MULTI-PHASE ULTRA-WIDEBAND SIGNAL GENERATOR USING DIFFERENTIAL PULSE OSCILLATORS AND ARRAY THEREOF

• US 20100182065A1
• Filed: 01/13/2010
• Published: 07/22/2010
• Est. Priority Date: 01/21/2009
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: Hong, Seong Cheol, Sim, Sang Hoon
• Granted Patent: US 8,008,981 B2
• Time in Patent Office: Days
• US Class Current: 327/294
• CPC Class Codes: H03B 2200/0078 generating or using signals in quadrature
• CPC Class Codes: H03B 5/1212 the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
• CPC Class Codes: H03B 5/1228 the amplifier comprising one or more field effect transistors
• CPC Class Codes: H03B 5/1262 the means comprising switched elements
• CPC Class Codes: H04B 1/7174 Pulse generation in general H04L25/03834

Abstract

The present invention relates to a multi-phase ultra-wideband signal generator using differential pulse oscillators and an array thereof. The multi-phase ultra-wideband signal generator using differential pulse oscillators and an array thereof includes N pulse oscillators for generating pulse signals based on supply of power. The multi-phase ultra-wideband signal generator further comprises N inverting amplification units for outputting inverted amplified signals of output signals of the N pulse oscillators when a number of pulse oscillators is at least two, wherein, when the number of pulse oscillators is an even or odd number, the pulse oscillators are arrayed such that they have a connection form in which output terminals OUT(+) and OUT(−) of a relevant pulse oscillator are connected to output terminals OUT(+) and OUT(−) of a next pulse oscillator through a relevant inverting amplification unit, and the connection form is consecutively applied to the pulse oscillators.

Claims

1. A multi-phase ultra-wideband signal generator using differential pulse oscillators and an array thereof, comprising N pulse oscillators for generating pulse signals based on supply of power;

and

further comprising N inverting amplification units for respectively outputting inverted amplified signals of output signals of the N pulse oscillators when a number of pulse oscillators is at least two,

wherein, when the number of pulse oscillators is an even number, the pulse oscillators are arrayed such that they have a connection form in which output terminals OUT(+) and OUT(−

) of a relevant pulse oscillator are respectively connected to output terminals OUT(+) and OUT(−

) of a next pulse oscillator through a relevant inverting amplification unit, and the connection form is consecutively applied to the pulse oscillators ranging from a first pulse oscillator to a last pulse oscillator, and such that the output terminals OUT(+) and OUT(−

) of the last pulse oscillator are respectively connected to output terminals OUT (−

) and OUT(+) of the first pulse oscillator through a relevant inverting amplification unit, and wherein, when the number of pulse oscillators is an odd number greater than 1, the pulse oscillators are arrayed such that they have a connection form in which output terminals OUT(+) and OUT(−

) of a relevant pulse oscillator are respectively connected to output terminals OUT(+) and OUT(−

) of a next pulse oscillator through a relevant inverting amplification unit, and the connection form is consecutively applied to the pulse oscillators ranging from a first pulse oscillator to a last pulse oscillator, and such that the output terminals OUT(+) and OUT(−

) of the last pulse oscillator are respectively connected to output terminals OUT(+) and OUT(−

) of the first pulse oscillator through a relevant inverting amplification unit.

2. The multi-phase ultra-wideband signal generator according to claim 1, wherein each of the N pulse oscillators comprises:

an oscillator unit configured to include a resonator and a negative conductance generator and to generate a pulse signal based on supply of power; and

a first switch unit configured to control the power to be supplied to the oscillator unit,

wherein the oscillator unit comprises equivalent half circuits (left core and right core) around an actual or virtual AC ground, and has a structure in which two switches of the first switch unit respectively control power components to be supplied to the two equivalent half circuits.

3. The multi-phase ultra-wideband signal generator according to claim 2, wherein the two switches of the first switch unit asynchronously control the respective power components to be supplied to the equivalent half circuits.

4. The multi-phase ultra-wideband signal generator according to claim 2, wherein the two switches of the first switch unit interchange a control sequence of asynchronous control signals with each other so that Binary Phase Shift Keying (BPSK) modulation can be performed.

5. The multi-phase ultra-wideband signal generator according to claim 2, wherein the oscillator unit comprises a second switch unit disposed between the resonator and the negative conductance generator to bypass the resonator and configured to reduce a ringing component attributable to a switching operation or improve a response speed at the time of performing switching.

6. The multi-phase ultra-wideband signal generator according to claim 2, wherein the two switches of the first switch unit are active element switches or passive element switches.