Patch Antenna Array design

Anonymous
timer Asked: Oct 19th, 2018
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Just read and then write page and half or two pages that you summarizing the whole thing that we did as a group about the design. The project that I'm going to summarize is already past due but the work we did, we have to point out the key points and what we did as a group.

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Antenna Array and Power Feed Design ( Agile sprint) Cover Letter: The following pages are the memo we sent to our client, along with feedback about our design from the company representatives. In our memo we go over the agile sprint process as outlined in the document “Agile Sprint Algorithm”. We briefly explained each of the steps, along with the actions we took to accomplish them. We have been in constant communication with our client, so they had a good understanding of where we were in the process of our design. The feedback from Max was less specific. He had a little concern about us dividing tasks, but this was a specific requirement for the design sprint when working individually on our subsystem. John’s feedback gave specific bulletined notes that reflected portions of our block diagram. He gave good advice about the impedance matching of our design, giving specific values that we can start with regarding our feedline Client Memo: Dear Max and John This memo will recap and present the results of our team’s design sprint. The sprint was a twoweek process, consisting of five stages. The first stage was to map the ideas for the sprint, which we decided on a block diagram for our design process. We designated John as our team’s decider and Ally as the historian. With our end objective in mind, we contacted you to fill in the details of what our design needed to be and narrow the scope of our initial brainstorming. The second stage of the sprint was to disassemble the system into subsystems and amass competing solutions for each subsystem. We defined four subsystems for our design: antenna, simulation, power feed, and manufacturing. With four team members, we were able to assign each subsystem to a member to start individually creating as many possible solutions and ideas. This led to the third stage of the sprint where we came together, shared our ideas and voted on the best solutions for each subsystem. We were sharing and contributing our ideas, drafting different block diagrams, and demonstrating initial simulations. With these refined solutions, we were able to create a block diagram that reflects the sprint process. It has a work flow connecting our subsystems, going further into the details and considerations required to complete each task. We have steps to achieve the initial prototype, with an iterative feedback technique to hone our design. Then after a strong base design is completed, we have ideas for spring to explore to go into more details. We hope this accurately reflects your expectations of us. Any feedback, questions or concerns you have from this memo and block diagram can be discuss. We appreciate your time and input and are excited to start creating some patch antennas. – Feedback from John Hi all – thanks for sending the info. Here are some initial thoughts: · Antenna design process looks good o Inset-fed patch antenna is baseline design, simple to design (~1 hr) o Impedance match is set by inset distance into patch element, but could also include quarter-wave impedance matching transformer if needed at each feedpoint o Impedance of single element is commonly 50 Ohms to match system impedance of feedline. For this type of series / parallel feed approach, you may want the feedpoint impedances to be different (need to study this to see if different impedances are needed along the line to match the entire array). o The main input at the center of the two series-fed branches could be designed to have the necessary 50 Ohm input impedance but with 100 Ohm output impedance to each array. This is a natural splitter (see link below). I guess my thought here is that the impedances can be selected as needed along the array, but the overall input impedance just needs to be 50 Ohms. § https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwio4KqH9 P7dAhWbIjQIHS6BBX4QFjAAegQICRAC&url=https%3A%2F%2Futah.instructure.com%2Ffiles %2F29599039%2Fdownload%3Fdownload_frd%3D1&usg=AOvVaw2MzoOmnagAln01v8E3Nd EQ · Simulation approach looks good o ADS moment-method solver for 2D geometries is applicable and runs quickly o Feedline approach and simulated performance will be key to overall design success · Manufacturing • I had thought PCBs would be fabricated by external vendor such as Sierra Circuits not on campus. § https://www.protoexpress.com/ o May be good to compare use of Rogers materials vs Panasonic Megtron6 to see if there are cost differences, we use Rogers which is more expensive but from what I’ve heard Megtron6 may be equivalent performance with lower cost § https://www.protoexpress.com/blog/tale-of-two-materials/ Regards, John Feedback from Max Hello Team We have received and reviewed your agile sprint memo, and we are satisfied that this deliverable has been met. The presented design process is sound and should result in the right deliverables, which are a complete design with detailed simulations and theoretical calculations of performance by the end of this semester, and a manufactured and fully validated (with measurements) unit produced next semester. ...
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DENIQUE
School: Cornell University

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Goes above and beyond expectations !

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