Title
Near field resolution measurements with the leaky wave antennas
Author
Deiana, D.
Nennie, F.
Boekema, R.B.
van Rossum, W.
Monni, S.
Contributor
Giannopoulos, A. (editor)
Warren, C. (editor)
Publication year
2017
Abstract
N-path filters exploiting switched-series-R-C networks can realize high-Q blocking-tolerant band-pass filters. Moreover, their center frequency is flexibly programmable by a digital clock. Unfortunately, the time variant nature of these circuits also results in unwanted signal folding. This paper proves analytically that folding can be reduced and band pass filtering can be improved by adding an inductance in series with the switched-R-C network. In contrast, a shunt capacitor degrades band-pass filter performance. The interaction between the reactive series impedance and the switched capacitors of an N-path filter complicates analysis due to memory effects associated with reactive components. Assuming N identical signal paths with 1/N duty cycle, we show it is possible to solve the set of differential equations, by assuming that the signals in each path only differ in delay. Analytical equations are verified versus simulations, and the benefits in filter properties and reduction in signal folding are demonstrated.
Subject
2015 Observation, Weapon & Protection Systems
ED - Electronic Defence RT - Radar Technology
TS - Technical Sciences
Defence, Safety and Security
Azimuthal resolution
Ground Penetrating Radar
Leaky wave slot
Rayleigh resolution
Antennas
Economic and social effects
Frequency bands
Geological surveys
Ground penetrating radar systems
Radar
Radar antennas
Ground Penetrating Radar
Laboratory measurements
Leaky wave antennas
Leaky waves
Operational bandwidth
Rayleigh
Ultra wide-band antennas
Wide frequency bands
Traveling wave antennas
To reference this document use:
http://resolver.tudelft.nl/uuid:1cba1f39-14a8-4c97-8179-a9ad65d5fc9b
TNO identifier
780719
Publisher
Institute of Electrical and Electronics Engineers Inc.
ISBN
9781509054848
Source
9th International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2017. 28 June 2017 through 30 June 2017
Article number
7996086
Document type
conference paper