Truly balanced step recovery diode pulse generator with single power supply

2013 International Conference on Advanced Technologies for Communications (ATC 2013)

Tinet

Piette³

2013

This paper describes a simple and original method to generate short UWB pulses, obtained by the transient response of a notch filter. Whose the first principle is based on a technique On-Off Keying signal with a carrier frequency centered at the rejection frequency (requires a very fast switch and a sinusoidal carrier). Now, we propose an all-digital solution, using a Phase-Shift Keying modulation to produce short pulses. We compare the both methods and show that pulses with a spectrum satisfying the FCC indoor regulatory mask in USA. The second method (without fast switch) which can be applied to the generation of pulses matched to any type of available spectrum mask (European, Asia, imaging, medical, outdoor, radar, …). In both cases, circuits are realized at FCC to demonstrate these principles. It is shown that the measurements are in good agreement with the theory.

Section: Introductionmentioning

confidence: 99%

UWB pulse generator switched by the PSK modulation based on a band pass filter with two zeros transmissions

2013 International Conference on Advanced Technologies for Communications (ATC 2013)

Tinet

Piette³

2013

“…Several architectures are proposed in the literature for the generation of short pulses for ultra wideband applications [2][3][4][5][6]. However, no solution has emerged definitively.…”

Section: Introductionmentioning

confidence: 99%

A low-cost UWB pulse generator for medical imaging, through-wall imaging and surveillance systems

2012 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE)

Piette

2012

This paper describes a low-cost architecture for the generation of subnanosecond pulses based on the transient response of passive filters. Two prototypes are developed to demonstrate experimentally this approach. The first one covers the band 1.61 GHz to 10.6 GHz for medical imaging systems and the second one the band 1.99 GHz to 10.6 GHz for through-wall imaging and surveillance systems. In both cases, we obtain pulses with spectral densities well adapted to the FCC rules.

“…Various methods are proposed in the literature for the generation of subnanosecond pulses. These include generators based on step-recovery diodes (SRD) [3] or, to achieve integrated devices, the techniques of baseband pulse transposition, pulse combination, or baseband pulse filtering [4]. Due to its simplicity, the latter is of particular interest for the realization of low-cost devices.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a Low-Cost Ultrawideband Transmitter in the 3.1–10.6-GHz Band

IEEE Trans. Circuits Syst. II

Piette

2012

An architecture for the generation of short pulses based on a filter step response technique is described. One uses the transient response of a passive circuit to an input square signal. This approach is experimentally demonstrated by the generation of subnanosecond pulses compatible with the indoor frequency mask authorized by the Federal Communications Commission for ultrawideband applications. It is shown that a pulse repetition frequency of 1 GHz can be achieved. The effect of the transition time of the source is analyzed and is shown not to be a limitation.