WO2006106567A1 - スイッチ回路 - Google Patents
スイッチ回路 Download PDFInfo
- Publication number
- WO2006106567A1 WO2006106567A1 PCT/JP2005/005900 JP2005005900W WO2006106567A1 WO 2006106567 A1 WO2006106567 A1 WO 2006106567A1 JP 2005005900 W JP2005005900 W JP 2005005900W WO 2006106567 A1 WO2006106567 A1 WO 2006106567A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mems
- terminal
- voltage
- switch
- antenna
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
- H01P1/127—Strip line switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/184—Strip line phase-shifters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
- H01Q9/14—Length of element or elements adjustable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Definitions
- the present invention uses a switch circuit composed of a plurality of MEMS (microelectromechanical systems) switch forces having different drive voltages in a microwave circuit or an antenna circuit, and the microwave circuit or antenna circuit depends on the value of the drive voltage.
- the present invention relates to a switch circuit that can change the configuration of an antenna circuit.
- FIG. 5 is a diagram showing a configuration of a conventional microphone mouth wave circuit (see, for example, Non-Patent Document 1).
- a conventional microwave circuit is provided with a Lange coupler 503 to which an input terminal 501 and an output terminal 502 are connected, and a signal circuit connected to coupling terminals 506 and 507 of the Lange coupler 503.
- the Lange coupler 503 is connected to an input terminal 504 connected to the input terminal 501 of the microwave circuit, an output terminal 505 connected to the output terminal 502 of the microwave circuit, a coupling terminal 506, and a coupling terminal 507. Being sung.
- the signal circuit has a line 511 having one end connected to the coupling terminal 506 and the other end connected to the ground 513, and a line 512 having one end connected to the coupling terminal 507 and the other end connected to the ground 514.
- MEMS switch 521, 525, 529 connected in the middle of line 511 from the side near coupling terminal 506, and MEMS switch 522 connected in the middle of line 512 from the direction of coupling terminal 507! , 526, 530 and the bias terminal 551 connected to the MEMS switch 522 when connected to the MEMS switch 521 and the bias connected to the MEMS switch 526
- a terminal 552 and a bias terminal 553 connected to the MEMS switch 530 are connected to the MEMS switch 529.
- FIG. 5 shows a circuit for 2 bits of the 4-bit phase shifter.
- the Lange coupler 503 outputs half of the high-frequency signal input from the input terminal 504 to the coupling terminal 506 and the other half to the coupling terminal 507.
- the output signal of coupling terminal 507 is 90 degrees behind the output signal of coupling terminal 506.
- the high-frequency signal output to the coupling terminal 506 is reflected by the MEMS switch 521, the MEMS S switch 525, the MEMS switch 529, or the terminal ground 513, and again passes through the coupling terminal 506 to the input terminal 504. Half and the other half are output to output terminal 505. At this time, the phase of the output signal at the output terminal 505 is 90 degrees behind the output signal at the input terminal 504.
- the high-frequency signal output to the coupling terminal 507 is reflected by the MEMS switch 522, the MEMS switch 526, the MEMS switch 530, or the termination ground 514, and again passes through the coupling terminal 507 to be input.
- the phase of the output signal at the input terminal 504 is delayed by 90 degrees from the output signal at the output terminal 505.
- the MEMS switches 521 and 522 force S lines 511 and 512 are short-circuited at the positions of the MEMS switches 521 and 522. Since the reflected wave in each line is reflected by the same reflection phase ⁇ , it propagates in the order from input terminal 501 to input terminal 504, coupling terminal 506, MEMS switch 521, coupling terminal 506, output terminal 505, and output terminal 502. Signals that propagate from input terminal 501 to input terminal 504, coupling terminal 507, MEMS switch 522, coupling terminal 507, output terminal 505, and output terminal 502 have no phase difference and are superimposed.
- the signals propagating in the order of the coupling terminal 507, the MEMS switch 522, the coupling terminal 507, the input terminal 504, and the input terminal 501 are in reverse phase and cancel each other.
- the high-frequency signal input from the input terminal 501 is reflected at the same position on the lines 511 and 512, all of the high-frequency signal is output to the output terminal 502 with a certain phase delay.
- the amount of phase delay is determined by bias terminal 551, bias terminal 552, or The bias terminal of the offset terminal 553!
- Non-Patent Document 1 A. Malczewski, S. Eshelman, B. Pillans, J. Ehmke, and C. L.
- the conventional microwave circuit as described above has a problem that at least three bias terminals are required.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to reduce the bias terminals and to simplify the configuration of a circuit such as a microwave circuit or an antenna circuit. A switch circuit that can be changed is obtained.
- the switch circuit according to the present invention has a plurality of MEMS switches connected in series with different driving voltages and parallel! / ⁇ , and a single driving the plurality of MEMS switches with a plurality of driving voltages.
- the voltage source is provided.
- the switch circuit according to the present invention has an effect that the number of bias terminals can be reduced and the configuration of a circuit such as a microwave circuit or an antenna circuit can be easily changed.
- FIG. 1 is a diagram showing a configuration of a microwave circuit according to Embodiment 1 of the present invention.
- FIG. 2 is a graph showing the relationship between the voltage at the bias terminal of the microwave circuit according to Embodiment 1 of the present invention and the length to the ground point of the line.
- FIG. 3 is a diagram showing a configuration of an antenna circuit according to Embodiment 2 of the present invention.
- FIG. 4 is a diagram showing a configuration of an antenna circuit according to Embodiment 3 of the present invention.
- FIG. 5 is a diagram showing a configuration of a conventional microwave circuit.
- Example 1 describes an example in which a switch circuit composed of a plurality of MEMS switchers having different driving voltages is used for a microwave circuit, and Examples 2 and 3 are examples in which the switch circuit is used as an antenna circuit.
- An example used will be described.
- the relationship between voltage (00 ⁇ ⁇ 2 ⁇ 3 ⁇ ) and length (0 ⁇ L1 ⁇ L2 ⁇ L3 ⁇ L4 ' ⁇ ) is related to the relative size in each example. To express. Therefore, for example, the voltage VI of the first embodiment and the voltage VI of the second embodiment are not always the same.
- Example 1 describes an example in which a switch circuit composed of a plurality of MEMS switchers having different driving voltages is used for a microwave circuit
- Examples 2 and 3 are examples in which the switch circuit is used as an antenna circuit.
- An example used will be described.
- the relationship between voltage (00 ⁇ ⁇ 2 ⁇ 3 ⁇ ) and length (0 ⁇ L1 ⁇ L2 ⁇ L3 ⁇ L4 ' ⁇ ) is related to
- FIG. 1 is a diagram showing a configuration of a microwave circuit according to Embodiment 1 of the present invention.
- the microwave circuit according to the first embodiment includes a 90 degree—3 dB coupler 3 to which an input terminal 1 and an output terminal 2 are connected, and a coupling terminal 6 and 7 of a 90 degree—3 dB coupler 3.
- a connected signal circuit is provided.
- the signal circuit has a line 11 having one end connected to the coupling terminal 6 and the other end connected to the ground 13, and a line 12 having one end connected to the coupling terminal 7 and the other end connected to the ground 14. And join Force close to terminal 6 MEMS switches 21, 25, 29 connected in the middle of line 11, MEMS switch 22, 26, 30 connected in the middle of line 12 also in the direction close to coupling terminal 7, MEMS switch A common voltage source 41 is provided which is connected to 21, 22, 25, 26, 29 and 30 through a noise terminal 43 and connected to the ground 42 at the other end.
- FIG. 2 is a graph showing the relationship between the voltage at the bias terminal of the microwave circuit according to Embodiment 1 of the present invention and the length to the ground point of the line.
- the voltage is 0 (volt) VI and V2 ⁇ V3.
- the length has a relationship of 0 ⁇ L1 ⁇ L2 ⁇ L3 ⁇ L4.
- the 90-degree 3 dB coupler 3 outputs half of the high-frequency signal input from the input terminal 4 to the coupling terminal 6 and the other half to the coupling terminal 7.
- the output signal of coupling terminal 7 is 90 degrees behind the output signal of coupling terminal 6.
- the high-frequency signal output to the coupling terminal 6 is reflected by the MEMS switch 21, or the MEMS switch 25, or the MEMS switch 29, or the terminal ground 13, and again passes through the coupling terminal 6 and halves the input terminal 4. The other half is output to output terminal 5. At this time, the phase of the output signal at output terminal 5 is 90 degrees behind the output signal at input terminal 4.
- the high-frequency signal output to the coupling terminal 7 is reflected by the MEMS switch 22, or the M EMS switch 26, the MEMS switch 30, or the terminal ground 14, and again passes through the coupling terminal 7 to be input.
- the output signal of the output terminal 5 is delayed in phase by 90 degrees from the output signal of the input terminal 4.
- the MEMS switch 21 and 22 force lines 11 and 12 are short-circuited at the position of the MEMS switch 21 and 22. Since the reflected waves on the lines 11 and 12 are reflected by the same reflection phase ⁇ , the input terminal 1 to the input terminal 4, the coupling terminal 6, the MEMS switch 21, the coupling terminal 6, the output terminal 5, and the output terminal 2 Signals propagating in sequence and signals propagating in the order of input terminal 1 to input terminal 4, coupling terminal 7, MEMS switch 22, coupling terminal 7, output terminal 5 and output terminal 2 have no phase difference and are superimposed. .
- phase delay can be selected from four voltages of 0 volt (OV), VI, V2, and V3 of the bias terminal 43 voltage.
- the MEMS switches 29 and 30 near the ends of the lines 11 and 12 are driven with a low driving voltage, and the MEMS switches 21 and 2 2 near the input ends of the lines 11 and 12 are driven. Driving force with high driving voltage Conversely, MEMS switches 29 and 30 near the end of lines 11 and 12 are driven with high driving voltage, and MEMS switches 21 and 22 near the input terminals of lines 11 and 12 are driven. You can drive with low driving voltage!
- FIG. 3 is a diagram showing a configuration of an antenna circuit according to Embodiment 2 of the present invention.
- the antenna circuit according to the second embodiment includes an antenna 101 composed of a pair of comb-shaped conductors, a capacitor 102 loaded between comb teeth at the tip of the antenna 101, and an antenna 101 Is loaded between the second comb teeth from the tip of the antenna and the voltage at both ends is equal to or higher than VI.
- MEMS switch 104 which has a large capacity when V is greater than or equal to V2
- MEMS switch 105 which is loaded between the fourth comb teeth of the tip force of antenna 101, and has a large capacity when the voltage at both ends is V3 or greater
- the feed point A voltage source 109 for driving the MEMS switches 103 to 105 is provided between 107 and 108.
- the antenna 101 enters the lower surface of the ground 106 from the feeding points 107 and 108, and is connected to the wave source 112 via the capacitors 110 and 111.
- the ground 113 of the wave source 112 has the same potential as the ground 106.
- the voltage has a relationship of 0 (volt) to VKV2 to V3.
- the length is 0, L1, L2 ⁇ L3, L4.
- the antenna 101 is connected by the capacitor 102 at the tip, and operates at a frequency close to the 1Z2 wavelength of length L4.
- the MEMS switch 103 When the voltage of the voltage source 109 is not less than VI and less than V2, the MEMS switch 103 has a large capacity and passes a high-frequency signal. Therefore, the antenna 101 is connected by the MEMS switch 103 and operates at a frequency close to the 1Z2 wavelength of length L3.
- the MEMS switch 104 When the voltage of the voltage source 109 is greater than or equal to V2 and less than V3, the MEMS switch 104 has a large capacity and passes a high-frequency signal. Therefore, the antenna 101 is connected by the MEMS switch 104 and operates at a frequency close to the 1Z2 wavelength of length L2.
- the MEMS switch 105 When the voltage of the voltage source 109 is V3 or higher, the MEMS switch 105 has a large capacity and passes a high-frequency signal. Therefore, the antenna 101 is connected by the MEMS switch 105 and operates at a frequency close to the Z2 wavelength of length L1.
- the MEMS switches 103 to 105 have a capacity, and can also be referred to as MEMS capacitors 103 to 105. Therefore, in the second embodiment, it can be explained that the drive voltage of the MEMS capacitor 105 having a large capacity is increased to reduce the drive voltage of the MEMS capacitor 103 having a small capacity. In actual operation, the drive voltage of the MEMS capacitor 105 with a large capacity may be lowered to increase the drive voltage of the MEMS capacitor 103 with a small capacity.
- FIG. 4 is a diagram showing a configuration of an antenna circuit according to Embodiment 3 of the present invention.
- the antenna circuit according to the third embodiment includes an antenna composed of antenna conductors 201, 202, 203, 204, 205, and 206, and a MEMS provided between the antenna conductors 201 and 202.
- Switch 210, coil 211 provided between antenna conductors 201 and 202, coil 212 provided between antenna conductors 202 and 203, and 3 node 213 provided between antenna conductors 204 and 205
- a coil 214 provided between the antenna conductors 205 and 206, a coil 216 connected to the outermost side of the antenna conductor 203, and a coil 217 connected to the outermost side of the antenna conductor 206, Ru
- the antenna conductors 201, 202, 203 constitute one conductor of the antenna, and each is made of another conductor.
- the antenna conductors 204, 205, and 206 constitute the other conductor of the antenna and can be made of different conductors.
- one end is connected to the coil 216, the other end is connected to the grounding part 219, the other end is connected to the coil 217, and the other end is connected to the grounding part 221.
- a DC voltage is applied between the capacitor 220, the coil 222 connected to the innermost side of the antenna conductor 201, the coinlet 223 connected to the innermost side J of the antenna conductor 204, and the coinoles 222 and 223 and the coinoles 216 and 217.
- Voltage source 227 to be applied capacitor 224 connected between the innermost side of the antenna conductor 201 and the high-frequency signal input / output terminal 226, and connected between the innermost side of the antenna conductor 204 and the high-frequency signal input / output terminal 226. And a capacitor 225 are provided.
- the voltage has a relationship of 0 (volt) to VKV2.
- the length has a relationship of 0 ⁇ LKL2 ⁇ L3.
- the MEMS switches 207 and 209 are designed to be in a connected state when the voltage at both ends is equal to or higher than VI, and to be in an open state when the voltage is lower than VI.
- the MEMS switches 208 and 210 are designed to be connected when the voltage force SV2 at both ends is greater than or equal to SV2, and open when less than V2.
- the antenna circuit is composed of two conductors: a conductor to which antenna conductors 201, 202, and 203 are connected and a conductor to which antenna conductors 204, 205, and 206 are connected, and operates as a dipole antenna having a length L3. Since all coils show a large resistance to high-frequency signals, values are selected so that high-frequency signals are not passed and all capacitors are not passed through DC noise.
- the antenna circuit is composed of two conductors, a conductor to which antenna conductors 201 and 202 are connected and a conductor to which antenna conductors 204 and 205 are connected, and operates as a dipole antenna having a length L2.
- the antenna circuit is composed of two conductors, an antenna conductor 201 and an antenna conductor 204, and operates as a dipole antenna having a length L1.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007512371A JPWO2006106567A1 (ja) | 2005-03-29 | 2005-03-29 | スイッチ回路 |
| EP05727556A EP1865570A4 (en) | 2005-03-29 | 2005-03-29 | SWITCHING NETWORK |
| US11/886,589 US20090027138A1 (en) | 2005-03-29 | 2005-03-29 | Switch Circuit |
| PCT/JP2005/005900 WO2006106567A1 (ja) | 2005-03-29 | 2005-03-29 | スイッチ回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2005/005900 WO2006106567A1 (ja) | 2005-03-29 | 2005-03-29 | スイッチ回路 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006106567A1 true WO2006106567A1 (ja) | 2006-10-12 |
Family
ID=37073136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/005900 Ceased WO2006106567A1 (ja) | 2005-03-29 | 2005-03-29 | スイッチ回路 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20090027138A1 (ja) |
| EP (1) | EP1865570A4 (ja) |
| JP (1) | JPWO2006106567A1 (ja) |
| WO (1) | WO2006106567A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010506548A (ja) * | 2007-12-21 | 2010-02-25 | ビ−エイイ− システムズ パブリック リミテッド カンパニ− | マイクロ波結合器 |
| JP2016171501A (ja) * | 2015-03-13 | 2016-09-23 | 国立大学法人山形大学 | フェーズドアレイアンテナ |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12155128B2 (en) | 2022-01-04 | 2024-11-26 | Wisconsin Alumni Research Foundation | Electronically reconfigurable 1-bit phase quantization phased array element |
| US12183986B2 (en) | 2022-01-04 | 2024-12-31 | Wisconsin Alumni Research Foundation | Electronically reconfigurable 2-bit phase quantization phased array element |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH087585A (ja) * | 1993-12-28 | 1996-01-12 | Sgs Thomson Microelettronica Spa | 不揮発性メモリ用計数終了検出装置 |
| JPH08213803A (ja) * | 1994-10-31 | 1996-08-20 | Texas Instr Inc <Ti> | 高周波信号用スイッチを含む移相器 |
| JPH10285093A (ja) * | 1997-03-31 | 1998-10-23 | Mitsubishi Electric Corp | ダイバーシチ装置及びこの装置を使用した携帯無線機 |
| JP2004282150A (ja) * | 2003-03-12 | 2004-10-07 | Sony Corp | 移相器及びフェーズドアレイアンテナ装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843358A (en) * | 1987-05-19 | 1989-06-27 | General Electric Company | Electrically positionable short-circuits |
| GB2239142A (en) * | 1989-12-15 | 1991-06-19 | Philips Electronic Associated | Variable bi-phase modulator circuits and variable resistors |
| US5349312A (en) * | 1993-05-28 | 1994-09-20 | Raytheon Company | Voltage variable attenuator |
| US5526172A (en) * | 1993-07-27 | 1996-06-11 | Texas Instruments Incorporated | Microminiature, monolithic, variable electrical signal processor and apparatus including same |
| US5428320A (en) * | 1994-08-29 | 1995-06-27 | Motorola, Inc. | Biphase modulator and method without matching elements |
| US6580337B1 (en) * | 1999-07-19 | 2003-06-17 | California Institute Of Technology | MEMS switch |
| US6639488B2 (en) * | 2001-09-07 | 2003-10-28 | Ibm Corporation | MEMS RF switch with low actuation voltage |
| US7151501B2 (en) * | 2003-02-21 | 2006-12-19 | Kyocera Wireless Corp. | Microelectromechanical switch (MEMS) antenna |
| US7129805B2 (en) * | 2005-02-01 | 2006-10-31 | Continental Microwave & Tool Company, Inc. | Method of increasing the operating frequency in a series-shunt configured PIN diode switch |
-
2005
- 2005-03-29 EP EP05727556A patent/EP1865570A4/en not_active Withdrawn
- 2005-03-29 JP JP2007512371A patent/JPWO2006106567A1/ja active Pending
- 2005-03-29 WO PCT/JP2005/005900 patent/WO2006106567A1/ja not_active Ceased
- 2005-03-29 US US11/886,589 patent/US20090027138A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH087585A (ja) * | 1993-12-28 | 1996-01-12 | Sgs Thomson Microelettronica Spa | 不揮発性メモリ用計数終了検出装置 |
| JPH08213803A (ja) * | 1994-10-31 | 1996-08-20 | Texas Instr Inc <Ti> | 高周波信号用スイッチを含む移相器 |
| JPH10285093A (ja) * | 1997-03-31 | 1998-10-23 | Mitsubishi Electric Corp | ダイバーシチ装置及びこの装置を使用した携帯無線機 |
| JP2004282150A (ja) * | 2003-03-12 | 2004-10-07 | Sony Corp | 移相器及びフェーズドアレイアンテナ装置 |
Non-Patent Citations (2)
| Title |
|---|
| MALCZEWSKI A. ET AL: "X-Band RF MEMS Phase Shifters for Phased Array Applications.", IEEE MICROWAVE AND GUIDED WAVE LETTERS., vol. 9, no. 12, 1999, pages 517 - 519, XP000902393 * |
| See also references of EP1865570A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010506548A (ja) * | 2007-12-21 | 2010-02-25 | ビ−エイイ− システムズ パブリック リミテッド カンパニ− | マイクロ波結合器 |
| JP2016171501A (ja) * | 2015-03-13 | 2016-09-23 | 国立大学法人山形大学 | フェーズドアレイアンテナ |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1865570A1 (en) | 2007-12-12 |
| JPWO2006106567A1 (ja) | 2008-09-11 |
| EP1865570A4 (en) | 2008-07-16 |
| US20090027138A1 (en) | 2009-01-29 |
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