A 4-bit ultra-wideband beamformer with 4ps true time delay resolution

被引：0

作者：

Roderick, JD ^{[1
]}

Krishnaswamy, H ^{[1
]}

Newton, K ^{[1
]}

Hashemi, H ^{[1
]}

机构：

[1] Univ So Calif, Dept Elect Engn Electrophys, Los Angeles, CA 90089 USA

来源：

CICC: PROCEEDINGS OF THE IEEE 2005 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2005年

关键词：

microwave antenna arrays; beam steering; delay circuits; BiCMOS integrated circuits;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper documents an ultra-wideband (UWB) fully integrated beamformer which features controllable true time delay and power gain. The UWB beamformer accomplishes 4-bit delay variation with 4ps resolution, 5dB gain variation in 1dB steps, and a -3dB gain bandwidth of 11.2GHz. Overall operation is achieved by the integration of a three-bit tapped delay trombone-type structure with 4ps variable delay resolution, a one-bit 32ps fixed delay coplanar-type structure, and a variable gain distributed amplifier. The prototype chip fabricated in a 0.18 mu m BiCMOS SiGe process occupies 1.6mm(2) of silicon area and consumes 125mW from a 2.5V supply at the maximum gain setting of 14.2dB.

引用

页码：805 / 808

页数：4

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