• Choke Inductors in RF Phantom Circuit

      Radi, Amjad; School of Engineering
      This research work provides examples of how different inductors can be used for RF isolation in a range of circuits from relatively narrow band applications like portable devices up to broadband networks for data distribution. The different types of inductors used in these applications are identified and discussed. As an RF circuit designer choosing RF inductor choke might become a challenge, as this inductor is critical to get the desired signal from the antenna to get received to get processed and deny the undesired one from passing through. Common choke type are the ones used for common applications such as radio reception (FM and AM), modern digital radio reception (XM and DAB) and GPS. A failure of choosing this RF choke can cause the loss of the desired signal, increasing noise level and therefore failure of design. In this research work, the author would experiment, discuss and show results for choke inductors used for 100MHz which is used for FM reception and 220MHz which is used for DAB radio.
    • Using Facial Features to Produce an Augmented Reality System

      Sharma, Pragya; School of Engineering
      Under the direction of Anthony Choi, Ph.D. In the following work, an augmented reality system is proposed that takes the gaze of the eye, along with facial movements for assistance, as an input to allow the user to interact with a sample menu from a restaurant. Currently, the only way for a customer to order food at a restaurant is by touching a menu in person or by having the customer touch a screen. In either instance, the customer is having to interact with surfaces that are shared by many individuals, with the risk of contracting any number of illnesses. Such is a bigger problem when it comes to living through a pandemic, for instance, where interaction between shared surfaces poses a higher risk of exposure to the virus. Using an already trained neural network that incorporates pre-identified facial landmarks that every user possesses, the program can keep track of the user’s gaze and show the positions of both the left and right pupils, respectively. Along with this, the program begins with the user opening their mouth to pass a certain threshold and starts to read input. The user guides the cursor with the movement of their face within the green box shown on screen. By stopping facial movement, the user can select a menu item with the wink of their left eye. While conducting tests to see if the program was displaying correct coordinates, user testing took place and it was found that nine times out of ten, the program was displaying the correct coordinates. With more practice, the user was able to get used to using their facial movements to guide the cursor, although the cursor control speed could be better adjusted for future testing. Along with this, such exaggeration of facial movements could be adjusted so that the user does not feel awkward utilizing the system.