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Proceedings ArticleDOI

A six-port direct digital millimeter wave receiver

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TLDR
In this paper, a six-port phase/frequency discriminator (SPFD) was proposed for direct demodulation of various digitally modulated signals at microwave/millimeter wave frequencies.
Abstract
A novel approach is proposed for direct demodulation of various digitally modulated signals at microwave/millimeter wave frequencies using a six-port phase/frequency discriminator (SPFD). The proposed six-port direct digital receiver is capable of handling PSK and QAM as well as their varieties. Preliminary measurements on demodulation of DBPSK signals at 26.5 GHz, 33 GHz and 40 GHz have revealed great potential of this new receiver. >

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Citations
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Journal ArticleDOI

The Six-Port in Modern Society

TL;DR: The six-port concept is based on the additive superposition of the two RF input signals using four different relative phases leading to constructive or destructive interaction, and the resulting signals are directly downconverted to baseband by diode circuits operated in detector or mixing mode.
Journal ArticleDOI

Dual-tone calibration of six-port junction and its application to the six-port direct digital millimetric receiver

TL;DR: In this article, a dual-tone calibration of a six-port direct digital MM-wave receiver using two carriers with closely spaced frequencies is described. But the calibration procedure is fully automatic and can be implemented in a system capable of capturing the output waveforms of a 6-port.
Journal ArticleDOI

Six-Port Based Interferometry for Precise Radar and Sensing Applications.

TL;DR: It will be shown that in application fields, like remote distance sensing, precise alignment measurements, as well as interferometrically-evaluated mechanical strain analysis, the six-port architecture delivers extraordinary measurement results combined with high measurement data update rates for reasonable system costs, making it a promising candidate for industrial metrology.
Journal ArticleDOI

Configurable RF receiver architectures

TL;DR: This article compares two very promising solutions (sampling and six-port) with respect to their suitability in the millimeter-wave range and to discuss some related research aspects.
Journal ArticleDOI

New-Wave Radio

TL;DR: In this article, the initial results obtained with new radios using linear interferometers to modulate and demodulate ultra-wide-band (UWB) signals are presented.
References
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Journal ArticleDOI

Using an Arbitrary Six-Port Junction to Measure Complex Voltage Ratios

TL;DR: In this paper, an arbitrary six-port junction is analyzed as a microwave vector voltmeter, measuring the amplitudes and phase differences of two input signals in terms of power readings taken at the remaining four ports.
Proceedings ArticleDOI

A collision avoidance radar using six-port phase/frequency discriminator (SPFD)

TL;DR: In this article, a new six-port microwave/millimeter wave digital phase/frequency discriminator (SPFD) is used to measure Doppler frequency shifts for collision avoidance radar.
Proceedings ArticleDOI

Using an Arbitrary Six-Port Junction to Measure Complex Voltage Ratios

C.A. Hoer, +1 more
TL;DR: In this article, an arbitrary six-port junction is analyzed as a microwave vector voltmeter, measuring the amplitudes and phase difference of two input signals in terms of power readings taken at the remaining four ports.
Proceedings ArticleDOI

A new incoherent direct conversion receiver

TL;DR: A novel type of noncoherent homodyne receiver designed for low-cost mobile communication applications in the upper UHF area that operates on digital angle-modulated signals at high data rates in GMSK and in most other two- and four-state modulation schemes of the proposed European DECT-standard.
Proceedings ArticleDOI

Performance of a direct conversion receiver with pi /4-DQPSK modulated signal

TL;DR: Imperfections in the receiver front end as well as degradations due to spurious signals are studied and Signal-to-noise penalty curves for four specific imperfections are presented and possible solutions are recommended to minimize their effects.
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