It is desired to achieve a right-hand circularly polarized wave at 475 MHz having a half power beam width of 39°. One of the easiest ways to do this is with a helix antenna. It is to be built with a pitch angle of 12.5° , and the circumference of one turn is to be one wavelength at the center frequency of operation.
(a) Calculate the number of turns needed.
(b) What is the directivity in decibels?
(c) What is the axial ratio of the on-axis fields?
(d) Over what range of frequencies will these parameters remain relatively constant?
(e) Find the input impedance at the design frequency and at the ends of the band.
(f) Evaluate HP at the band ends.
Brokeback Towing Company is at the end of its accounting year, December 31, 2015. The following data that must be considered were developed from the company’s records an...Aug 25 2020
When Sonja returned from a trip to southeast Asia, U.S. customs confiscated the BBQ jerky-like pork she bought for her dorm-mates. This is an example demonstrates the res...Dec 16 2019
Professor Jon Hammer has a pool of 15 multiple-choice questions regarding probability distributions. Four of these questions involve the hypergeometric distribution. What...Apr 04 2020
1) List the trade-offs you would consider for each of the decisions:a) Driving your own car versus public transportation (at least 3 trade-offs)b) Buying a computer now v...Aug 05 2020
Irvine Metals has changed to a new accounting system and wants to verify its calculations. The company has fixed operating costs of $470,000 per year and variable operati...Dec 04 2019
The 25-lb thin plate is suspended from a ball-andsocket joint at O. A 0.2-lb projectile is fired with a velocity of into the plate and becomes embedded in the plate at ...Jun 03 2020
Problem 7-4A (Part Level Submission) Last year (2013), Richter Condos installed a mechanized elevator for its tenants. The owner of the company, Ron Richter, recently re...Jun 24 2020
Give a brief introduction to CEO's Salary in the Organizations. Can you describe the CEO's Salary in the Organizations one should pick? >May 01 2020
The _____ consists of individuals who often leverage information technology to efficiently deliver employee services. A.field generalists' centerB.functional spec...Dec 10 2019
The following balance sheet for the Los Gatos Corporation was prepared by a recently hired accountant. In reviewing the statement you notice several errors.LOS GATOS CORP...Sep 05 2020