EP0910876B1 - Filtre monolithique - Google Patents

Filtre monolithique Download PDF

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Publication number
EP0910876B1
EP0910876B1 EP97931679A EP97931679A EP0910876B1 EP 0910876 B1 EP0910876 B1 EP 0910876B1 EP 97931679 A EP97931679 A EP 97931679A EP 97931679 A EP97931679 A EP 97931679A EP 0910876 B1 EP0910876 B1 EP 0910876B1
Authority
EP
European Patent Office
Prior art keywords
metallization
filter
ceramic body
ground connection
monolithic filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97931679A
Other languages
German (de)
English (en)
Other versions
EP0910876A1 (fr
Inventor
Christian Block
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Electronics AG
Original Assignee
Siemens Matsushita Components GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Matsushita Components GmbH and Co KG filed Critical Siemens Matsushita Components GmbH and Co KG
Publication of EP0910876A1 publication Critical patent/EP0910876A1/fr
Application granted granted Critical
Publication of EP0910876B1 publication Critical patent/EP0910876B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block

Definitions

  • the invention relates to a monolithic filter, in particular Microwave filter, which consists of a ceramic body, in the holes are arranged from one side to the opposite side, where the surface of the Ceramic body with the exception of one side a metallization possesses, the connection surfaces insulated from the metallization for capacitive coupling / decoupling of RF signals, and in which a ground connection is arranged between the connection surfaces is.
  • a monolithic filter in particular Microwave filter, which consists of a ceramic body, in the holes are arranged from one side to the opposite side, where the surface of the Ceramic body with the exception of one side a metallization possesses, the connection surfaces insulated from the metallization for capacitive coupling / decoupling of RF signals, and in which a ground connection is arranged between the connection surfaces is.
  • Such a filter is known from US 5,162,760.
  • ground connection located between the pads is used to reduce or avoid crosstalk.
  • this ground connection is with the outer metallization galvanically connected.
  • the object of the present invention is to provide a filter Specify the type mentioned, in which these difficulties cannot occur during soldering.
  • This configuration has the advantage that the Quantity of solder of the ground connection arranged between the HF connections can't run away.
  • the object of the invention is based on an embodiment explained in more detail.
  • a microwave ceramic filter 1 shown which consists of a ceramic body 2 exists, arranged in the through holes 3, 4 are from one side 5 to the opposite side 6 to lead.
  • All outer surfaces of the ceramic body 2 with the exception of the surface 6 are provided with a metallization 7.
  • the inside the holes 3, 4 is also with a metallization provided so that coaxial resonators are formed.
  • insulated pads 8, 9 On the surface shown in the figure as the top are over the through holes 3, 4 from the rest of the metallization 7 insulated pads 8, 9 arranged for capacitive Serve in or out of RF signals. Between the connection surfaces 8, 9 there is a ground connection 10, that according to the invention also from the rest of the metallization 7 is separated.
  • connection surfaces 8, 9, 10 are produced by that this from the originally continuous metallization 7 etching or mechanical by grinding the surrounding metallization. Because the insulation of the ground connection 10 simultaneously with the manufacture the HF pads 8, 9 takes place, there is no additional effort.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Claims (1)

  1. Filtre monolithique (1), en particulier filtre pour micro-ondes, constitué d'un corps en céramique (2) à ouvertures traversantes (3, 4) d'un côté (5) à un côté opposé (6), sur lequel les surfaces extérieures du corps en céramique (2), à l'exception d'un côté (6), sont revêtues d'une métallisation (7), qui comporte des surfaces de raccordement (8, 9) isolées de la métallisation (7) pour le couplage et le découplage capacitifs de signaux HF et sur lequel un raccordement de masse (10) est ménagé entre les surfaces de raccordement (8, 9)
    caractérisé par le fait
    que le raccordement de masse (10) est isolé de la métallisation (7).
EP97931679A 1996-07-11 1997-06-27 Filtre monolithique Expired - Lifetime EP0910876B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19628023 1996-07-11
DE19628023A DE19628023C1 (de) 1996-07-11 1996-07-11 Monolithisches Filter
PCT/DE1997/001359 WO1998002934A1 (fr) 1996-07-11 1997-06-27 Filtre monolithique

Publications (2)

Publication Number Publication Date
EP0910876A1 EP0910876A1 (fr) 1999-04-28
EP0910876B1 true EP0910876B1 (fr) 1999-12-22

Family

ID=7799587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931679A Expired - Lifetime EP0910876B1 (fr) 1996-07-11 1997-06-27 Filtre monolithique

Country Status (5)

Country Link
EP (1) EP0910876B1 (fr)
JP (1) JP2000514622A (fr)
CA (1) CA2260212A1 (fr)
DE (2) DE19628023C1 (fr)
WO (1) WO1998002934A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906978A (en) 1996-08-14 1999-05-25 Hemocleanse, Inc. Method for iron delivery to a patient by transfer from dialysate
DE19855872B4 (de) * 1998-12-03 2004-04-15 Epcos Ag Mikrowellen-Keramikfilter
DE19903855B4 (de) * 1999-02-01 2010-04-15 Epcos Ag Antennenweiche

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5162760A (en) * 1991-12-19 1992-11-10 Motorola, Inc. Dielectric block filter with isolated input/output contacts
US5379011A (en) * 1992-10-23 1995-01-03 Motorola, Inc. Surface mount ceramic filter duplexer having reduced input/output coupling and adjustable high-side transmission zeroes
US5721520A (en) * 1995-08-14 1998-02-24 Motorola, Inc. Ceramic filter with ground plane features which provide transmission zero and coupling adjustment

Also Published As

Publication number Publication date
JP2000514622A (ja) 2000-10-31
CA2260212A1 (fr) 1998-01-22
DE59700909D1 (en) 2000-01-27
EP0910876A1 (fr) 1999-04-28
DE19628023C1 (de) 1997-06-12
WO1998002934A1 (fr) 1998-01-22

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