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Circulator device with two magnet-free circulators

A circulator and equipment technology, applied in waveguide-type devices, impedance networks, electrical components, etc., can solve problems such as limiting insertion loss, and achieve the effects of reducing economies of scale, improving insertion loss, and reducing non-recursive engineering costs

Active Publication Date: 2018-12-21
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This power divergence behavior limits the achievable insertion loss for this type of circulator

Method used

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  • Circulator device with two magnet-free circulators
  • Circulator device with two magnet-free circulators
  • Circulator device with two magnet-free circulators

Examples

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Embodiment Construction

[0029] The inventive concepts will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the inventive concepts are shown. However, the inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and the present invention The scope of the concept is fully conveyed to those skilled in the art. Like numbers refer to like elements throughout the specification. Any steps or features indicated by dashed lines should be considered optional.

[0030] Figure 1a and 1b is a schematic diagram showing a radio transceiver device 100a, 100b according to an embodiment. The radio transceiver device 100a, 100b may be a radio access network node, such as a radio base station, base transceiver station, Node B or eNode B. Furthermore, the radio ...

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PUM

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Abstract

There is provided a circulator device (200a). The circulator device comprises two magnet-free circulators (220a,220b). Each magnet-free circulator has a forced time variance. The circulator device comprises ports (240a,240b,240c). The two circulators are in the circulator device arranged to have mutually anti-phase time variance. Each of the two circulators is coupled to all of the ports. There isalso presented an isolator device comprising such a circulator device. There is also presented a radio transceiver device comprising such a circulator device or isolator device.

Description

technical field [0001] The embodiments presented here relate to a circulator apparatus comprising two non-magnetic circulators. Background technique [0002] In general, circulators are non-reciprocal microwave devices. This means that the transmission of the circulator is much higher in one (forward) direction than in the other (reverse) direction. In more technical terms, forward transmission loss is called insertion loss, while reverse transmission loss is called isolation. Therefore, a circulator has the inherent property that its insertion loss is much smaller than its isolation. [0003] Most circulators have three ports (for brevity, port 1, port 2, and port 3). In such a circulator, if the forward transmission cycles through port 1, port 2, and port 3 in sequence, the reverse transmission will cycle through port 3, port 2, and port 1 in sequence, and vice versa. [0004] Circulators are widely used in radio frequency (RF) and microwave transceivers, such as in ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/38H01P1/36H03H7/52
CPCH01P1/36H03H7/52H04B1/0458H04B1/18H01P1/38H04B1/00H04B1/40
Inventor R·侯L·里德尔维尔塔宁
Owner TELEFON AB LM ERICSSON (PUBL)