mid2 - TEST Student's Name: Utah State University ECE 3410...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Student’s Name: A wireless signal is used to send power and data into an implanted drug-delivery device. The signal consists of a 100kHz sine wave modulated with a 1kHz square wave. The square wave represents digital data. PROBLEM 1 An antenna picks up the wireless signal and delivers it as a current, i S . The current is input to a bridge rectifier as shown below. All diodes have a forward drop of 0.7V at 1mA and n=1.5. The thermal voltage is 25mV. On the following page, draw the rectified signal waveform as accurately as possible. Utah State University page 1 of 9 ECE 3410 - Microelectronics I Midterm 2 TEST 0.75mA -0.75mA -1mA i S t 1mA 0mA R S i S R L v R Antenna Signal R S = R L = 20k Ω
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Draw the output waveform on the axes below. Label the axes accurately, and label the signal’s maxima and minima. Utah State University page 2 of 9 ECE 3410 - Microelectronics I Midterm 2 TEST
Background image of page 2
PROBLEM 2 Now we’ll add a capacitor to convert the rectifier to a peak detector, as shown below. Our goal will be to filter out
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/03/2010 for the course ECE 3410 taught by Professor Cripps,d during the Spring '08 term at Utah State University.

Page1 / 9

mid2 - TEST Student's Name: Utah State University ECE 3410...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online