WO2001020708A1 - Symmetrierglied - Google Patents
Symmetrierglied Download PDFInfo
- Publication number
- WO2001020708A1 WO2001020708A1 PCT/IB2000/001366 IB0001366W WO0120708A1 WO 2001020708 A1 WO2001020708 A1 WO 2001020708A1 IB 0001366 W IB0001366 W IB 0001366W WO 0120708 A1 WO0120708 A1 WO 0120708A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- line
- adjacent
- symmetrical
- balun
- connection gate
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
Definitions
- the present invention relates to a balun, consisting of four coupled planar lines running side by side with an asymmetrical connection gate and two symmetrical connection gates.
- Symmetry elements make transitions between symmetrical and asymmetrical in a known manner
- Transmission lines represent a symmetrical line if a signal transmitted over it does not have the ground as a reference potential.
- an unbalanced transmission line is connected on one side to ground, so that a signal transmitted over it has the ground as a reference potential.
- Symmetry members of this type are e.g. at the inputs and outputs of double-balanced mixers or amplifiers or modulators etc.
- a symmetry element described at the outset, consisting of four interconnected planar lines, is known from DE 197 29 761 AI.
- This balun consists of two 3db couplers, each of which consists of two planar lines coupled over a length of ⁇ / 4.
- They who Both couplers are designed in the form of a two-pole bandpass filter, one being in an open circuit configuration and the other in a short-circuited circuit configuration.
- the two quarter-wave couplers are connected to each other in such a way that a 3-port balun is created, which has one connection for unbalanced signals and two connections for balanced signals. With the line coupler in the open circuit configuration, the opposite ends of the two lines are idle. Another end of the two lines serves as a symmetrical connection.
- the opposite end of the other line is connected to one end of one of the two line couplers configured in a shorted circuit configuration. From this line coupler, two opposite ends of the two lines are grounded, and another end of a line forms a further connection for symmetrical signals. The two interconnected line ends of the two line couplers form the connection gate for unbalanced signals.
- the balun is constructed using multilayer technology. The manufacturing effort is therefore large, which is unfavorable for mass production.
- the invention is based on the object of specifying a space-saving and as simple as possible to manufacture symmetrizing member.
- balun is constructed as follows according to the features of claim 1.
- One end of a first of four lines serves as a first symmetrical one Connection gate.
- the other end of this first line is connected to the adjacent end of the second adjacent line.
- the end of the second line connected to the first line forms the asymmetrical connection gate, and the other end of the second line lies on
- the end lying next to the asymmetrical connection gate is in contact with ground, and the other end of the third line serves as a second symmetrical connection gate.
- the end located next to the second symmetrical connection gate is connected to ground, and the other end of the fourth line is connected to the end of the second line forming the asymmetrical connection gate.
- the coupling length of the four lines corresponds to approximately a quarter of the average operating wavelength of the balun.
- the balun shown in the drawing consists of four juxtaposed planar lines 1, 2, 3 and 4.
- the line length over which the lines 1, 2, 3 and 4 are coupled to each other is about a quarter of the average operating wavelength of the balun.
- connection gate 5 for symmetrical signals.
- the other end of the first Line 1 is conductively connected to the adjacent end of the adjacent second line 2 via an air bridge 6.
- the same end of the second line 2 is designed as a connection gate 7 for asymmetrical signals.
- the end of the second line 2 opposite this connecting gate 7 is in contact with ground 8.
- the short circuit to ground is realized in a known manner by means of a plated-through hole in the substrate carrying the planar lines 1, 2, 3, 4 to form a ground surface applied to the underside of the substrate.
- the end of the third line 3, which is adjacent to the ground short circuit 8 of the second line 2, is formed as a second symmetrical connecting gate 9 of the third line 3 running alongside the second line 2. That this
- Connection gate 9 opposite end of the third line 3 is provided with a ground connection 10.
- the end of the fourth line 4, which is adjacent to the connecting gate 9 of the third line 3, is also provided with a ground contact 11.
- the end of the fourth line 4 opposite this ground contact 11 is connected via an air bridge 12 to the end of the second line 2, which is designed as an asymmetrical connection gate 7.
- the two ends of lines 2 and 4 which are at ground potential can be contacted with one another via an air bridge. Then one of the two plated-through holes 8, 11 can be saved to the ground line.
Landscapes
- Coils Or Transformers For Communication (AREA)
- Waveguides (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Carbon And Carbon Compounds (AREA)
- Inorganic Insulating Materials (AREA)
- Glass Compositions (AREA)
- Amplifiers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Junction Field-Effect Transistors (AREA)
- Non-Reversible Transmitting Devices (AREA)
- Multi-Conductor Connections (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU73065/00A AU7306500A (en) | 1999-09-14 | 2000-09-12 | Balun |
DE50001914T DE50001914D1 (de) | 1999-09-14 | 2000-09-12 | Symmetrierglied |
US10/088,365 US6714094B1 (en) | 1999-09-14 | 2000-09-12 | Balun |
EP00960911A EP1218961B1 (de) | 1999-09-14 | 2000-09-12 | Symmetrierglied |
AT00960911T ATE238612T1 (de) | 1999-09-14 | 2000-09-12 | Symmetrierglied |
NO20021284A NO20021284L (no) | 1999-09-14 | 2002-03-14 | Symmetriledd |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19943955A DE19943955A1 (de) | 1999-09-14 | 1999-09-14 | Symmetrierglied |
DE19943955.9 | 1999-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001020708A1 true WO2001020708A1 (de) | 2001-03-22 |
Family
ID=7921942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2000/001366 WO2001020708A1 (de) | 1999-09-14 | 2000-09-12 | Symmetrierglied |
Country Status (8)
Country | Link |
---|---|
US (1) | US6714094B1 (de) |
EP (1) | EP1218961B1 (de) |
CN (1) | CN1206769C (de) |
AT (1) | ATE238612T1 (de) |
AU (1) | AU7306500A (de) |
DE (2) | DE19943955A1 (de) |
NO (1) | NO20021284L (de) |
WO (1) | WO2001020708A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6714094B1 (en) | 1999-09-14 | 2004-03-30 | Marconi Communications Gmbh | Balun |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6819199B2 (en) * | 2001-01-22 | 2004-11-16 | Broadcom Corporation | Balun transformer with means for reducing a physical dimension thereof |
JP4079173B2 (ja) * | 2004-02-06 | 2008-04-23 | 株式会社村田製作所 | 平衡型分配器 |
WO2021053934A1 (ja) * | 2019-09-17 | 2021-03-25 | 株式会社村田製作所 | バラン |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0853377A2 (de) * | 1996-12-16 | 1998-07-15 | Murata Manufacturing Co., Ltd. | Vierphasen Phasenwandler |
EP0866513A2 (de) * | 1997-03-20 | 1998-09-23 | Nokia Mobile Phones Ltd. | Phasen- und Symmetrierschaltung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4739289A (en) * | 1986-11-24 | 1988-04-19 | Celeritek Inc. | Microstrip balun having improved bandwidth |
US5003622A (en) * | 1989-09-26 | 1991-03-26 | Astec International Limited | Printed circuit transformer |
US5697088A (en) * | 1996-08-05 | 1997-12-09 | Motorola, Inc. | Balun transformer |
JPH10163715A (ja) * | 1996-11-26 | 1998-06-19 | Murata Mfg Co Ltd | 不平衡−平衡変換器 |
DE19943955A1 (de) | 1999-09-14 | 2001-04-12 | Bosch Gmbh Robert | Symmetrierglied |
-
1999
- 1999-09-14 DE DE19943955A patent/DE19943955A1/de not_active Ceased
-
2000
- 2000-09-12 CN CNB008156654A patent/CN1206769C/zh not_active Expired - Fee Related
- 2000-09-12 DE DE50001914T patent/DE50001914D1/de not_active Expired - Lifetime
- 2000-09-12 EP EP00960911A patent/EP1218961B1/de not_active Expired - Lifetime
- 2000-09-12 AT AT00960911T patent/ATE238612T1/de not_active IP Right Cessation
- 2000-09-12 AU AU73065/00A patent/AU7306500A/en not_active Abandoned
- 2000-09-12 US US10/088,365 patent/US6714094B1/en not_active Expired - Lifetime
- 2000-09-12 WO PCT/IB2000/001366 patent/WO2001020708A1/de active IP Right Grant
-
2002
- 2002-03-14 NO NO20021284A patent/NO20021284L/no not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0853377A2 (de) * | 1996-12-16 | 1998-07-15 | Murata Manufacturing Co., Ltd. | Vierphasen Phasenwandler |
EP0866513A2 (de) * | 1997-03-20 | 1998-09-23 | Nokia Mobile Phones Ltd. | Phasen- und Symmetrierschaltung |
Non-Patent Citations (1)
Title |
---|
CHO C ET AL: "A NEW DESIGN PROCEDURE FOR SINGLE-LAYER AND TWO-LAYER THREE-LINE BALUNS", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,US,IEEE INC. NEW YORK, vol. 46, no. 12, PART 02, December 1998 (1998-12-01), pages 2514 - 2519, XP000805631, ISSN: 0018-9480 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6714094B1 (en) | 1999-09-14 | 2004-03-30 | Marconi Communications Gmbh | Balun |
Also Published As
Publication number | Publication date |
---|---|
NO20021284D0 (no) | 2002-03-14 |
DE50001914D1 (de) | 2003-05-28 |
AU7306500A (en) | 2001-04-17 |
EP1218961A1 (de) | 2002-07-03 |
DE19943955A1 (de) | 2001-04-12 |
CN1206769C (zh) | 2005-06-15 |
ATE238612T1 (de) | 2003-05-15 |
NO20021284L (no) | 2002-05-14 |
EP1218961B1 (de) | 2003-04-23 |
US6714094B1 (en) | 2004-03-30 |
CN1390370A (zh) | 2003-01-08 |
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