EP1350319A1 - Symmetrierübertrager - Google Patents
SymmetrierübertragerInfo
- Publication number
- EP1350319A1 EP1350319A1 EP02711795A EP02711795A EP1350319A1 EP 1350319 A1 EP1350319 A1 EP 1350319A1 EP 02711795 A EP02711795 A EP 02711795A EP 02711795 A EP02711795 A EP 02711795A EP 1350319 A1 EP1350319 A1 EP 1350319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loop
- symmetrical
- circuit board
- metal sheet
- shaped
- 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
Links
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
Definitions
- the invention relates to a balun (Balun) for transmitting large radio frequency power, for example at the symmetrical output of a transistor power amplifier for the transition to an unbalanced output line.
- Balun for transmitting large radio frequency power, for example at the symmetrical output of a transistor power amplifier for the transition to an unbalanced output line.
- Balancing transformers for higher performance have so far always been built using coaxial line technology. This results in relatively large-volume arrangements that are relatively expensive to produce by hand and must be connected as separate components to the rest of the circuit. It is also already known to manufacture balancing transformers in printed circuit technology and to form the conductor loops of the transformer either only on the upper side of the printed circuit board (British Patent GB 2 084 809) or on opposite sides of the printed circuit board (US Pat. No. 4,193,048). The latter symmetry transformers designed in printed circuit technology are, however, only suitable for the transmission of low high-frequency power.
- balun according to the invention can be produced very easily and inexpensively in printed circuit technology, directly integrated with the rest of the high-frequency circuit. Due to the additionally soldered metal sheet part, the thermal conductivity of the symmetrical conductor loop is increased so that the heat loss generated during the transmission of the high-frequency power can be completely dissipated to a heat sink. This additional metal sheet metal part can therefore be used in a known printed circuit technology
- Balancing transformer in which the conductor loops are formed only by the thin circuit board layer, two to three times the high-frequency power is transmitted.
- a balancing transformer according to the invention can be operated, for example, up to a transmission power of 150 watts despite its simple and inexpensive construction.
- the principle according to the invention can be applied to all usual balancing transformers designed in printed circuit technology, in which the asymmetrical conductor loop is formed either on the same side or on the opposite side of the printed circuit board.
- the principle according to the invention is also suitable for balancing transformers whose asymmetrical loop is designed as a double loop and which thus acts as a 4: 1 transformer.
- a balun according to the invention can be used wherever higher power has to be transmitted between high-frequency circuits. This is the case, for example, with high-frequency transmitters when merging or distributing high-frequency power. It has proven to be particularly advantageous to use a balun according to the invention at the output of push-pull transistor power amplifiers, since this results in a particularly compact and simple overall structure of a power amplifier with an asymmetrical output.
- the invention is explained in more detail below with the aid of a schematic drawing using an exemplary embodiment.
- the single figure shows the detail of a push-pull transistor power amplifier, which is formed in printed circuit technology on a fragmentary printed circuit board 1 and whose symmetrical output is connected to a conductor loop 2 symmetrical with respect to ground M of a balun.
- This symmetrical conductor loop 2 has the shape of a circular ring compressed from opposite sides with two opposite C-shaped loop halves 3 and 4, which merge integrally into one another at 5 and form a slot 6 on the opposite side.
- the two opposite ends 7 and 8 of the C-shaped loop halves 3 and 4 delimiting the slot 6 form the symmetrical input of the balun, they are over
- Transformation capacitors 9 are electrically connected to conductor tracks 10 and 11, with which the connection lugs of the high-frequency power transistor, not shown and inserted in the rectangular recess 12, make contact.
- the input circuit for the power transistor which is preferably also designed as a balun, is not shown in the figure, nor is the other conductor tracks for the connection of the transistors.
- the connection point 5 of the two loop halves 3 and 4 opposite the symmetrical input 7, 8 forms the electrically cold ground point, it is connected via a conductor track 13 to the ground surface M, which is only shown in fragments and surrounds the conductor loop 2. All conductor tracks (M, 2, 10, 11, 13, etc.) are formed in known printed circuit technology on the top of the circuit board 1 as thin metal layers.
- the asymmetrical output conductor loop which is designed for example as a double loop for resistance transformation, is in the Embodiment shown formed on the back of the circuit board 1 directly opposite the conductor loop 2 and therefore not visible in the figure.
- the circuit board 1 is placed on a heat sink 14, which has a cutout 15 below the conductor loop 2 or the asymmetrical conductor loop opposite it and not visible.
- Conductor loop of the balun is thicker and better thermally conductive. Those in the transfer of high
- Capacitors is introduced into the loop, is evenly distributed through the thickened ring and can via a screw 16, which is formed in a mounting hole 18 of an inwardly projecting projection 17 and screwed into a threaded hole 19 in the heat sink 14, for
- Cooling elements circulating coolant are degraded.
- a corresponding projection 21 is provided with a corresponding mounting hole 22, the latter is plated through and the via ring formed on the back of the circuit board 1 of this hole 22 lies flat in the assembled state on the top of the heat sink 14, so that the thermal contact between Conductor loop and heat sink is reinforced.
- the thickened configuration of the symmetrical conductor loop 2, 20 on the top of the circuit board 1 enables the transformation capacitors 9, via which the high-frequency power from the transistor (connecting tracks 10, 11) to the symmetrical input 7, 8 of the transformer, and possibly a another capacitor 23 arranged in the gap 6 can also be soldered to the copper ring 20 over a relatively large area, so that the heat loss of such capacitors is also dissipated well.
- solder paste is applied to the thin copper layer 2 of the conductor loop 2 in a known manner, then the copper sheet part 20 is placed flat on the solder paste and finally the printed circuit board, which is also equipped with the other components, is introduced into the hot air oven.
- strip-shaped solder mask 24 is applied to the opposite inner edges of the conductor track 2.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microwave Amplifiers (AREA)
- Amplifiers (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10105696A DE10105696A1 (de) | 2001-02-08 | 2001-02-08 | Symmetrierübertrager |
| DE10105696 | 2001-02-08 | ||
| PCT/EP2002/000146 WO2002063762A1 (de) | 2001-02-08 | 2002-01-09 | Symmetrierübertrager |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1350319A1 true EP1350319A1 (de) | 2003-10-08 |
| EP1350319B1 EP1350319B1 (de) | 2004-05-19 |
Family
ID=7673263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02711795A Expired - Lifetime EP1350319B1 (de) | 2001-02-08 | 2002-01-09 | Symmetrierübertrager |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6917254B2 (de) |
| EP (1) | EP1350319B1 (de) |
| JP (1) | JP4004960B2 (de) |
| DE (2) | DE10105696A1 (de) |
| WO (1) | WO2002063762A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004022185A1 (de) * | 2004-05-05 | 2005-12-01 | Rohde & Schwarz Gmbh & Co. Kg | Breitbandiger Symmetrierübertrager |
| JP4730233B2 (ja) * | 2006-07-11 | 2011-07-20 | 旭硝子株式会社 | 伝送線路変換装置 |
| CN101627450B (zh) * | 2007-03-08 | 2013-10-30 | 日本电气株式会社 | 电容元件、印刷布线板、半导体封装以及半导体电路 |
| US20100301987A1 (en) * | 2009-05-27 | 2010-12-02 | Stmicroelectronics S.A. | Millimeter wave transformer with a high transformation factor and a low insertion loss |
| SG10201504616TA (en) * | 2010-06-11 | 2015-07-30 | Ricoh Co Ltd | Information storage device, removable device, developer container, and image forming apparatus |
| DE102012106135A1 (de) | 2012-07-09 | 2014-05-22 | Cryoelectra Gmbh | Planarer Symmetrierübertrager mit verbesserter Wärmeabführung |
| ITMI20121238A1 (it) | 2012-07-17 | 2014-01-18 | St Microelectronics Srl | Dispositivo trasformatore balun planare |
| WO2016099314A1 (en) * | 2014-12-15 | 2016-06-23 | Siemens Research Center Limited Liability Company | A balun transformer with a cooling mechanism |
| US20170345542A1 (en) * | 2014-12-15 | 2017-11-30 | Siemens Aktiengesellschaft | Gas Chromatograph And Multiport Valve Unit For A Gas Chromatograph |
| CN108270407B (zh) * | 2016-12-30 | 2023-09-05 | 通用电气公司 | 一种平面巴伦及一种多层电路板 |
| EP3605842A1 (de) | 2018-08-02 | 2020-02-05 | TRUMPF Huettinger Sp. Z o. o. | Balun und verstärker mit dem balun |
| US12061215B2 (en) * | 2022-05-05 | 2024-08-13 | Applied Materials, Inc. | RF measurement from a transmission line sensor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1938152B1 (de) * | 1969-07-26 | 1971-01-07 | Hirschmann Radiotechnik | Klemmenanordnung mit Symmetrierübertrager |
| US4186352A (en) * | 1978-03-23 | 1980-01-29 | Rockwell International Corporation | Signal converter apparatus |
| US4193048A (en) * | 1978-06-22 | 1980-03-11 | Rockwell International Corporation | Balun transformer |
| GB2084809B (en) * | 1980-10-01 | 1984-01-18 | Communications Patents Ltd | Printed circuit transformers |
| FR2652197B1 (fr) * | 1989-09-18 | 1992-09-18 | Motorola Semiconducteurs Borde | Transformateurs du type symetrique-dissymetrique perfectionnes. |
| US5917386A (en) * | 1997-03-12 | 1999-06-29 | Zenith Electronics Corporation | Printed circuit transformer hybrids for RF mixers |
| US6144276A (en) * | 1998-04-02 | 2000-11-07 | Motorola, Inc. | Planar transformer having integrated cooling features |
| US6294965B1 (en) * | 1999-03-11 | 2001-09-25 | Anaren Microwave, Inc. | Stripline balun |
-
2001
- 2001-02-08 DE DE10105696A patent/DE10105696A1/de not_active Withdrawn
-
2002
- 2002-01-09 WO PCT/EP2002/000146 patent/WO2002063762A1/de not_active Ceased
- 2002-01-09 US US10/416,835 patent/US6917254B2/en not_active Expired - Lifetime
- 2002-01-09 JP JP2002563596A patent/JP4004960B2/ja not_active Expired - Lifetime
- 2002-01-09 EP EP02711795A patent/EP1350319B1/de not_active Expired - Lifetime
- 2002-01-09 DE DE50200466T patent/DE50200466D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02063762A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50200466D1 (de) | 2004-06-24 |
| US20040080376A1 (en) | 2004-04-29 |
| JP4004960B2 (ja) | 2007-11-07 |
| US6917254B2 (en) | 2005-07-12 |
| JP2004518384A (ja) | 2004-06-17 |
| EP1350319B1 (de) | 2004-05-19 |
| WO2002063762A1 (de) | 2002-08-15 |
| DE10105696A1 (de) | 2002-08-14 |
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