Non-reciprocal circuit element

A technology of circuit components and inductance components, applied in the field of non-reversible circuit components, can solve problems such as cracks, lower product yields, and cracks in laminated substrates
CN1993858AActive Publication Date: 2007-07-04PROTERIAL LTD
1 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
PROTERIAL LTD
Publication Date
2007-07-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A non-reciprocal circuit element comprising a first inductance element connected between a first input / output port and a second input / output port; a second inductance element connected between the second input / output port and a grounded point; a first capacitance element connected between the first input / output port and the second input / output port for constituting a parallel resonant circuit along with the first inductance element; a second capacitance element connected between the second input / output port and a grounded point for constituting a parallel resonant circuit along with the second inductance element; and a resistance element connected between the first input / output port and the second input / output port; wherein the first capacitance element and / or the second capacitance element comprises a parallel connection of a capacitor, which is formed by an electrode pattern in a layer-built board comprising a dielectric and the electrode pattern, and a chip capacitor mounted on the layer-built board.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a non-reciprocal circuit element having non-reciprocal transmission characteristics for high-frequency signals, and more particularly to a non-reciprocal circuit element generally called an isolator used in mobile communication systems such as mobile phones. Background technique

[0002] Nonreciprocal circuit elements such as isolators are widely used in mobile communication equipment using a frequency band of several hundreds of MHz to several tens of GHz, that is, base stations of PHS (Personal Handyphones), mobile phone terminals, and the like. For example, in a transmission section of a mobile communication device, an isolator is disposed between a power amplifier and an antenna to prevent backflow of unnecessary signals to the power amplifier and to stabilize the load-side impedance of the power amplifier. Therefore, isolators are required to be excellent in insertion loss characteristics, reflection loss character...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More