EP0343585A1 - Mikrowellen-Multiplexfilter - Google Patents

Mikrowellen-Multiplexfilter Download PDF

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Publication number
EP0343585A1
EP0343585A1 EP89109232A EP89109232A EP0343585A1 EP 0343585 A1 EP0343585 A1 EP 0343585A1 EP 89109232 A EP89109232 A EP 89109232A EP 89109232 A EP89109232 A EP 89109232A EP 0343585 A1 EP0343585 A1 EP 0343585A1
Authority
EP
European Patent Office
Prior art keywords
filter
antenna
common
filters
antennas
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.)
Granted
Application number
EP89109232A
Other languages
English (en)
French (fr)
Other versions
EP0343585B1 (de
Inventor
Catherine Simon
Robert Le Roux
Marc Sauvage
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.)
Alcatel CIT SA
Alcatel Lucent NV
Original Assignee
Alcatel Telspace SA
Alcatel Transmission par Faisceaux Hertziens SA
Alcatel NV
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 Alcatel Telspace SA, Alcatel Transmission par Faisceaux Hertziens SA, Alcatel NV filed Critical Alcatel Telspace SA
Publication of EP0343585A1 publication Critical patent/EP0343585A1/de
Application granted granted Critical
Publication of EP0343585B1 publication Critical patent/EP0343585B1/de
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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports

Definitions

  • the invention relates to microwave multiplexed filters and to their adjustment method.
  • the invention relates to microwave bandpass connection filters in "combline” (comb filter) or in diplexed evanescent mode. These filters are tunable in a certain frequency band and have at least one common coaxial access. These are contiguous or in-line filters, one operating in a frequency band and the other in a different band.
  • a filter of the known art is described in the article published in IEEE MTT Vol. 21 N ° 1 January 1973 entitled "Design of evanescent mode waveguide diplexers”.
  • This article describes a new procedure for producing filters constructed in waveguides below the cutoff.
  • This realization allows the total construction of a diplexer (the whole device is built in a single waveguide, which allows to do without T-junction and connection flanges) if a coaxial connection is used at the common junction .
  • the embodiment described uses bandpass filters valid for bandwidths of a few percent.
  • the agreement of the two filters is not independent and there is interaction of one filter on the other.
  • the filter tuning bands must necessarily be very close to each other because there is a resonator common to the two filters.
  • the width of this strip cannot exceed a few percent.
  • the diplexer is necessarily made up of two in-line filters.
  • the object of the invention is to make the filters independent of one another; that is to say such that, during the adjustment, there is no interaction of one on the other; which simplifies this setting.
  • the invention proposes a microwave multiplexed filter comprising at least two elementary filters provided with a coupling antenna, in the form of a crankshaft or any other form, and comprising a common access, this access being provided with a communication antenna.
  • crankshaft coupling rotatable around its axis to allow adjustment of the coupling between the antenna and the filter concerned, characterized in that the common access, being located astride the different elementary filters comprises as many crankshaft antennas as elementary filters.
  • the common access is composed: - a coaxial base, - a first metal "plug" piece which allows the guide to be filled after mounting the two crankshaft antennas, this piece fitting into a recess in the wall common to the two filters so as to be wedged by the coaxial base , - A common part which aims to electrically connect the coaxial base to the antennas, this common part having a narrowed end intended to be inserted tightly in the coaxial base.
  • an insulating tube intended for the passage of the common room in order to avoid a short circuit between the common room and the "plug" room.
  • Such an embodiment of the filter of the invention is simple and more efficient than the devices of the known art.
  • the elementary filters can be produced in line or side by side: In fact the invention can be applied in particular to two in-line filters, to two side by side filters, to three "triplexer” filters or to four "quadriplexer” filters.
  • the antenna of all the filters minus one is blocked, which allows the latter filter to be adjusted, the antenna of which is not blocked, - when this adjustment is made, the antenna of this filter is blocked, - then we unlock the antenna corresponding to another filter, and we set this filter and then re-block said antenna, -
  • the successive adjustment of all the elementary filters is thus carried out.
  • the filter of the invention represented in FIG. 1 comprises: - two elementary filters 10 and 11 joined in "combline" (comb filter) or evanescent technology, the number of poles of which is not limited (the example shown here relates to two three-pole filters); - two independent accesses (access 12) each equipped with a coupling antenna, in the form of a crankshaft, movable in rotation about its axis to allow adjustment of the coupling between the antenna and the filter. (Such an antenna is described in American patent application number 4,746,883; - A common access 14 where a different type of antenna is used. - screws 13 for tuning the filter.
  • the invention relates more precisely to this common access 14 which makes it possible to produce a filter comprising two elementary filters joined together, as shown in FIG. 1, but which also makes it possible to produce a filter comprising three or four elementary filters joined together as shown respectively in the Figures 2 and 3, or two elementary filters in line as shown in Figure 4.
  • the common access shown in Figures 5 and 6 is located on horseback between the two elementary filters 10 and 11.
  • the partition 28 at this location has been partially milled so as to allow the passage of the antennas 22 and 23.
  • This common access 14 is made up of: - a coaxial base 20 (for example of the removable type); - a first piece “plug” 21 made of metal which allows the guide to be recapped after mounting the two crankshaft antennas 22 and 23, this piece 21 fitting into a recess in the wall common to the two filters so as to be wedged by the coaxial base; - A common part 24 which aims to electrically connect the coaxial base 20 to the antennas 22 and 23.
  • This part 24 has a narrowed end 25 intended to be inserted tightly in the coaxial base;
  • the central part 26 of this part 24 being of length equal to the length of an insulating tube 29, described below, and greater than the length of the "plug" part 21, so that there is no contact between the common room and the "plug”room;
  • the other end 27 of this part with a diameter greater than that of the central part 26 but less than the diameter of the "plug” part 21, being pierced with two diametrically opposite holes 30 and 31 intended to receive the narrowed ends of the two antennas 22 and 23;
  • the diameters of the common part 24 and of the insulating tube 29 being calculated so as to be adapted to 50 Ohms; - two coupling antennas 22 and 23, in the form of a crankshaft,
  • the adjustment of the filter according to the invention is easy; indeed: - An antenna is blocked, that (22) of the first elementary filter 12 for example, with the corresponding locking screw 34, which makes it possible to hold the common part 24 in position and to adjust the second elementary filter 13 including the antenna 23 is not blocked, the adjustment of this filter being carried out, the antenna 23 of this filter 13 is blocked using the corresponding locking screw, - then the first antenna 22 is released, the first filter 12 is adjusted and then the antenna 22 is re-blocked.
  • the “plug” part 48 is also modified: its diameter is increased in order to allow passage to the antennas which must be more curved to be sufficiently distant from each other.
  • this part is now attached to the filter by at least two screws 49 and 50.
  • the coaxial base 53 is itself fixed to the “plug” part by at least two screws 51, 52 as shown in FIG. 7.
  • the filter is made of one-piece extruded aluminum, of square shape. It is possible to give it other forms: rectangular or circular (only in the case of an online diplexer) and to make it in several parts, with cover.
  • the two independent accesses can be made directly as a guide.
  • the "plug" part in the examples shown is either wedged in the guide by the base (figure 5) or held by two screws in the guide (figure 7) but it is also possible to screw it into the wall of the guide by threading and directly tapping the guide.
  • the common part 39 is identical to that of the "quadriplexer”; but we only use three crankshaft antennas, one hole remaining unused. It is also possible to machine only three holes in the common room.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP89109232A 1988-05-27 1989-05-23 Mikrowellen-Multiplexfilter Expired - Lifetime EP0343585B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8807108 1988-05-27
FR8807108A FR2632123B1 (fr) 1988-05-27 1988-05-27 Filtre multiplexe en hyperfrequence, et procede de reglage d'un tel filtre

Publications (2)

Publication Number Publication Date
EP0343585A1 true EP0343585A1 (de) 1989-11-29
EP0343585B1 EP0343585B1 (de) 1993-12-01

Family

ID=9366696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109232A Expired - Lifetime EP0343585B1 (de) 1988-05-27 1989-05-23 Mikrowellen-Multiplexfilter

Country Status (6)

Country Link
US (1) US4980662A (de)
EP (1) EP0343585B1 (de)
JP (1) JPH0226101A (de)
CA (1) CA1306556C (de)
DE (1) DE68911031T2 (de)
FR (1) FR2632123B1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151670A (en) * 1991-04-10 1992-09-29 Radio Frequency Systems, Inc. Duplexing filter
US5291158A (en) * 1991-12-26 1994-03-01 Radio Frequency Systems, Inc. High frequency filter having common coupling rods fixedly mounted and coupled through a common wall
JP2581912Y2 (ja) * 1992-10-07 1998-09-24 株式会社村田製作所 デュプレクサ
NZ248549A (en) * 1993-08-31 1997-01-29 Deltec New Zealand Loop coupler for resonator: rotates to adjust loaded q
DE69834370T2 (de) * 1997-08-28 2007-03-15 The Boeing Co., Chicago Kupplungsmechanismus für TE011- und TE01delta- Mode-Resonatoren
US6137383A (en) * 1998-08-27 2000-10-24 Merrimac Industries, Inc. Multilayer dielectric evanescent mode waveguide filter utilizing via holes
US6154106A (en) * 1998-08-27 2000-11-28 Merrimac Industries, Inc. Multilayer dielectric evanescent mode waveguide filter
WO2000026986A1 (fr) * 1998-11-02 2000-05-11 Jury Vyacheslavovich Kislyakov Multiplexeur
US6426681B1 (en) * 2000-11-28 2002-07-30 Behrouz Amini High power adjustable RF coupling loop
US6559740B1 (en) * 2001-12-18 2003-05-06 Delta Microwave, Inc. Tunable, cross-coupled, bandpass filter
SE530302C2 (sv) * 2006-09-14 2008-04-22 Powerwave Technologies Sweden En antennfiltermodul
JP4491001B2 (ja) * 2007-08-31 2010-06-30 日本アンテナ株式会社 フィルタ
TWM343255U (en) * 2008-03-14 2008-10-21 Universal Microwave Technology Inc Antenna terminal feed-in coupling device for duplexer
US8008994B2 (en) * 2009-05-01 2011-08-30 Alcatel Lucent Tunable capacitive input coupling
US9888568B2 (en) 2012-02-08 2018-02-06 Crane Electronics, Inc. Multilayer electronics assembly and method for embedding electrical circuit components within a three dimensional module
US9230726B1 (en) 2015-02-20 2016-01-05 Crane Electronics, Inc. Transformer-based power converters with 3D printed microchannel heat sink

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910659A (en) * 1956-05-21 1959-10-27 Bell Telephone Labor Inc Microwave impedance branch
US3105207A (en) * 1961-01-04 1963-09-24 Elliott Brothers London Ltd Adjustable coupler between partially intersecting coaxial lines having coupling varied by center conductor movement
DE3028925A1 (de) * 1980-07-30 1982-02-11 Siemens AG, 1000 Berlin und 8000 München Antennenweiche, bestehend aus wenigstens zwei parallelgeschalteten filtern fuer sehr kurze elektromagnetische wellen
EP0205151A1 (de) * 1985-06-13 1986-12-17 Alcatel Transmission Par Faisceaux Hertziens A.T.F.H. Mikrowellen-Bandpassfilter vom Dämpfungstyp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166256A (en) * 1977-01-05 1979-08-28 Hughes Aircraft Company Anti multipacting resonant cavity
US4249147A (en) * 1978-10-20 1981-02-03 Tx Rx Systems Inc. Cavity filter and multi-coupler utilizing same
JPS59110202A (ja) * 1982-12-15 1984-06-26 Nippon Dengiyou Kosaku Kk 帯域通過ろ波器を用いた分波器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910659A (en) * 1956-05-21 1959-10-27 Bell Telephone Labor Inc Microwave impedance branch
US3105207A (en) * 1961-01-04 1963-09-24 Elliott Brothers London Ltd Adjustable coupler between partially intersecting coaxial lines having coupling varied by center conductor movement
DE3028925A1 (de) * 1980-07-30 1982-02-11 Siemens AG, 1000 Berlin und 8000 München Antennenweiche, bestehend aus wenigstens zwei parallelgeschalteten filtern fuer sehr kurze elektromagnetische wellen
EP0205151A1 (de) * 1985-06-13 1986-12-17 Alcatel Transmission Par Faisceaux Hertziens A.T.F.H. Mikrowellen-Bandpassfilter vom Dämpfungstyp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 229 (E-273)[1666], 20 octobre 1984, page 57 E 273; & JP-A-59 110 202 (NIHON DENGIYOU KOUSAKU K.K.) 26-06-1984 *

Also Published As

Publication number Publication date
EP0343585B1 (de) 1993-12-01
US4980662A (en) 1990-12-25
JPH0226101A (ja) 1990-01-29
FR2632123A1 (fr) 1989-12-01
DE68911031T2 (de) 1994-03-31
FR2632123B1 (fr) 1991-01-18
DE68911031D1 (de) 1994-01-13
CA1306556C (fr) 1992-08-18

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