A low-spurious fast-hopping MB-OFDM UWB synthesizer

被引：0

作者：

Chen Danfeng ^{[1
]}

Li Wei ^{[1
]}

Li Ning ^{[1
]}

Ren Junyan ^{[1
,2
]}

机构：

[1] Fudan Univ, State Key Lab ASIC & Syst, Shanghai 201203, Peoples R China

[2] Fudan Univ, Micronanoelect Sci & Technol Innovat Platform, Shanghai 201203, Peoples R China

来源：

JOURNAL OF SEMICONDUCTORS | 2010年 / 31卷 / 06期

关键词：

frequency synthesizer; SSB mixer; VCO; PLL;

D O I：

10.1088/1674-4926/31/6/065003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A frequency synthesizer for the ultra-wide band (UWB) group #1 is proposed. The synthesizer uses a phaselocked loop (PLL) and single-sideband (SSB) mixers to generate the three center frequencies of the first band group by mixing 4224 MHz with +/- 264 MHz and 792 MHz, respectively. A novel multi-QSSB mixer is designed to combine the function of frequency selection and frequency conversion for low power and high linearity. The synthesizer is fabricated in Jazz 0.18-mu m RF CMOS technology. The measured reference spur is as low as -69 dBc and the maximum spur is the LO leakage of -32 dBc. A low phase noise of -110 dBc/Hz @ 1 MHz offset and an integrated phase noise of 1.86 degrees are achieved. The hopping time between different bands is less than 1.8 ns. The synthesizer consumes 30 mA from a 1.8 V supply.

引用

页数：5

共 10 条

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