CN103956558A - Microwave oscillator based on composite right/left-handed transmission line and used for 2.45 GHz communication - Google Patents
Microwave oscillator based on composite right/left-handed transmission line and used for 2.45 GHz communication Download PDFInfo
- Publication number
- CN103956558A CN103956558A CN201410173953.8A CN201410173953A CN103956558A CN 103956558 A CN103956558 A CN 103956558A CN 201410173953 A CN201410173953 A CN 201410173953A CN 103956558 A CN103956558 A CN 103956558A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- microstrip line
- composite right
- handed transmission
- line
- 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
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
The invention discloses a microwave oscillator based on a composite right/left-handed transmission line and used for 2.45 GHz communication. The microwave oscillator comprises an amplifying circuit, a feedback network, a frequency selective network and an amplitude stabilization link. The amplitude stabilization link is completed through the non-linearity of a transistor. A zero-order resonator (ZOR) based on the composite right/left-handed transmission line is applied to a resonance network. Compared with an ordinary resonator, the zero-order resonator is small in size, high in quality factor and low in phase noise.
Description
Technical field
The zeroth order resonant oscillator that the present invention relates to a kind of 2.45GHz of working in communication, has size little, and the advantage of high stability low phase noise, belongs to active microwave device field.
Background technology
Microwave oscillator, as the signal source of frequency translation and generation carrier wave, is the core component of communication system.2.45GHz frequency range is widely used ISM band, can be used for the technical fields such as high-speed local area network, wireless sensor network, Bluetooth system, Wireless USB, and invention has great importance for the microwave oscillator of 2.45GHz frequency range.Design oscillator needs high quality factor and low phase noise, also has the miniaturization of structure.
Current, have and much utilize transmission line or dielectric resonator to design oscillator.Along with the rise of left-handed materials, the Zero order resonator being made up of composite right/left-handed transmission line has unique advantage: the resonance frequency of Zero order resonator only depends on L, the C value of resonant element, irrelevant with the length of resonator, miniaturization that like this can implementation structure; Can pass through Slow-wave effect, improve the quality factor q of oscillator, and the phase noise of oscillator be relevant with the value of quality factor with stability.Therefore adopt composite right/left-handed transmission line can realize the characteristics such as small size, high stability, low phase noise as the Zero order resonator of oscillator, and be easy to integratedly, can be applied in microwave circuit.
Summary of the invention
The object of this invention is to provide the novel microwave oscillator that a kind of frequency of oscillation is 2.45GHz, and adopt the Zero order resonator of interdigitated composite right/left-handed transmission line and the coupling of conventional transmission line as the resonant tank of oscillator, reduce oscillator moulded dimension, reduce phase noise, and improved frequency stability.
The present invention is achieved in that a kind of size is little, and high stable low noise composite right/left-handed transmission line oscillator comprises:
Zero order resonator is formed by interdigitated composite right/left-handed transmission line and the coupling of conventional transmission line, its structure comprises: input port, composite right/left-handed transmission line, conventional transmission line, output port, medium substrate, input port is connected with the two ends of conventional transmission line respectively with output port, interdigitated composite right/left-handed transmission line is made up of interdigital capacitor and closed stub, and closed stub end is processed with a grounding through hole;
Triode, this transistor base is connected to the first capacitance (C
1), the first resistance (R2) and the second resistance (R3), the collector electrode of triode is received the 5th microstrip line, and the emitter of triode is connected to the 6th microstrip line, and the first capacitance is by the first microstrip line and first terminal resistance (R1) ground connection;
The first branch road being become with the first biasing resistor (R4) by the first electric capacity (C2), this first branch road one end is received the 5th microstrip line, other end resistance terminal ground connection, electric capacity termination DC power supply;
By the second microstrip line, the first shunt capacitance (C4), the 3rd microstrip line, the 4th microstrip line, the second terminal resistance (R6) ground connection forms the second branch road, and the second branch road one end is connected on the collector electrode of triode, the 4th microstrip line open circuit;
Form the 3rd branch road by the second biasing resistor (R5) and the second shunt capacitance (C3), this 3rd branch road one end ground connection, the other end is received the 6th microstrip line.
Related content in technique scheme is explained as follows:
1,, in such scheme, in described zeroth order resonant oscillator, triode model is Onsemi ' s MMBR941.
2, in such scheme, in described zeroth order resonant oscillator, the dielectric constant of medium substrate is 2.65, and thickness is 1mm, and loss tangent is 0.0027.
3, in such scheme, in described zeroth order resonant oscillator, the first microstrip line that width is 2.7mm is conventional transmission line, the second microstrip line, the 3rd microstrip line, the 4th microstrip line, their length is respectively 13.5mm, 2.4mm, 6.9mm, 24mm, resistance value is all 50 Ω, and width is the 5th microstrip line of 0.728mm and the length of the 6th microstrip line is 18.8mm, adopts the resistance value of the long high impedance microstrip line for λ/4 to be 100 Ω.
4, in such scheme, in described zeroth order resonant oscillator, the interdigitated composite right/left-handed transmission line (2) of Zero order resonator, interdigital length is 10.2mm, wide is 0.3mm, closed stub total length is 17.7mm, and grounding through hole radius is 0.35mm, and interdigital gap is 0.3mm, interdigital logarithm is 5, be of a size of 12.4mm*5.7mm, conventional transmission line 3 is of a size of 13.5mm*2.7mm, and the distance between the first microstrip line and interdigitated composite right/left-handed transmission line is 0.12mm.
Technique effect of the present invention is: novel small size microwave oscillator provided by the invention, adopts the Zero order resonator of interdigitated composite right/left-handed transmission line and the coupling of conventional transmission line as the resonant tank of oscillator.This oscillator is in the time of 804.7mV, and stable oscillation stationary vibration is at 2.45GHz, and the phase noise in the time departing from centre frequency 10kHz is-102dBc/Hz that the phase noise while departing from 100kHz is-122dBc/Hz that first harmonic power output reaches 7.87dBm.
Brief description of the drawings
Fig. 1 is the circuit structure signal of novel microwave oscillator provided by the invention.
Fig. 2 is structure chart and the equivalent electric circuit of Zero order resonator.
Fig. 3 is the theory diagram of oscillator of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1,2 and embodiment, the invention will be further described:
A kind of size is little, and high stable low noise composite right/left-handed transmission line oscillator comprises:
As shown in Figure 1, Zero order resonator is formed by interdigitated composite right/left-handed transmission line (2) and conventional transmission line (3) coupling, and its structure comprises: input port (1), composite right/left-handed transmission line (2), conventional transmission line (3), output port (4), medium substrate (5).Input port (1) is connected with the two ends of conventional transmission line (3) respectively with output port (4).Interdigitated composite right/left-handed transmission line 2 is made up of interdigital capacitor (12) and closed stub (13), and closed stub end is processed with a grounding through hole (14).
Triode (11), this triode model is Onsemi ' s MMBR941, base stage is connected to the first capacitance (C
1), the first resistance (R2) and the second resistance (R3).The collector electrode of triode is received the 5th microstrip line (9), and the emitter of triode is connected to the 6th microstrip line (10).The first capacitance is by the first microstrip line (3) and first terminal resistance (R1) ground connection.
The first branch road being become with the first biasing resistor (R4) by the first electric capacity (C2), this first branch road one end is received the 5th microstrip line (9), other end resistance terminal ground connection, electric capacity termination DC power supply.
By the second microstrip line (6), the first shunt capacitance (C4), the 3rd microstrip line (7), the 4th microstrip line (8), the second terminal resistance (R6) ground connection forms the second branch road, and the second branch road one end is connected on the collector electrode of triode, the 4th microstrip line (8) open circuit.
Form the 3rd branch road by the second biasing resistor (R5) and the second shunt capacitance (C3), this 3rd branch road one end ground connection, the other end is received the 6th microstrip line (10).
Above-mentioned zeroth order resonant oscillator, the dielectric constant of medium substrate 5 is 2.65, and thickness is 1mm, and loss tangent is 0.0027.
Above-mentioned zeroth order resonant oscillator, the first microstrip line that width is 2.7mm is conventional transmission line 3, the second microstrip line 6, the three microstrip line 7, the four microstrip lines 8, their length is respectively 13.5mm, 2.4mm, 6.9mm, 24mm, resistance value is all that the 5th micro-length with 9 lines and the 6th microstrip line 10 that 50 Ω width are 0.728mm is 18.8mm, adopts the resistance value of the long high impedance microstrip line for λ/4 to be 100 Ω.
Above-mentioned zeroth order resonant oscillator, capacitance C1 is 1.65pf, the first resistance R 2 and the second resistance R 3 are respectively 3.5K Ω, 1K Ω, the first capacitor C 2 is 10np, the first biasing resistor R4 and the second biasing resistor are respectively 10 Ω, 120 Ω, the first shunt capacitance C4 and the second shunt capacitance C3 are respectively 10pf, 40pf, and first terminal resistance R 1 and the second terminal resistance R6 are 50 Ω.
The present embodiment foregoing specific explanations is as follows:
A kind of size is little, and high stable low noise composite right/left-handed transmission line oscillator, comprising: Zero order resonator, triode, feedback network, fixed ampllitude link.Input output 50 ohms impedance match.Fig. 3 is the theory diagram of oscillator of the present invention, and the output voltage wherein representing with input voltage is:
（1）
Oscillator requires in the time of starting of oscillation:
T=AF>1 （2）
A and F are respectively gain amplifier and the feedback factor of not being with feedback, serve as feedback network in conjunction with the Zero order resonator resonator of design as resonant tank, and under specific frequency, the denominator of above formula is 0, and just can obtain at input voltage is that 0 o'clock output voltage is non-vanishing,
Thereby formation oscillator, fixed ampllitude link is completed by the non-linear of triode.High Q resonant tank is to reduce oscillator phase and improve one of important measures of frequency stability, the present invention uses the Zero order resonator that adopts interdigitated composite right/left-handed transmission line and the coupling of conventional transmission line as the resonant tank of oscillator, the structure chart of this Zero order resonator and equivalent electric circuit are as shown in Figure 2, its cellular construction is made up of interdigital capacitor and closed stub, forms respectively the series capacitance of left hand character
and shunt inductance
, the stray inductance that transmission line itself exists
and electric capacity
the right hand characteristic of transmission line is provided.The propagation constant of Zero order resonator is defined as:
（3）
Wherein,
In the time of β >0, resonator works is in right hand frequency range; When β <0, be operated in left hand frequency range; In the time of β=0, be the resonance frequency of resonator.By regulating interdigital length and logarithm, the length of closed stub and width, the coupling distance of composite right/left-handed transmission line and conventional transmission line, regulates the size of resonance frequency and quality factor.Thereby can being obtained, oscillator lowly makes an uproar mutually, high stability.
Above-mentioned oscillator technical indicator is through emulation, and size is little, and frequency stability is high, and the phase noise in the time departing from centre frequency 10kHz is-102dBc/Hz that the phase noise while departing from 100kHz is-122dBc/Hz that first harmonic power output reaches 7.87dBm.
Claims (5)
1. the microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication, it is characterized in that: structure comprises input port (1), composite right/left-handed transmission line (2), conventional transmission line (3), output port (4), medium substrate (5), input port (1) is connected with the two ends of conventional transmission line (3) respectively with output port (4);
Zero order resonator is formed by interdigitated composite right/left-handed transmission line (2) and conventional transmission line (3) coupling, interdigitated composite right/left-handed transmission line (2) is made up of interdigital capacitor (12) and closed stub (13), and closed stub end is processed with a grounding through hole (14);
Triode (11), this transistor base is connected to the first capacitance (C
1), the first resistance (R2) and the second resistance (R3), the collector electrode of triode is received the 5th microstrip line (9), and the emitter of triode is connected to the 6th microstrip line (10), and the first capacitance is by the first microstrip line (3) and first terminal resistance (R1) ground connection;
The first branch road being become with the first biasing resistor (R4) by the first electric capacity (C2), this first branch road one end is received the 5th microstrip line (9), other end resistance terminal ground connection, electric capacity termination DC power supply;
By the second microstrip line (6), the first shunt capacitance (C4), the 3rd microstrip line (7), the 4th microstrip line (8), the second terminal resistance (R6) ground connection forms the second branch road, and the second branch road one end is connected on the collector electrode of triode, the 4th microstrip line (8) open circuit;
Form the 3rd branch road by the second biasing resistor (R5) and the second shunt capacitance (C3), this 3rd branch road one end ground connection, the other end is received the 6th microstrip line (10).
2. the microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication according to claim 1, is characterized in that: in described zeroth order resonant oscillator, triode model is Onsemi ' s MMBR941.
3. the microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication according to claim 1, it is characterized in that: in described zeroth order resonant oscillator, the dielectric constant of medium substrate (5) is 2.65, and thickness is 1mm, and loss tangent is 0.0027.
4. the microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication according to claim 1, it is characterized in that: in described zeroth order resonant oscillator, the first microstrip line that width is 2.7mm is conventional transmission line (3), the second microstrip line (6), the 3rd microstrip line (7), the 4th microstrip line (8), their length is respectively 13.5mm, 2.4mm, 6.9mm, 24mm, resistance value is all 50 Ω, width is the 5th microstrip line (9) of 0.728mm and the length of the 6th microstrip line (10) is 18.8mm, adopt the resistance value of the long high impedance microstrip line for λ/4 to be 100 Ω.
5. the microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication according to claim 1, it is characterized in that: in described zeroth order resonant oscillator, the interdigitated composite right/left-handed transmission line (2) of Zero order resonator, interdigital length is 10.2mm, wide is 0.3mm, closed stub total length is 17.7mm, grounding through hole radius is 0.35mm, interdigital gap is 0.3mm, interdigital logarithm is 5, be of a size of 12.4mm*5.7mm, conventional transmission line 3 is of a size of 13.5mm*2.7mm, distance between the first microstrip line (3) and interdigitated composite right/left-handed transmission line (2) is 0.12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173953.8A CN103956558B (en) | 2014-04-29 | 2014-04-29 | Microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173953.8A CN103956558B (en) | 2014-04-29 | 2014-04-29 | Microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103956558A true CN103956558A (en) | 2014-07-30 |
| CN103956558B CN103956558B (en) | 2016-10-05 |
Family
ID=51333806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410173953.8A Active CN103956558B (en) | 2014-04-29 | 2014-04-29 | Microwave oscillator based on composite right/left-handed transmission line for 2.45GHz communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103956558B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158494A (en) * | 2014-09-08 | 2014-11-19 | 王少夫 | Oscillator circuit |
| CN108574465A (en) * | 2018-06-27 | 2018-09-25 | 成都嘉纳海威科技有限责任公司 | A kind of high efficiency F classes stacking power amplifier based on left-and-right-hand transmission line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466197U (en) * | 2009-07-23 | 2010-05-12 | 西安空间无线电技术研究所 | Composite left-hand and right-hand coupled transmission line resonator |
| CN102386847A (en) * | 2011-09-21 | 2012-03-21 | 张家港保税区灿勤科技有限公司 | Dielectric resonator oscillator with high stability and low noise |
-
2014
- 2014-04-29 CN CN201410173953.8A patent/CN103956558B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466197U (en) * | 2009-07-23 | 2010-05-12 | 西安空间无线电技术研究所 | Composite left-hand and right-hand coupled transmission line resonator |
| CN102386847A (en) * | 2011-09-21 | 2012-03-21 | 张家港保税区灿勤科技有限公司 | Dielectric resonator oscillator with high stability and low noise |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158494A (en) * | 2014-09-08 | 2014-11-19 | 王少夫 | Oscillator circuit |
| CN108574465A (en) * | 2018-06-27 | 2018-09-25 | 成都嘉纳海威科技有限责任公司 | A kind of high efficiency F classes stacking power amplifier based on left-and-right-hand transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103956558B (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106877819A (en) | Voltage controlled oscillator based on compound resonator | |
| WO2023061089A1 (en) | Radio frequency power amplifier applied to 5g-sub6g frequency band communication system | |
| WO2023019909A1 (en) | Harmonic suppression circuit, power amplifier module, communication device, and communication system | |
| TWI549421B (en) | Voltage controlled oscillator | |
| CN103475309A (en) | Constant tuning gain voltage-controlled oscillator | |
| CN102355222A (en) | Impedance matching system and impedance matching device | |
| CN105262449A (en) | DC bias circuit of X-waveband GaN HEMT power device | |
| CN103956558A (en) | Microwave oscillator based on composite right/left-handed transmission line and used for 2.45 GHz communication | |
| CN102638237A (en) | Microwave balanced variable filter | |
| CN102386847A (en) | Dielectric resonator oscillator with high stability and low noise | |
| CN204721314U (en) | A kind of high-frequency constant temperature crystal oscillator | |
| CN202231693U (en) | Dielectric resonator having high stability and low noise | |
| CN216437154U (en) | Dual-band voltage-controlled oscillator, super-regenerative receiver, and communication device | |
| CN102739161A (en) | Ring resonator with adjustable broadband frequency | |
| CN109921807A (en) | A kind of broadband chaotic oscillating circuit | |
| CN104333339A (en) | Adjustable transformer | |
| CN204304928U (en) | A kind of voltage-controlled oscillator circuit | |
| CN203352538U (en) | Voltage-controlled oscillator circuit | |
| JP5597998B2 (en) | High frequency double wave oscillator | |
| Yeung et al. | BPFs with parametrically compensated passband insertion loss and selectivity | |
| CN203180025U (en) | Strip line tunable filter | |
| CN103151583A (en) | Folding multimode slotted patch microstrip bandpass filter | |
| CN110971200A (en) | Novel dual-band efficient F-type power amplifier | |
| CN203984365U (en) | A kind of adjustable printed panel transformer | |
| CN203761332U (en) | Gigahertz base frequency low-phase noise oscillation circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |