1024-QAM High Image Rejection $E$-Band Sub-Harmonic IQ Modulator and Transmitter in 65-nm CMOS Process

Lin, Wen-Chin; Yang, Hao-Jan; Tsai, Jeng-Han; Huang, Tian-Wei; Wang, Huei

doi:10.1109/tmtt.2013.2284473

Cited by 51 publications

(26 citation statements)

References 17 publications

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“…The IRR formula derived in [2] only considers the amplitude and phase errors at the LO port and assumes perfect IF amplitude and phase balance, as shown in Fig. 3(a).…”

Section: Ppf Designmentioning

confidence: 99%

“…In this satellite system, the operating frequency range of the adopted modem (ViaSat ELiTE-S2) is from 0.95 to 2.15 GHz [9]. For IRR above 30 dBc, the amplitude and phase errors should be restricted within ±0.2 dB and ±1° according to [2]. Based on the constant phase behavior [29] of the adopted PPF, Fig.…”

Section: Comparison Of Irr Bandwidths (Irr>30dbc) At If Frequencies (mentioning

confidence: 99%

“…However, under the process variation and device mismatch, the quadrature generation causes load variation of the mixer core which then leads to IQ mismatch. In [2], load insensitive analysis indicates that the load variation at the LO port causes less IQ mismatch than at the RF port, and thus the quadrature generation is adopted at LO port and not at the RF port in our design, as illustrated in Fig. 8.…”

Section: Comparison Of Irr Bandwidths (Irr>30dbc) At If Frequencies (mentioning

confidence: 99%

“…The image rejection ratio (IRR) is defined as the ratio of the average power of the desired signal to the average power of the image signal. Having the IRR be above 30 dBc is enough to provide an acceptable system performance [2]. Thus, the IRR bandwidths can be specified for IRR above 30 dBc.…”

Section: Introductionmentioning

confidence: 99%

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Ka-Band Calibration-Free High Image-Rejection Up/Down Mixers With 117% Fractional IF Bandwidth for SATCOM Applications

Tsai

Huang

2020

IEEE Access

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This paper presents two Ka-band calibration-free up/down mixers, each with high image rejection ratio (IRR) for a wide band of IF frequencies covering the satellite modem frequency range (0.95-2.15 GHz). To achieve broadband IRR>30 dBc, a 3-stage castle-wall polyphase filter (PPF) is used at the IF port to minimize the amplitude and phase errors (AM<±0.2 dB, PM<±1°). For local oscillator (LO) quadrature generation, a four-way quadrature divider composed of two broadside 90° couplers and one Marchand balun is used. The single-sideband (SSB) up mixer shows a 4.2-dB conversion gain (CG) with LO power of 4 dBm and an output 1-dB gain compression (OP 1dB) of-4.3 dBm. The image-rejection (IR) down mixer achieves a-11.6-dB CG under LO power of 5.5 dBm and an input 1-dB gain compression (IP 1dB) of 0 dBm. With a 1.2-V supply voltage, the SSB up mixer and IR down mixer consume 15.6 mW and 12 mW, respectively. The SSB up mixer and IR down mixer demonstrate broad IRR bandwidths at the IF frequencies (IRR>30 dBc) from 0.6 to 4 GHz (148% fractional IF bandwidth) and from 0.65 to 2.5 GHz (117%), respectively, with no calibration. In addition, the RF bandwidths (IRR>30 dBc) of the SSB up mixer is 27.7-33.3 GHz (18.36% fractional RF bandwidth), and the IR down mixer is 17.1-20.6 GHz (18.5%). The IRR performances are robust against process, voltage, and temperature (PVT) variations and Monte Carlo simulations for satellite communication (SATCOM) applications.

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“…The IRR formula derived in [2] only considers the amplitude and phase errors at the LO port and assumes perfect IF amplitude and phase balance, as shown in Fig. 3(a).…”

Section: Ppf Designmentioning

confidence: 99%

Section: Comparison Of Irr Bandwidths (Irr>30dbc) At If Frequencies (mentioning

confidence: 99%

Section: Comparison Of Irr Bandwidths (Irr>30dbc) At If Frequencies (mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ka-Band Calibration-Free High Image-Rejection Up/Down Mixers With 117% Fractional IF Bandwidth for SATCOM Applications

Tsai

Huang

2020

IEEE Access

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“…However, the IQ mismatch can be reduced by proper selection of the circuit topology. Likewise, power back-off can be leveraged the linearity constrain [146].…”

Section: Modulatorsmentioning

confidence: 99%

Advances in Silicon Based Millimeter-Wave Monolithic Integrated Circuits

et al. 2014

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Abstract:In this paper, the advances of the silicon-based millimeter-wave (MMW) monolithic integrated circuits (MMICs) are reported. The silicon-based technologies for MMW MMICs are briefly introduced. In addition, the current status of the MMW MMICs is surveyed and novel circuit topologies are summarized. Some representative MMW MMICs are illustrated as design examples in the categories of their functions in a MMW system. Finally, there is a conclusion and description of the future trend of the development of the MMW ICs.

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