CN2341322Y - Voltage controlling phase shifting device - Google Patents
Voltage controlling phase shifting device Download PDFInfo
- Publication number
- CN2341322Y CN2341322Y CN 98203419 CN98203419U CN2341322Y CN 2341322 Y CN2341322 Y CN 2341322Y CN 98203419 CN98203419 CN 98203419 CN 98203419 U CN98203419 U CN 98203419U CN 2341322 Y CN2341322 Y CN 2341322Y
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- CN
- China
- Prior art keywords
- voltage
- phase shifter
- filter
- varactor
- shifting device
- 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 - Fee Related
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- Filters And Equalizers (AREA)
Abstract
Disclosed is a voltage controlling phase shifting device, which is evolved based on Butterworth or Tchebyscheff or an elliptic function filter. A fixed capacitor of a capacitance branch of the filter is replaced by using varactor diodes or by connecting the varactor diodes and the fixed capacitor in series, the control end of voltage is led out from a cathode of the varactor diode, and the filter is evolved into a phase shifter with good performance when the capacitance of the varactor diode follows control voltage to change in a wider range.
Description
The utility model relates to a kind of phase shifter, particularly a kind of voltage-controlled phase shifter.
Existing phase shifter has RC phase shifter, digital phase shifter, magnetic material phase shifter, the synthetic phase shifter of reflection, electronic control type phase shifter.The complex structure that these phase shifters have, the control mode complexity that has, phase shift is discontinuous.
The purpose of this utility model be design a kind of can be continuously, level and smooth adjustment, both-end impedance can mate, insert that loss is little, passband is smooth, phase shift good linearity, control rate phase shifter fast, simple in structure, with low cost.
Utility model has possessed above-mentioned advantage, the exponent number that it is made of electric capacity, inductance element forms more than or equal to 2 high pass or low pass or the conversion of bandpass filtering transmission network, it is characterized in that capacity cell is variable capacitance diode or transfiguration two utmost points are connected with fixed capacitor, varactor diode cathode all links to each other with voltage controling end.
Described transmission network is Bo Tewosi or Chebyshev or elliptic function filter.
The utility model voltage-controlled phase shifter flexible design, can satisfy the different requirements of frequently controlling mutually, have the impedance matching of input and output both-end, insert that loss is low, passband is smooth, control rate is fast, can be continuously, outstanding advantages such as adjustment, phase shift good linearity smoothly, can be applicable to most of communication frequency band, if be applied to the telecommunications transmission equipment, cooperate with other circuit, can accomplish that then power amplifier reduces by 20～30db with nonlinearity product keeping under the constant situation of transmitting power.
Further specify the utility model below in conjunction with accompanying drawing:
π type filter network basic circuit in Fig. 1 first kind Chebyshev band pass filter
Fig. 2 becomes Fig. 1 filter transform an example of phase shifter
This voltage-controlled phase shifter is a pin network, transverse arm by L2 ' (33n), capacitance C2 ' (22p) and variable capacitance diode D2 be in series, it is in full accord that two perpendicular arms constitute parameter, left arm is formed with C1 ', D1 series arm ground connection in parallel by L1 ', right arm is formed with C3=', D3 series arm ground connection in parallel by L3 ', L1 ' and L3 ' are that 18n, C1 ', C3 ' are 100p, article three, variable capacitance diode D1, the D2 on the arm, D3 model are BBY39, and its negative electrode links to each other with control voltage U 0 by 5k resistor R 1, R2, a R3 respectively.C4, C5 are 200p, are respectively the capacitance of input and output.
Present embodiment is replaced the capacitive branch in the transverse arm of pi type filter and two the perpendicular arms with a variable capacitance diode and a fixed capacitor, make the capacitance of this branch road at a time equal the series value of this branch road varactor capacitance and fixed capacitor capacity, because the varactor capacitance amount changes in relative broad range with control voltage, so make filter become the phase shifter of function admirable.
Claims (2)
1, a kind of voltage-controlled phase shifter, the exponent number that is made of electric capacity, inductance element forms more than or equal to 2 high pass or low pass or the conversion of bandpass filtering transmission network, it is characterized in that capacity cell is variable capacitance diode or variable capacitance diode is connected with fixed capacitor, the negative electrode of varactor all links to each other with voltage controling end.
2, voltage-controlled phase shifter as claimed in claim 1 is characterized in that described transmission network can be Bo Tewosi or Chebyshev or elliptic function filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203419 CN2341322Y (en) | 1998-04-13 | 1998-04-13 | Voltage controlling phase shifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203419 CN2341322Y (en) | 1998-04-13 | 1998-04-13 | Voltage controlling phase shifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2341322Y true CN2341322Y (en) | 1999-09-29 |
Family
ID=33960252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98203419 Expired - Fee Related CN2341322Y (en) | 1998-04-13 | 1998-04-13 | Voltage controlling phase shifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2341322Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197580B (en) * | 2006-12-06 | 2011-06-08 | 联想移动通信科技有限公司 | Impedance matching and processing equipment and method thereof |
| US9231549B2 (en) | 2009-08-10 | 2016-01-05 | Mediatek Inc. | Phase shifter and and related load device |
| CN109509940A (en) * | 2018-12-26 | 2019-03-22 | 南京米乐为微电子科技有限公司 | A kind of continuously adjustable analog phase shifter |
-
1998
- 1998-04-13 CN CN 98203419 patent/CN2341322Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197580B (en) * | 2006-12-06 | 2011-06-08 | 联想移动通信科技有限公司 | Impedance matching and processing equipment and method thereof |
| US9231549B2 (en) | 2009-08-10 | 2016-01-05 | Mediatek Inc. | Phase shifter and and related load device |
| CN109509940A (en) * | 2018-12-26 | 2019-03-22 | 南京米乐为微电子科技有限公司 | A kind of continuously adjustable analog phase shifter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |