Highly Efficient Front End Direct Conversion Receiver for 28-GHz Wireless Access Point

Akbari, Mohammad; Farahani, Mohammad Reza; Ardakani, Mansoor Dashti; Lalbakhsh, Ali; Zarbakhsh, Saman; Tatu, Serioja Ovidiu; Sebak, Abdel-Razik; Ramahi, Omar M.; Denidni, Tayeb A.

doi:10.1109/access.2021.3089582

Cited by 11 publications

(2 citation statements)

References 35 publications

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“…Due to the need to customize the special multiplier chip, the cost and difficulty of the analog correlator, which uses direct multiplication technology, to achieve broadband is relatively high [23]. By comparison, the analog correlator using add-and-square technology is generally based on the six-port technique [24]; due to its low cost and ease in achieving large bandwidth, the six-port technique is widely used in the fields of reflectometers [25][26][27], receivers [28][29][30], correlators [31,32], and so on. Therefore, the add-and-square analog complex correlator makes it easier to achieve large bandwidth, and the sensitivity of a correlation radiometer is inversely proportional to the root of the bandwidth [21], which also means that the radiometer can achieve higher temperature sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact Analog Complex Correlator for Millimeter-Wave Radiation Temperature Measurement System

Dong

et al. 2023

Micromachines

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Human body temperature is a fundamental physiological sign that reflects the state of physical health. It is important to achieve high-accuracy detection for non-contact human body temperature measurement. In this article, a Ka band (32 to 36 GHz) analog complex correlator using the integrated six-port chip is proposed, and a millimeter-wave thermometer system based on the designed correlator is completed for human body temperature measurement. The designed correlator utilizes the six-port technique to achieve large bandwidth and high sensitivity, and miniaturization of the correlator is achieved through an integrated six-port chip. By performing the single-frequency test and the broadband noise measurement on the correlator, we can determine that the dynamic range of input power of the correlator is −70 dBm to −35 dBm, and the correlation efficiency and equivalent bandwidth are 92.5% and 3.42 GHz, respectively. Moreover, the output of the correlator varies linearly with the input noise power, which reveals that the designed correlator is suitable for the field of human body temperature measurement. Then, a handheld thermometer system, with a size of 140 mm × 47 mm × 20 mm, is proposed using the designed correlator, and the measurement results show that the temperature sensitivity of the thermometer is less than 0.2 K.

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Section: Introductionmentioning

confidence: 99%

Design of a Compact Analog Complex Correlator for Millimeter-Wave Radiation Temperature Measurement System

Dong

et al. 2023

Micromachines

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“…Power dividers have many applications in telecommunication systems, such as power amplifiers and array antennas [1][2][3]. The Wilkinson power divider is a popular component in radio frequency and microwave circuits, and it has a critical role in several technologies, systems, and configurations, such as array antenna feeding networks [4][5][6], multi-port technologies/sensors [7][8][9], and non-reciprocal systems [10][11][12]. Dual-band Wilkinson power dividers have been developed using different ways in recent years, along with the introduction of the multiband wireless communication system [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Novel Planar Power Divider/Combiner for Wideband High-Power Applications

Tadayon

Ardakani

Karimian

et al. 2022

Eng

Self Cite

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This manuscript presents a novel wideband power divider with high power handling capability. The power handling capacity of the power divider is increased through the use of grounded 50 ohm loads. The full circuit analysis of a single section of the proposed structure is presented utilizing even and odd modes and ABCD matrices. The final designed sections are cascaded and extended to achieve a high bandwidth response for the target of X-band. The structure was designed and optimized with the method of moments based on ADS software and simulated in HFSS for 3D full-wave analysis. A prototype module was fabricated and measured for experimental validation. The simulation results were confirmed by through measurements for the frequency band of 7–12 GHz (more than 52% fractional bandwidth). A divider such as the proposed one has a significantly higher power handling capacity than Wilkinson, as well as a wider frequency bandwidth than Gysel power dividers. As a wideband high-power power divider, the proposed device is ideal for high-data rate radar or satellite applications.

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V-Band Six-Port Interferometer Receiver: High Data-Rate Wireless Applications, BER and EVM Analysis, and CFO Compensation

Ardakani

Tatu

2021

IEEE Access

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The realization and analysis of an implemented V-band six-port demodulator, operating over 60 GHz band, are presented in this paper. The performance of the design in real-time high-data-rate wireless data transmission is strongly proved using different modulated signals. The valid high data-rate demodulation results achieved over a 7 GHz band (from 57 to 64 GHz), provide a confirmation that this six-port interferometer receiver is an attractive proposition for homodyne or heterodyne transceivers designed for high-speed short-range wireless communication systems, such as future wireless small cell backhaul for 5G. The performance of the proposed direct conversion receiver is characterized in terms of the bit error rate (BER) and error vector magnitude (EVM) for various M-PSK/M-QAM demodulated signals. To verify the resulting data, the relation between the error vector magnitude and the bit error rate is also analyzed. Theoretical results are matched to measured values and validate that the EVM and BER are appropriate metrics for mm-wave channels limited by additive white Gaussian noise. In the last section, the proposed six-port interferometer is introduced for precise estimation of carrier frequency offset (CFO) and Doppler shift in V-band wireless systems. The final results, which include various modulation configurations at mega or Giga symbol rates generated by the implemented transmitter, are supported by laboratory measurements.INDEX TERMS Bit error rate, carrier frequency offset, direct conversion receiver, fifth-generation (5G) systems, error vector magnitude, multiport interferometer, six-port junction.

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Highly Efficient Front End Direct Conversion Receiver for 28-GHz Wireless Access Point

Cited by 11 publications

References 35 publications

Design of a Compact Analog Complex Correlator for Millimeter-Wave Radiation Temperature Measurement System

Design of a Compact Analog Complex Correlator for Millimeter-Wave Radiation Temperature Measurement System

A Novel Planar Power Divider/Combiner for Wideband High-Power Applications

V-Band Six-Port Interferometer Receiver: High Data-Rate Wireless Applications, BER and EVM Analysis, and CFO Compensation

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