. You are an antenna engineer and you are asked to design a high directivity/gain antenna for a
space-borne communication system operating at 10 GHz. The specifications of the antenna
are such that its pattern consists basically of one major lobe and, for simplicity, no minor
lobes (if there are any minor lobes they are of such very low intensity and you can assume
they are negligible/zero). Also it is desired that the pattern is symmetrical in the azimuthal
plane. In order to meet the desired objectives, the main lobe of the pattern should have a
half-power beamwidth of 10 degrees. In order to expedite the design, it is assumed that the
major lobe of the normalized radiation intensity of the antenna is approximated by
U(0, 4) = cos"(0)
and it exists only in the upper hemisphere (0 <0 < x/2,0 <¢ < 2n). Determine the:
(a) Value of n (not necessarily an integer) to meet the specifications of the major lobe. Keep
5 significant figures in your calculations.
(b) Exact maximum directivity of the antenna (dimensionless and in dB).
(c) Approximate maximum directivity of the antenna based on Kraus' formula (dimension-
less and in dB).
(d) Approximate maximum directivity of the antenna based on Tai & Pereira's formula
(dimensionless and in dB).

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

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.

Similar questions

If we consider the resistor, capacitor and inductor as the load connected to the twovoltage sources, at which range of frequencies can the load be considered capacitive(two decimal accuracy required)?
Derive the array factor equation for uniform and non-uniform planar array antenna.
At 20 GHz, the gain of a parabolic dish antenna of I meter diameter and 70%efficiency is-------
Problem 3. A receiver front end has a noise figure of 10 dB and a gain of 60 dB and a bandwidth of 12 MHz. The input signal power is 10-11 W. The antenna temperature is 180° K. Find Te, Ts, Nout, SNRin and SNRout. You may use To=290° K and Boltzmann's constant equals 1.38 x 10-23 J/K.