A digital-to-RF-amplitude converter for GSM/GPRS/EDGE in 90-nm digital CMOS

Cruise, P.; Hung, Chih‐Ming; Staszewski, Robert Bogdan; Eliezer, Oren; Rezeq, S.; Maggio, K.; Leipold, Dirk

doi:10.1109/rfic.2005.1489176

Cited by 75 publications

(34 citation statements)

References 6 publications

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“…Moreover, RZ mixing usually results in a large common mode signal at the output, which makes interfacing with other RF components troublesome. RZ mixing is inherent to singleended mixing [2,5,23], see Sect. 6.1.…”

Section: Amplitude-polaritymentioning

confidence: 99%

See 1 more Smart Citation

Classification for synthesis of high spectral purity current-steering mixing-DAC architectures

Bechthum

Radulov

Briaire³

et al. 2015

Analog Integr Circ Sig Process

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This paper proposes a classification of Mixing-DAC architectures, focusing on spectral purity. Based on literature research, analysis and simulations, the proposed classification shows the impact of architectural choices on the output spectral purity. To concretize the classification and validate the analysis, a number of specific Mixing-DAC architectures are synthesized, discussed and simulated. Given the proposed classification, a set of optimal architectural choices lead to a strong architecture candidate for achieving high spectral purity at high signal frequencies, i.e. SFDR [ 80 dBc at f OUT = 4 GHz for current and future multicarrier GSM applications. The main characteristics of this architecture are: Cartesian signaling, local Gilbert-cell mixing and a fully differential implementation.

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Section: Amplitude-polaritymentioning

confidence: 99%

“…For the BB signal however, there is no advantage in using RZ signaling instead of SaZ signaling. RZ is only used when the architecture does not allow SaZ signaling because the chosen architecture is completely single ended [23].…”

Section: Amplitude-polaritymentioning

confidence: 99%

Classification for synthesis of high spectral purity current-steering mixing-DAC architectures

Bechthum

Radulov

Briaire³

et al. 2015

Analog Integr Circ Sig Process

View full text Add to dashboard Cite

show abstract

“…In order to increase the amplifier's overall power output and to digitally control it, one replaces the single NMOS switch with a parallel NMOS configuration [8]. Figure 1 shows the parallel NMOS switches (we use minimum size W/L).…”

Section: Building Blocks a Power Amplifiermentioning

confidence: 99%

Integrated magnetic array for bio-object sensing and manipulation

Faisal

Fathi

2010

2010 Biomedical Circuits and Systems Conference (BioCAS)

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Abstract-Magnetic molecular-level interrogation, manipulation, and diagnosis are emerging as lab-on-chip platforms. These platforms entail low-cost, low-power, portable, and high efficiency integrated implementations. We introduce an all-integrated programmable 16x16 magnetic coil array chip for sensing and actuating small single bio-objects or collaboratively manipulating larger ones. The die-size is 1.5x1.5mm2 designed in bulk 0.5µm CMOS technology. The integrated design does not require any external magnetic source. It relies on the Hall effect generated by the smallest permissible vertical coil inductors (in this reported technology, the smallest inductor's planar area is 6µmx6µm). The coil array is selectively and dynamically controlled. Each cell, composed of the coil and its logical control circuitry, can detect small objects in the order of 1µm diameter as well as emit eight programmable magnetic field levels for manipulation. All array sensing and driving components are shared to reduce the overall imprint. Also, they are tuned to work at 900MHz incorporating high-speed serial row/column switching for seamless pseudoparallel operation.

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“…To understand the effectiveness of the segmented power generation and the overlapping technique more clearly, EVM of an ideal OFDM signal is calculated using the following equation: (9) where is the probability density function of an OFDM signal in amplitude, and and are the amplitude of the IMD3 product and desired signal, respectively. See (10) at the bottom of the page.…”

Section: B Segmented Power Generationmentioning

confidence: 99%

“…Although an envelope tracking (ET) technique can solve the problem of output power range, it still requires a DC-DC converter and it has low peak efficiency as it generally uses class-AB power amplifiers [18], [19]. At lower power levels, digitally modulated polar PAs [9]- [11] have been shown as a possible solution to render the DC-DC converter. However, it still has the problem of output power range, and out-of-band emission due to aliasing and quantization noise should be taken care of.…”

mentioning

confidence: 99%