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DC isolated phase inverter and a ring hybrid coupler and the method

A technology of hybrid coupler and inverter, applied in the field of communication system

Inactive Publication Date: 2009-10-07
GLOBALFOUNDRIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although when using a common-mode biased differential amplifier that uses "ring waveguides" at its input and output as baluns, it is difficult to Favorable, but conventional inverter construction precludes this advantage due to the need to use blocking capacitors and supply resistors

Method used

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  • DC isolated phase inverter and a ring hybrid coupler and the method
  • DC isolated phase inverter and a ring hybrid coupler and the method
  • DC isolated phase inverter and a ring hybrid coupler and the method

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Embodiment Construction

[0037] Figure 2B A direct current (DC) isolated inverter 210 including a finite grounded coplanar waveguide (FGCPW) transmission line 250 is shown according to an exemplary embodiment of the present invention. Such as Figure 2B As shown in , DC isolated inverter 210 includes ground traces 220a-d that are interchanged with input signal trace 230a and inverter signal trace 230b. The DC isolating inverter 210 also includes capacitors 240a-d inserted in series in the ground traces 220a-d. The DC isolation inverter 210 can use coplanar waveguide, coplanar stripline, microstrip and slotline transmission lines instead of the FGCPW transmission line 250, all of which are capable of millimeter wave and microwave transmission.

[0038] image 3 is the layout of the DC isolated inverter 210 . Although the DC-isolated inverter 210 of FIG. 2 includes four capacitors 240a-d, for illustration purposes in image 3 Only two capacitors 240a, 240d are shown in . Such as image 3 shown, ...

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Abstract

Provided are a direct current (DC) isolated inverter and a ring hybrid coupler including the DC isolated inverter. The annular hybrid coupler comprising the DC isolating inverter comprises: first, second, third and fourth transmission line arms; a first port connected to the first arm, a second port connected to the second arm , connected to the third port of the third arm and connected to the fourth port of the fourth arm; and a DC inverter inserted into one of the first, second, third and fourth arms, wherein the The DC inverter includes: a transmission line including a plurality of signal traces and ground traces, wherein the plurality of signal traces and ground traces are interchanged; and a plurality of capacitors arranged in series with the ground traces, wherein the Capacitors isolate the DC inverter from devices connected to the transmission line.

Description

technical field [0001] The present invention relates to communication systems, and more particularly to millimeter wave transmission lines and hybrid couplers. Background technique [0002] One traditional building block used in high frequency circuits, such as radio frequency (RF) or millimeter wave circuits, is the ring hybrid or "rat-race" coupler. Ring hybrid or "ring waveguide" couplers are four-port devices used as power combiners or splitters in a variety of applications such as balanced amplification and mixing, differential clock or local oscillator signal generation, and power combining. Figure 1A A conventional four-port circular hybrid coupler 110 with a microstrip transmission line is shown in . [0003] Such as Figure 1A As shown in , the circumference of the ring hybrid coupler 110 is 6λ / 4, where λ is the wavelength that defines the center frequency of operation of the ring hybrid coupler 110 . Typically, the ring hybrid coupler 110 is designed to have an e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/22
CPCH01P5/222H01P5/185
Inventor B·A·弗洛伊德T·兹维克M·K·奇瑞拉
Owner GLOBALFOUNDRIES INC