CN101436700A - Microwave low-waveband ultra-minitype matching type PIN diode electrically-tuned attenuator - Google Patents
Microwave low-waveband ultra-minitype matching type PIN diode electrically-tuned attenuator Download PDFInfo
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- CN101436700A CN101436700A CNA2007101352101A CN200710135210A CN101436700A CN 101436700 A CN101436700 A CN 101436700A CN A2007101352101 A CNA2007101352101 A CN A2007101352101A CN 200710135210 A CN200710135210 A CN 200710135210A CN 101436700 A CN101436700 A CN 101436700A
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- pin diode
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- controlled attenuator
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Abstract
The invention discloses a micro-wave low-band ultra-micro matching PIN diode electronically controlled attenuator, which is applied to various microwave systems such as radars, electronic countermeasure, communication and so on, and comprises a transmission line and a bias line led out from the transmission line, wherein a PIN diode is codirectionally connected at N nodes, which have an interval of one fourth wavelength and have the quantity of more than or equal to 2, with the transmission line respectively and then is earthed to ensure that the N PIN diodes are parallelly connected to the transmission line, the PIN diodes at both sides are serially connected with a 50ohm resistor respectively, and circuits are produced on a ceramic substrate. The circuit design achieves good standing wave property and flatter attenuation characteristic and can better improve the matching of input ports; the designed circuits of the electronically controlled attenuator with a micro-wave matching form are produced on the ceramic substrate; the circuits have good consistency, and the micro-wave low-band ultra-micro matching PIN diode electronically controlled attenuator has the advantages of high integration level, small volume, simple structure and so on.
Description
Technical field
The present invention relates to the electrically controlled attenuator used in a kind of microwave communication field, especially a kind of ultra-minitype matching type PIN diode electrically-tuned attenuator that is applicable to microwave low-waveband.
Background technology
The microwave electrically controlled attenuator has been widely used in all kinds of microwave systems such as radar, electronic countermeasures, communication as a kind of controller.Attenuator generally is that big voltage signal is decayed to certain ratio multiple (referring generally to power attenuation), reaches safe or desirable level value, makes things convenient for test job, and especially utilization is extensive in radio frequency and microwave.At present, the electrically controlled attenuator of using in the microwave system mostly is the circuit that PIN diode is formed greatly, generally adopts external form, complex structure, and volume is big, is unfavorable for the integrated of circuit.From stationary wave characteristic, electrically controlled attenuator can be divided into matching type and reflection-type.The reflection-type electricity is transferred reflected energy when decay, and standing-wave ratio is very big, increases along with the increase of attenuation, and matching type standing-wave ratio in attenuation process is almost constant, and stable performance, but realizes that its technical difficulty is bigger.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the shortcoming of prior art, and a kind of integrated level height, the volume ultra-minitype matching type PIN diode electrically-tuned attenuator that is applicable to microwave low-waveband little, simple in structure are provided.
The technical scheme that the present invention solves its technical problem is as follows: a kind of microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator, comprise transmission line and an offset line of drawing from transmission line, it is characterized in that ground connection after quarter-wave N node place more than or equal to 2 connects a PIN diode respectively in the same way at interval on the transmission line, N PIN diode is parallel on this transmission line, connect respectively one 50 ohm resistance of the PIN diode of both sides, and foregoing circuit is made on the ceramic substrate.
Beneficial effect of the present invention is as follows: the electrically controlled attenuator that adopts the microwave matching form, can reach good stationary wave characteristic and more smooth attenuation characteristic, can improve the coupling of input port preferably, the both sides PIN diode of PIN diode in parallel is connected in series one 50 ohm resistance respectively, can absorb reflected wave, improve standing wave, have better stationary wave characteristic, be convenient to combine with other circuit neatly.Designed electrically controlled attenuator circuit is fabricated on the ceramic substrate by the trickle band thin-film technique of ultra micro, the circuit high conformity, have the integrated level height, volume is little and advantages of simple structure and simple, be fit to mass production, production cost reduces greatly, is applicable to all kinds of microwave systems such as radar, electronic countermeasures, communication.
Description of drawings:
Fig. 1 is a circuit theory schematic diagram of the present invention.
Fig. 2 is a circuit layout of the present invention.
Fig. 3 is the test curve figure of the attenuation L-electric current I of embodiment of the invention electrically controlled attenuator.
Embodiment:
Describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments.But the invention is not restricted to given embodiment.
As shown in Figure 1, microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator of the present invention, comprise a transmission line MS and an offset line PZX who draws from transmission line MS, ground connection after quarter-wave 5 node J1, J2, J3, J4, J5 place connect PIN diode D1, a D2, D3, D4, D5 respectively in the same way at interval on the transmission line, 5 PIN diode are parallel on this transmission line, connect respectively one 50 ohm resistance R 1, R5 of the PIN diode D1 of both sides, D5.Among the embodiment, on the transmission line at interval the quantity of the node of quarter-wave strong point can be 2,3,4,5,6 etc. according to the product attenuation and insert the loss specific design and require to decide.
As shown in Figure 2, embodiment illustrated in fig. 11 electrically controlled attenuator circuit is made on the ceramic substrate (not drawing among the figure) by the trickle band thin-film technique of ultra micro.Among the embodiment, ceramic substrate is the alundum (Al ceramic substrate of dielectric constant 9.6, thickness 0.3mm.
Utilize network analyzer E5071B, WYK one 3010B2 power supply, VC9806 universal instrument that electrically controlled attenuator of the present invention is tested, test result is as follows: frequency range (MHz): 650 ~ 1350, insert loss (dB)≤0.71, input vswr≤1.17, output standing-wave ratio≤1.15.Test result is depicted as curve chart, and as shown in Figure 3, curve display is 1GHz in frequency, and electric current is 1.8mA, and attenuation can reach 50dB.
Claims (6)
1, microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator, comprise transmission line and an offset line of drawing from transmission line, it is characterized in that ground connection after quarter-wave N node place more than or equal to 2 connects a PIN diode respectively in the same way at interval on the transmission line, N PIN diode is parallel on this transmission line, connect respectively one 50 ohm resistance of the PIN diode of both sides, and foregoing circuit is made on the ceramic substrate.
2, microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator according to claim 1 is characterized in that the number of nodes of interval quarter-wave strong point on the described transmission line is 5.
3, microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator according to claim 1 is characterized in that the number of nodes of interval quarter-wave strong point on the described transmission line is 2.
4, microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator according to claim 1 is characterized in that the number of nodes of interval quarter-wave strong point on the described transmission line is 3.
5, microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator according to claim 1 is characterized in that the number of nodes of interval quarter-wave strong point on the described transmission line is 4.
6,, it is characterized in that described ceramic substrate is the alundum (Al ceramic substrate of dielectric constant 9.6, thickness 0.3mm according to any described microwave low-waveband ultra-minitype matching type PIN diode electrically controlled attenuator in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101352101A CN101436700A (en) | 2007-11-14 | 2007-11-14 | Microwave low-waveband ultra-minitype matching type PIN diode electrically-tuned attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101352101A CN101436700A (en) | 2007-11-14 | 2007-11-14 | Microwave low-waveband ultra-minitype matching type PIN diode electrically-tuned attenuator |
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| Publication Number | Publication Date |
|---|---|
| CN101436700A true CN101436700A (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101352101A Pending CN101436700A (en) | 2007-11-14 | 2007-11-14 | Microwave low-waveband ultra-minitype matching type PIN diode electrically-tuned attenuator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702330A (en) * | 2014-12-02 | 2015-06-10 | 庄昆杰 | Emergency communication frequency-shifting repeater |
| CN104702307A (en) * | 2014-12-02 | 2015-06-10 | 庄昆杰 | Micro transceiver assembly |
| CN104702334A (en) * | 2014-08-11 | 2015-06-10 | 庄昆杰 | TD-LTE (time division-long term evolution) macro base station indoor extension coverage system and TD-LTE small cell radiofrequency front terminal component |
| CN114124008A (en) * | 2021-11-12 | 2022-03-01 | 中国电子科技集团公司第二十九研究所 | Broadband self-adaptive AGC circuit and assembling method thereof |
-
2007
- 2007-11-14 CN CNA2007101352101A patent/CN101436700A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702334A (en) * | 2014-08-11 | 2015-06-10 | 庄昆杰 | TD-LTE (time division-long term evolution) macro base station indoor extension coverage system and TD-LTE small cell radiofrequency front terminal component |
| CN104702330A (en) * | 2014-12-02 | 2015-06-10 | 庄昆杰 | Emergency communication frequency-shifting repeater |
| CN104702307A (en) * | 2014-12-02 | 2015-06-10 | 庄昆杰 | Micro transceiver assembly |
| CN104702307B (en) * | 2014-12-02 | 2017-03-29 | 庄昆杰 | A kind of miniaturization transceiver module |
| CN104702330B (en) * | 2014-12-02 | 2017-11-14 | 庄昆杰 | A kind of emergency communication shift frequency transponder |
| CN114124008A (en) * | 2021-11-12 | 2022-03-01 | 中国电子科技集团公司第二十九研究所 | Broadband self-adaptive AGC circuit and assembling method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090520 |