1. Remcom Inc. 315 S. Allen St., Suite 416  State College, PA 16801  USA Tel: 1-814-861-1299  Fax: 1-814-861-1308  sales@remcom.com  www.remcom.com © 2011 Remcom Inc. All rights reserved. Waveforms

2. Waveform Properties Select from: –Blackman envelope, Chirp, Gaussian, Gaussian derivative, Hamming envelope, Hanning envelope, Raised cosine, Root raised cosine, Sinusoid, Tukey envelope, User- defined waveform Carrier frequency: Used to determine the reflection, transmission, and diffraction coefficients of materials Pulse width / bandwidth: Defines width of pulse in the time- or frequency-domain If the dispersive option is engaged, calculation of E-field as a function of time will include the dispersion on the waveform pulse as it propagates

3. Waveform Properties (2)

4. Default Waveform: Sinusoid Defined by carrier frequency, effective bandwidth, and phase offset The effective bandwidth, B, is used to calculate the carrier-to-interferer ratio when transmitted waveforms overlap

5. Sinusoid Waveform

6. Other Waveform Types Generic pulse shapes: –Gaussian, Gaussian derivative DSP filter shapes: –Blackman envelope, Hamming envelope, Hanning envelope, Tukey envelope Digital communications pulse shapes: –Raised cosine, Root raised cosine

7. User-Defined Waveform Specify time-domain or frequency-domain samples of a waveform by referencing an external file Time-domain samples must be real and causal; frequency-domain samples are typically complex pass-band values

8. User-Defined Waveform (2)

9. Effect of Waveforms on Calculations Frequency-dependent materials consider the carrier frequency of rays that interact with it Carrier-to-interferer ratio is computed based on the spectral overlap of collected rays whose waveforms are not orthogonal E-field versus time and power delay profile (P R vs. time) is computed with the effects of dispersion, if enabled