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Nuevo amplificador de carga con bajo nivel de ruido

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOUK20131216001
Publicado:
02/01/2015
Caducidad:
06/03/2015
Resumen:
Un centro de investigación británico ha desarrollado un nuevo bloque de ganancia para preamplificadores de carga que se emplean para ofrecer señales con bajos niveles de ruido en sistemas sensibles, como detectores de partículas ionizantes y detectores de radiación gamma y X. Las principales ventajas de este desarrollo incluyen bajo consumo de energía, funcionamiento optimizado con bajo nivel de ruido, mejor respuesta al impulso y mejores características de forma. Se buscan socios interesados en establecer acuerdos de licencia.

Details

Tittle:
Novel Low Noise Charge Amplifier
Summary:
A North West UK research organization has created a gain block for shaping charge pre-amplifiers which are used to provide low noise input stages for sensitive systems such as particle detectors, which typically are used to detect ionizing articles, and gamma/x-rays. The main advantages of this development are reduced power consumption, optimized low noise operation, improved pulse purity and a desired shaping characteristic. The developer offers this technology in a license agreement.
Description:
Researchers at a North West UK research organization have developed a charge amplifier comprising input and output terminals connected to a gain block. A small-value capacitor, typically 1 pF (picoFarad), and parallel-connected high-value resistor, typically 1000 Mω (megaOhm), form the feedback components connecting the output terminal to the input terminal.The high value resistor is connected in parallel with the capacitor to provide a discharge path for the charge. Charge that is flowing into the input flows into the feedback capacitor, resulting in a voltage signal at the output. Typically, a charge of 104 electrons gives 1.6 mV (milliVolts) into 1 pF. Because the charge amplifier integrates the total signal flowing into its input it can achieve higher signal to noise ratios than comparable voltage or current configurations.To construct a charge amplifier the basic gain block has an extremely high input impedance and low input bias current. It must also be very fast. This requirement has usually been met by using a discrete component front end. Junction field-effect transistors (JFETs) have been the input device of choice since their introduction in the 1900's. The gain block comprises an input source follower based on a JFET followed by a current feedback amplifier.
There are many applications for this type of technology in sensitive systems and instrumentation such as particle detectors and it is envisaged that this technology will become a new building block in the electronics field.
This patented technology is now offered under license to partners who familiar with this type of technology production to bring to market.
Advantages and Innovations:
The Innovations are:
A gain block with an input and output terminal. The gain block comprises a non-inverting input stage with extremely high impedance and a current feedback amplifier whose inverting input is connected to the output of the input stage and whose output is connected to the output terminal.

The advantages are:
Reduced power consumption (compared to a charge amplifier built conventionally).
Optimum low noise operation is achieved by passing the output of the front end through a band pass filter to shape the overall response in an optimal way for a particular application.
There is and improved pulse purity over the conventional circuit, giving a better leading edge with little if any overshoot and a shorter rise time.
Provides a desired shaping characteristic to an input signal.
Stage of Development:
Available for demonstration
IPs:
Patents granted
CommeR Statunts Regarding IPR Status:
UK patents granted

Partner sought

Type and Role of Partner Sought:
The ideal partner would be a producer of electronic component devices whose role would be to develope into a product and bring to market.

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English

Keywords

Technology Keywords:
01002001 Micro y nanotecnología relacionada con electrónica y microelectrónica