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Non-coherent six-port receiver

A receiver and phase technology, applied in phase modulation carrier system, amplitude modulation oscillation demodulation, digital transmission system and other directions, which can solve the problems that cannot be integrated in one chip, and the 6-port receiver is complicated.

Inactive Publication Date: 2004-01-21
SONY INT (EURO) GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However there is the problem that the known 6-port receiver is rather complex and in particular cannot be integrated on one chip due to the presence of the local oscillator 18

Method used

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  • Non-coherent six-port receiver
  • Non-coherent six-port receiver
  • Non-coherent six-port receiver

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Embodiment Construction

[0038] The present invention is accomplished under the impetus of the following points:

[0039] - The present invention provides direct conversion (homodyne) systems that also work in direct conversion of millimeter waves and in conversion to baseband;

[0040] - the front end can be realized with passive components which are not ideal due to manufacturing tolerances;

[0041] - The invention essentially cancels the classical I / Q circuits and thus avoids their amplitude / phase imbalance;

[0042] - The invention allows the utilization of the very low power levels of the RF local oscillator;

[0043] - the receiver's hardware accommodates many possible different modulation techniques with different baseband channel bandwidths;

[0044] - The invention provides an inherently inexpensive concept characterized by high integration capabilities and low cost processes. The entire RF front end is ideally placed on one chip,

[0045] - The receiver supports a global strategy to red...

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Abstract

The present invention relates to a method and a receiver for high-frequency signals. The receiver comprises a power divider(4)to divide a modulated RF input signal in at least two branches. At least one delay line(5, 6)is provides for a delay of the branches relatively to each other by a predetermined delay constant. A calculation circuit(7, 8)calculates at least three power levels based on combinations(12, 13, 14)of the two branches of the input signal relatively delayed(5, 6)to each other. A processing means(10)calculates the phase and the amplitude of a complex signal representing the relation between the two branches of the input signal relatively delayed to each other, on the basis of the said at least three power levels(8). The invention therefore provides for a direct 6-port receiver based on non-coherent detection. The concept of the invention is inherently cheap and features high integration ability and low-cost processes. Ideally the whole RF front end can be placed on one chip.

Description

technical field [0001] The present invention relates to a method and a receiver for receiving and demodulating high frequency signals by direct conversion. The present application also relates to a mobile communication device and a cellular telephone comprising such a receiver. Background technique [0002] It has recently been revealed that a so-called 6-port receiving phone together with a digital signal processor can directly perform digital demodulation in the frequency range from microwave to millimeter wave band. This new direct digital receiver promises reduced receiver complexity, low manufacturing requirements and good performance in providing a cost-effective alternative to conventional heterodyne architectures used in various digital terminals. [0003] The most widely used modulation method in digital communication systems such as satellite and personal communication systems is PSK (Phase Shift Keying). There are two types of demodulation techniques: coherent a...

Claims

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Application Information

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IPC IPC(8): H04L27/38H03D1/22H04B1/26H04B1/30H04B7/26H04L27/22H04L27/233
CPCH04B1/30H04L27/2331H03D1/2245H04L27/00
Inventor V·布兰科维奇
Owner SONY INT (EURO) GMBH
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