Analog Turbo Decoder Implemented in SiGe BiCMOS Technology

A High-Speed Analog Turbo Decoder

A new type of iterative decoders based on analog computing networks, which are used to decode powerful error-correcting schemes, such as Turbo and Low-density parity-check (LDPC) codes, outperform their digital counterparts in terms of power consumption and speed. Only few analog Turbo decoders, all of them based on CMOS subthreshold technology have been implemented till now. This paper aims to...

SiGe Comes of Age

Since its first technology qualification in 1996 in IBM’s Advanced Semiconductor Technology Center (ASTC), Hopewell Junction, NY, silicon germanium (SiGe) has become the darling of the chip world, with new product and development agreement announcements made on nearly a daily basis. In this paper, we update progress made in SiGe since our 1Q97 IBM MicroNews article [1], tracing a number of busi...

Low-noise Circuitry for Extreme Environment Detection Systems Implemented in Sige Bicmos Technology

A 1-Tap 40-Gbps Look-ahead Decision Feedback Equalizer in 0.18μm SiGe BiCMOS Technology

This paper describes a fully-differential 1-Tap decision feedback equalizer (DFE) in 0.18μm SiGe BiCMOS technology. The circuit is capable of equalizing NRZ data up to 40 Gbps. A look-ahead architecture is used with modifications to reduce complexity in the high speed clock distribution. An analog differential voltage controls the tap weights. The design is fabricated in 0.18μm SiGe BiCMOS tech...

A 3-Bit 2.2V 3.08pJ/Conversion-Step 11GS/s Flash ADC in A 0.12μm SiGe BiCMOS Technology

A 3-bit ADC for X-band applications that can work at a sampling rate of 11 GS/s is presented in this paper. Current comparators are used to achieve the high sampling rate of 11 GHz at X-band. A 3-bit current-steering DAC is also designed for testing the high-speed ADC. The ADC-DAC RFIC is implemented in a 0.12 μm SiGe technology and occupies a core area of 1.0 x 0.8 mm. The ADC can operate with...