Phase Noise Estimation for THz Radiation from RTDs and Other Solid-State Sources
Abstract
For imaging and remote sensing applications, the phase noise of the THz generator must be minimized. This can be done as part of the optimization process on the basis of a properly chosen figure of merit. For this, the present paper provides an analytical phase noise expression as a function of the device parameters and operation point. The quantum 1/f theory is used to calculate from first principles the 1/f noise present in the device parameters and in the resulting system frequency from resonant tunneling diodes (RTDs), super-electronic lattice devices (SLEDs), Gunn devices (TEDs), and transit time diodes. In general, quantum If fluctuations in the dissipative elements lead to a Q(-4) dependence of the spectral density of fractional frequency fluctuations and of the corresponding phase noise, where Q is the quality factor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 2000
- Accession Number
- ADP011792
Entities
People
- Peter H. Handel