Published June 6, 2006
In an effort to better combine the editorial content of our magazine with our newly developed and retooled on-line presence, we have decided to expand Harlan's RF and microwave engineering advice into a monthly feature that appears in Microwave Journal.
Harlan has selected one question from his "Ask Harlan" column to be featured in the June issue. Harlan will be monitoring the responses and will ultimately choose the best answer to the question. Although all of the responses to the featured question will be posted on our web site, we plan to publish the winning answer in the August issue.
You be the expert: Please take a few moments and provide an answer to this month's featured question. Good luck and we look forward to reviewing your answer.
All responses must be submitted by July 7, 2006, to be eligible for the participation of the June question.
Charles Werner from Gamma Remote Sensing AG has submitted this month's question:
1. How good are direct digital synthesizers at generating FMCW signals? I am looking at a system that uses a frequency translation loop Analog Devices AD9858 to get output in the range of 2.1 to 2.3 GHz for an FMCW radar.
2. What is the best way to get this signal heterodyned to the range of 4.1 to 4.3 GHz and what configuration of mixer/LO is recommended/required?
The winning response will win a free book from Artech House, along with an "I Asked Harlan!" t-shirt. In addition, everyone who submits a legitimate response will be sent an "I Asked Harlan!" t-shirt.
If your response is selected as the winner, you'll receive a free book of your choice from Artech House. Visit the Artech House on-line bookstore at www.artechhouse.com for details on hundreds of professional-level books in microwave engineering and related areas (maximum prize retail value $150).
Disclaimers: Microwave Journal reserves the right to determine the legitimacy of all responses. The determination of the winning response is not based on any set criteria and is based only on the opinions of the editors of Microwave Journal.
Questions and answers submitted to Ask Harlan are collected for sole use by Microwave Journal and www.MWJournal.com. Names and company affiliations will be published with questions and answers that qualify according to our editorial policies. Email addresses are collected in case we need to contact you.
Mailing address information submitted for the delivery of the T-Shirt is collected solely for this purpose.
Email addresses and mailing addresses are not published and are not shared with any third party.
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Entry into the T-Shirt give away is while supplies last.