Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-speed FSK Modulator Using Switched-capacitor Resonators   In this paper, an ultra-fast frequency shift-keying (FSK) modulation
technique based on switched capacitor resonators is presented. It is
demonstrated that switching a reactive component such as a capacitor, in a
high-Q resonator with proper switching signal can preserve the stored energy
and shift it to a different frequency. Switching boundaries are found by
continuity of electric charge and magnetic flux. It is shown that if switching
time is synchronous with zero crossing of the voltage signal across the
switched capacitor, impulsive components can be avoided and continuity of
electric charge is satisfied without energy dissipation. We use this property
to realize a fast binary frequency-shift keying (FSK) modulator with only a
single RF source. In this technique, the modulation rate is independent of the
resonator bandwidth and can be as high as the lower carrier frequency.
Experimental results are presented to validate the simulations.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ