Nonreciprocal circuit device and telecommunications apparatus including the same

A technology of circuit components and resistors, which is applied in the field of non-reversible circuit components, can solve the problems such as the resin film is easy to fall off, and achieve the effect of preventing the increase of insertion loss and improving the effect of short circuit
CN1574449AInactive Publication Date: 2005-02-02ALPS ALPINE CO LTD
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ALPS ALPINE CO LTD
Publication Date
2005-02-02
Estimated Expiration
Not applicable · inactive patent

Smart Images

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

Abstract

Provided is a non-reversible circuit element capable of preventing an increase in insertion loss as a non-reversible circuit element and miniaturizing the element as a whole, by applying a stable bias magnetic field to a magnetic substance. A nonreciprocal circuit device includes a box-like yoke consisting of upper and lower yokes. The yoke accommodates a magnetic assembly consisting of a magnetic body and first to third line conductors, chip capacitors connected to ends of the line conductors, and a magnet. The first and second line conductors are input and output terminals, and an end of the third line conductor is connected to a terminating chip resistor. The chip resistor is longitudinally disposed such that its long sides are substantially perpendicular to a line between ends of the input and output terminals. The end of the third line conductor is connected to a terminal electrode on the hot side of the terminating chip resistor. A terminal electrode on the earth side of the terminating chip resistor is directly connected to the lower yoke, and a notch is formed in the lower yoke under the hot side terminal electrode.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] technology area

[0002] The present invention relates to nonreciprocal circuit elements such as isolators used in communication devices such as mobile phones. Background technique

[0003] Figure 8 It is an exploded perspective view showing the structure of a conventional general isolator (non-reciprocal circuit element).

[0004] Figure 8 In the shown isolator 200, a disc-shaped permanent magnet 203, a magnetic assembly 205, and three matching chip capacitors C1 are sandwiched between a box-shaped upper yoke (上ヨ一ク) 202 and a lower yoke 208. , C2, C3 and a resin box 207 with a terminal chip resistor R. (Refer to Patent Documents 1 and 2)

[0005] The structure adopted by the magnetic assembly 205 is that a ferrite 254 is placed at the connecting portion of the central conductor having the same shape as the bottom surface of the disk-shaped ferrite 254, and the three central conductors 251 extended from the connecting portion, 252 and 253 are bent and wound at pred...

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