國立高雄大學圖資館 |

登入

回首頁

A wideband, time-interleaved CMOS A/D converter using photoconductive sampling switches

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A wideband, time-interleaved CMOS A/D converter using photoconductive sampling switches
作者:	Nathawad, Lalitkumar Y.
面頁冊數:	158 p.
附註:	Adviser: Bruce A. Wooley.
附註:	Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 2017.
Contained By:	Dissertation Abstracts International65-04B.
標題:	Engineering, Electronics and Electrical.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3128675
ISBN:	049675937X

A wideband, time-interleaved CMOS A/D converter using photoconductive sampling switches
Nathawad, Lalitkumar Y.

A wideband, time-interleaved CMOS A/D converter using photoconductive sampling switches [electronic resource] - 158 p.

Adviser: Bruce A. Wooley.

Thesis (Ph.D.)--Stanford University, 2004.

High-speed analog-to-digital (A/D) conversion of signals with bandwidths of several tens of gigahertz would enable a number of digital signal processing applications in fiber-optic communications, wideband radar and high-speed instrumentation. However, current electronic A/D converter technology is at best capable of 4 to 8 effective bits of resolution for signal bandwidths as high as a few GHz. A number of optical sampling techniques have been proposed to provide much higher input bandwidths while taking advantage of low-jitter mode-locked laser sources to improve resolution. However, most of these techniques have been difficult to integrate with conventional electronic A/D converters.

ISBN: 049675937XSubjects--Topical Terms:

226981
Engineering, Electronics and Electrical.

A wideband, time-interleaved CMOS A/D converter using photoconductive sampling switches
LDR:03473nmm _2200301 _450 001 162648
005 20051017073508.5
008 230606s2004 eng d
020 $a 049675937X
035 $a 00149149
035 $a 162648
040 $a UnM $c UnM
100 0 $a Nathawad, Lalitkumar Y. $3 227792
245 1 2 $a A wideband, time-interleaved CMOS A/D converter using photoconductive sampling switches $h [electronic resource]
300 $a 158 p.
500 $a Adviser: Bruce A. Wooley.
500 $a Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 2017.
502 $a Thesis (Ph.D.)--Stanford University, 2004.
520 # $a High-speed analog-to-digital (A/D) conversion of signals with bandwidths of several tens of gigahertz would enable a number of digital signal processing applications in fiber-optic communications, wideband radar and high-speed instrumentation. However, current electronic A/D converter technology is at best capable of 4 to 8 effective bits of resolution for signal bandwidths as high as a few GHz. A number of optical sampling techniques have been proposed to provide much higher input bandwidths while taking advantage of low-jitter mode-locked laser sources to improve resolution. However, most of these techniques have been difficult to integrate with conventional electronic A/D converters.
520 # $a Measurement results are presented for an experimental 2-channel, 4-bit photoconductive-sampling A/D converter fabricated in a 0.25-mum CMOS technology with flip-chip bonded LT-grown GaAs switches. The prototype provides about 3.5 effective bits of resolution for input frequencies up to 40 GHz, with an estimated sampling jitter of less than 80 fs. Each channel dissipates 70 mW of power at a 640-MHz conversion rate and occupies an active area of 150 mum by 450 mum.
520 # $a The design of the 4-bit CMOS A/D converters used to digitize the sampled signals is constrained by the need for a very low input capacitance and a small area, the latter necessary to allow the integration of many converters in a single chip to maximize the aggregate sampling rate. The A/D converters each consist of a linearized open-loop buffer amplifier followed by a 4-bit flash quantizer. Dynamic averaging of offsets in the flash quantizer relaxes transistor matching requirements, thus reducing the circuit area. The use of optically-triggered sampling and time-interleaving relaxes the jitter, timing skew and conversion rate requirements of the CMOS A/D converters.
520 # $a This work introduces a parallel A/D conversion architecture wherein a large number of time-interleaved channels each combine photonic sampling with a 4-bit, 800-MSample/s CMOS A/D converter. Each channel samples the electrical input signal using ultrafast photoconductive switches that are fabricated in low-temperature-grown (LT-grown) GaAs and flip-chip bonded onto a CMOS integrated circuit chip. When optically-triggered with a short-pulse laser, the photoconductive switches provide sampling apertures of a few picoseconds with about 6 bits of linearity, but they have limited drive capability.
590 $a School code: 0212.
650 # 0 $a Engineering, Electronics and Electrical. $3 226981
690 $a 0544
710 0 # $a Stanford University. $3 212607
773 0 # $g 65-04B. $t Dissertation Abstracts International
790 $a 0212
790 1 0 $a Wooley, Bruce A., $e advisor
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://libsw.nuk.edu.tw/login?url=http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3128675 $z http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3128675