TWI301683B - An ultra wide band (uwb) filter with wide stopband - Google Patents

Description

1301683, IX, invention: [Technical field of the invention] The present invention relates to a filter, and more particularly to an ultra-wideband filter with wide stop band and fast attenuation, which can be applied to ultra-wideband In a wireless communication system. [Prior Art] The main goals of wireless communication today include high speed, power saving, low φ transmit power and low cost. The current wireless local area network (WLAN) and Bluetooth systems will not continue to meet the demand for the transmission of large amounts of digital data. On the other hand, in view of human attention to health issues; the lack of energy and line electromagnetic waves will be harmful to human health; therefore, wireless communication systems with low transmission power are currently the most urgently needed. In a general wireless communication system, a receiver is taken as an example. The RF circuit is located at the front end of the transceiver system. The RF signal is received via the antenna (Antenna), and then provided by the Filter, Low Noise Amplification (LNA), and the Local Vibration by the Electric Diffuser (VC0). In the test (4), the frequency is down-converted to the intermediate frequency signal (IFSignal), and finally input to the signal processor and converted into the required fundamental frequency information. At the end of the circuit, the filter is usually located at the back end of the antenna. Its main purpose is to filter unnecessary shackles, and to send some of the news, and to block other H filters 1 § is also a key passive component. Taking mobile phones as an example, passive components account for nearly 05% of the area on the motherboard, and the filter is a key TL for the fortunate to have a stomach value. Because the domain wave rotatory effect will indirectly affect the accuracy and distortion rate of the back-end 6 1301683 circuit when processing signals, it can be seen that the quality of the filter frequency characteristics will determine the quality of the wireless communication system. This goal can be achieved in order to provide a wireless communication system 'Ultra Wide Band (UWB) system with high-speed transmission capability and low transmission power. The Overclocking System is a new wireless personal area network (wpAN) technology standard. UWB's spectrum range is very wide, from 3432MHz to l〇296MHz, as a unit of one frequency band, the spectrum is cut into 5 channels (Ch_ei), which can be used for data transmission at speed and up to 5〇. 〇MbpS). In the UWB system set up by the Federal Communications Commission (FCC), the range of the frequency of the rabbits must be between s. In order to meet the requirements of the fresh front end of the UWB RF front-end circuit, many active and passive components need to be redesigned, especially the most valuable functional RF passive components - chopper. In the traditional ^ line communication system, such as Qing Xie 1 / A ride with the blue buds. Filters are often used to construct a narrow-band (Narrow band) frequency response or to design a multi-frequency response chopper. In order to comply with the frequency response of UWB, the traditional narrowband filter is no longer applicable. There is a need to redesign a ferrite with ultra-wideband characteristics. In order to solve the above problems, it is desirable to provide an ultra-wideband filter with fast attenuation to overcome the disadvantages of the prior art. The job is the reason, the towel invites people to carefully test and study the 'and the spirit of the handle' and finally researched _ the physical structure of the resonator itself to achieve the elimination of the multiplier and the use of transmission zero to improve the stop band response outside the passband. 13〇1683 [Summary of the Invention] Zhong Yu is on the "Technology", which provides a wide-bandwidth and fast-reducing ultra-wideband filter, which can be used in ultra-wideband wireless communication Li Tongzhong. The purpose of this ^ is in the amount of supply _ material width (four) city speed deflation super wide lin = change =!? The physical structure of the vibrator itself to eliminate the frequency multiplication and the use of transmission v", to improve the stop band response outside the passband. In order to achieve the above object, the present invention provides that it includes at least -[射_埠;%' 埠; one Chu, one brother, one radio frequency, "唬output/input domain, early spoofing connection to the first-_signal::::: Connection: the second RF signal wheel _-the first-resonator minus unit and the so-called ultra-wideband filter of the second-order ultra-wideband filter, the dream of the mountain w 1 heart, see the 絜 as the wide band of the shell '4 first - RF signal Output/input 埠 is used to see the signal feed/in terminal of the ultra-wideband filter

= frequency response of the generation-first passband;: frequency response of the T passband; the fourth generation of the second attenuation unit produces a fading scale: early _ generation-fading scale; the second according to the invention - the frequency of the animal is different from that of the second:, [the frequency of the second passband generated by the first vibration state generated by the hetero-resonance 11, the strong electric-mode makes the second 1301683 generated by the first_ The second passband of the 0 resonator should be near the frequency of the second passband to obtain a passband of a resonator and a resonator of the second resonator. The adjustable pilot length can be adjusted. Wave length change

According to a feature of the invention, the first preferred length is a quarter of a wavelength. According to a feature of the invention, wherein the frequency of the first pass band is changed. According to a feature of the invention, wherein the frequency of the second pass band is changed. According to the present invention, the optimum length of the second attenuation unit of the first-decay element is a quarter-wavelength. According to a feature of the invention, the first attenuation unit of the towel can change the attenuation response center frequency by the can waveguide length. According to a feature of the invention, the second attenuating unit is operative to adjust the pilot wavelength to change the center of the garment response center. According to a feature of the invention, the circuit form of the first resonator and the second resonator is any one of a group consisting of a coaxial line, a microstrip line, a coplanar waveguide line, a slot line and a strip line. The above and other objects, features, and advantages of the present invention will become more apparent and understood by the appended claims. [Embodiment] Although the present invention may be embodied in various forms, the drawings and the description of the present invention are the preferred embodiments of the present invention, and And 4, and are not intended to limit the invention to the specific embodiments described and/or described. A tea chart 1 showing the circuit block (Fig. 1(a)) and structure (Fig. 1(b)) of the ultra-wideband waver with a wide band in accordance with the first embodiment of the present invention Please refer to the section! (_, the schematic diagram of the circuit of the ultra-wideband filter with the π of the first embodiment of the present invention. The ultra-wideband filter with a wide band (10) according to the present invention. The first embodiment comprises a concept system using a substrate 110; - a first radio frequency signal output / a human and a Q - a second radio frequency output material m; - a first attenuation unit (10); a second attenuation unit i3i; a resonant state 140; and a second resonator 141. The substrate no has a first meter from m and a second surface ι2. For ultra-wideband filter excitation with fast decay below 20 GHz, the The substrate 110 can also select a general commercial substrate, a suspension substrate, a ceramic substrate, a glass substrate, a glass fiber substrate, a hydrocarbon ceramic board, a high temperature co-firing, a low temperature co-fired pottery, an iron wire board, and a dragon glass scale. The substrate and the Teflon shout the substrate, wherein the suspended substrate is supported by a substrate In the grounding position, the advantage of using the commercial substrate is that the cost is low, and the material is made. _, in order to effectively integrate the active and passive components to the single substrate to achieve the system single chip kiss gamma, sqc), the substrate 110 can be selected as a floating substrate , a second substrate, a erroneous substrate, and a gallium substrate such as a gallium substrate. Among them, the suspension substrate can be micro-electromechanical (Tianyang 1301683)

A film suspension substrate formed by Electro-Mechanica MEM) technology. The first RF signal output/input port 12 is disposed on the first surface lu of the substrate 110 as a signal feed/in terminal of the ultra-wideband filter 1B having a wide band stop. The second RF signal output/input port 121 is disposed on the first surface U1 of the substrate no as a signal feed/in terminal of the ultra-wideband filter 1〇〇 having a wide band stop. The optimal design impedance of the first RF signal output/input 120 and the second RF signal output/input 121 is Deng Ω, but other characteristic impedance values may be used. If the first RF signal output/input 〇12〇 and the second RF signal output/input 淳U1 are not (10), the other components may be connected as long as an impedance conversion. The characteristic impedance of the first (four) signal output/input 120 and the second radio frequency signal output/input voltage 121 is 1 欧姆 ohm 0. The first-resonator 140 is disposed on the first surface m of the substrate 110, and is electrically Connected to the first attenuation unit 13A and used to generate a frequency response of a first passband. The second resonance nm is disposed on the first surface ω of the substrate 11G, and is electrically coupled to the second attenuation unit 131 in an electromagnetically coupled manner with respect to the first resonator (10). 〇, and respond with the frequency of the domain H passband. The first resonance H 140 and the second resonance $ W1 are parallel to each other in such a manner that the resonators are horizontally parallel, the resonance is parallel, the ship is parallel to the region, or the resonator is parallel to the entire region. In the embodiment of the present invention, the circuit structure of the first resonance H 14G and the second common brain (4) is a miCrostripline structure, so the second surface 11 1301683 112 of the substrate 11 is a ground plane. . It should be noted, however, that the first resonator 140 and the second resonator 141 of the ultra-wideband filter having a wide band can also use other circuit structures as the axis, the microstrip line, and the coplanar wave. Any of a group of conductors, slot lines, and strips. Further, in the embodiment of the invention, the first resonator 14 〇 and the second resonator 141 use a linear resonator structure. However, the first resonance 140 and the resonant state 141 structure may also employ a Step Impedance Resonance (SIR) resonator, a Ring resonator, a Hairpin resonator, and a comb type. (Combline), any one of the group of the group consisting of a patch resonator and a Dielectric resonator (DR). The first attenuation unit 130 is disposed on the first surface lu of the substrate 110, electrically connected to the first RF signal output/input 12〇 and used to generate an attenuation response. The second attenuation unit 131 is disposed on the first surface 111 of the substrate 110, electrically connected to the second RF signal output/input port 121 and used to generate an attenuation response. The first-death unit 130 and the second attenuation unit 131 can be regarded as a device for an open circuit. The open-circuit pile system can generate a transmission zero (transmissi〇nzer〇), which can increase the attenuation rate outside the passband and effectively block the noise interference outside the passband. Please refer to Figures 2(a) and 2(b) for the coupling response of the ultra-wideband filter ι〇〇 with wide band. In the embodiment of the present invention, the RT-Duroid 5880 substrate 110 is used, and the first shot age is 5 rounds/in and out of the stack 12 and the second RF signal output/input 121 is the last. The ten impedance is 5〇·. In order to find the face of the ultra-wideband filter pendulum with wide band stop, the first attenuation unit 13A and the second attenuation unit 131 need to be removed first (l=〇 12 1301683 mm) for discussion. According to the image impedance equation: Z{ = 2 ^〇^z〇〇f · CSC2 θ - (Zoe + ZOQ (1) where 0 is the guided wave length, Ζ. It is the even mode impedance and Zq. It is the odd mode impedance. In the state of Z°e>Z, it can be determined that the first resonator 140 and the second resonator 141 can be designed to be between the seven-thousandths of the three-thousand-thirty-eightths of the waveguides, the most The preferred design length is a quarter of the guided wave length. When the physical length is a quarter of the wavelength, there will be no 2 times the frequency of the mixed wave generation. Therefore, the first wavelength of the first resonator 140 and the second resonator 141, the ultra-wide chopping TM " the first resonator 140 and the second resonator 141 which naturally form a wide band-stop response are fixed to a quarter-wavelength (center frequency is 5.2) In the state of GHz), different 'and z' can be changed. Different passband response changes can be obtained. Referring now to Figure 2(8), when Z〇e=198_ ζ〇〇=67Ω, the first resonator 140 and The second resonator 141 has a width w=〇3 mm and a pitch of one leg. When Zoe-189Ω and ZTO=8GQ, the first-resonator 14G and the second resonator 141 have a w=o.3 mm and The spacing s = 0.2 mm. When ^can and z〇〇=89Q, the width of the /, /, and the second resonator 141 w = 〇 3 faces and the spacing 3l » mw zoe - 176 Ω and Ζ〇 When 〇=96 Ω, the width of the first resonator, 14〇 and the second resonator 141 is w=a3_ and the spacing s=Q4mm. Here, it can be observed that the larger the frequency is, the more the J is. The width 'is therefore adjusted by different pitches, the ultra-wideband test H !(8) with a wide band can be obtained without _ bandwidth. 13 13〇1683 Now refer to the picture 2(b), when Zoe=228Q When Ζ〇〇=74 Ω, the width of the first resonant port 140 and the δ 弟 一 resonator 141 is w=〇.2 mm and the spacing s=0.1 mm. When Zoe=198Q and Ζ00=67 Ω, the first The visibility of the resonator 14 〇 and the second resonator 141 is w=〇.3 mm and the spacing s=〇.imm. When z〇e=176Q and '=61 Q,

k width /, Zhen An and 5 Haidi two resonators 141 have a width w = 0.4 mm and a pitch s = 〇.lmm. When Z 〇 e = 159 _ 〇〇 = 58 CM, the visibility of the first resonator 14 〇 and the first vibration 141 is w = 〇 5 mm and the pitch s = 〇.imm. Here, it can be observed that the variation of the width w affects the variation of the bandwidth and the pass band, because the frequency of the first pass band generated by the first resonator 140 is not generated by the second resonator (4). The frequency of the second passband is such that the first passband generated by the first resonator 14A is close to the frequency of the second pass generated by the second resonator (4) by an enhanced electric-coupled manner. - Wide passband response. By the above two _ _ response

An optimum coupling structure parameter that can be obtained. In the embodiment of the present invention, the structural parameter with the largest maximum and the variation of the passband is: the first resonance, 盥2:, 141 _ w=a3mm, and the spacing s=〇imm is adjusted by 'the silk-n 14G ^ Change the frequency of the first-passband to r, sr guided wave length, which can change the frequency of the ultra-wide wave. Through the words of the ▼, shame can set different centers 14 13〇1683 When the length is a quarter of the wavelength, there will be no double-frequency mixed wave generation, only 3 times the frequency of the mixed wave. Therefore, by using a quarter-wavelength attenuation unit, 131, the transmission zeros of 1 and 3 frequency can be naturally formed, which can improve the attenuation rate outside the passband and effectively block the noise interference outside the passband. An ultra-wideband chopper that achieves high attenuation rates. Now, in view of Fig. 3(a), when the first attenuation unit ls〇 and the second attenuation unit 131 are in a symmetrical structure, the length L=5 7 mm, 6 7 mm and

7.7 mm (width = 〇.3 face and impedance = 1) will produce a transmission zero at 9 sgHz, 8 milk ship and 7.44 GHz, respectively. Therefore, by adjusting the guided wave length of the first attenuating unit (10) and the second attenuating unit 131, the attenuation characteristic on the right side of the pass band can be adjusted. Now observe the 3(b) diagram. When the first attenuation unit 13〇 and the second attenuation unit i3i are in a symmetrical structure, the lengths are changed to L=19 7 _, 217 _, and 23 7 _ (width = 〇.3 coffee) And the impedance = 138 Ω) will produce a doubling (10) fresh spot at 289 GHz, 2 63 GHz and bribe, and triple the transmission zero at 8.67 GHz, 7 89 GHz and 7 2 GHz. Therefore, by adjusting the length of the guided wave which is earlier than the second attenuation and the second attenuation, the attenuation characteristics of the left and right sides of the passband can be directly adjusted. In addition, when the first attenuating unit 13〇盥箆-一早疋(4) and the knowing-mind 兀131 are asymmetric-consistent π, it is possible to design two sets of non-closed transmission zeros. Test ^ 4 Figure 'It shows the ultra-wideband chopper with a wide stop band. The tape of the machine is the same as the structure of the _ 〇〇 ^ ^ ... 4th band extra wide _ waver · the first attenuation 15 1301683 unit 230 and the second attenuation _ __ I am 7 ° 231 fine can be reduced by bending 232, 233 area. Please observe the 5th (a) and (b) figures, and the ultra-wideband filter frequency of the 贝 匕 ▼ ▼ # 应 应 应. It can be observed in Fig. 5(a) that when the guided wave length L· of the smear of the smudges 130, 131, 230, and 231 is 6.7 mm, the crying is 200, and the book is $5 hai, and it is The ultra-wide wave with a wide band has a small frequency difference, and the frequency response of the ultra-wide wave is less than 4 times. Post (a) village bribes, #战(10) 导嶋_217_, purchase, 丨 ultra-wideband filter 200 盥兮 and life, book ▼ .^ See f f-bandwidth filter 100 frequency plasticity difference Not big, but its face borrows from the blue, 曰 (10) one Gan, ^ poor 6.4'. Therefore, by bending the attenuation single 7 〇 ' multiple times, it is possible to achieve an ultra-wide wave cutter which is miniaturized, ancient, and dead. , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , It has the following advantages: high frequency " know b easy 5 weeks full bandwidth, easy to integrate into the semiconductor process and has high industrial value, substrate 2 of various materials: U, ° Broadband: loss and high quality, Can be widely used in ultra-frequency wireless communication systems. Although the present invention has been exemplified by the above-mentioned preferred real-bamboo, it is not intended to limit the various k-shaped counties of the present, the spirit of the face (the fourth) and the inner, when *===(four) wall _ The correction of the coffee style, without damaging the spirit of the invention. Therefore, the protection of the present invention is defined by the scope of the appended claims.

17 1301683 [Simple description of the diagram] r == According to the crane - the circuit block and (b) structure diagram of the ultra-wideband ship with a wide band of the embodiment; the second picture shows the super band with a wide band Broadband _ age response diagram (8) width is the same pitch variation (b) spacing is 〇1_ and different width changes; f buckle is the attenuation unit length (8) L = 5.7, 6 7 and 7 7 (9) l one Μ ", Μ The ultra-wide wave n frequency response diagram of the wide band of 23·7; ^The figure shows the super-wide band with super-__; and ^=4_unit length (b) L=217 miniaturization The frequency response diagram of the ultra-I-frequency filter with a width of π. [Main component symbol description] 100 wide band anti-wideband filter

200 miniaturized ultra-wideband choppers 112, 212 second surface 11〇, 21〇 substrate m, 211 first surface 120, 220 first-radio frequency signal output/input 121, 221 second radio frequency signal Output/input 埠 (10), 珈 first-attenuation unit 131, 231 second attenuation unit 140 240 first-resonator, 141, 241 second resonator 232, 233 bent 18

Claims (1)

1301683月9忮)) Replacement Page 丨 Patent Application Range: An ultra-wideband filter with a wide band, comprising at least one substrate having a first surface and a second surface; first RF signal output The second surface of the substrate is disposed on the first surface of the substrate for use as a signal feed/in port of the ultra-wideband filter with a wide band; a second RF signal output/input is provided on the substrate a surface for use as a signal feed/in port of the ultra-wideband filter with a wide band; 1 an attenuation unit disposed on a first surface of the substrate, the button being connected to the first RF signal output/input埠, which is used to generate an attenuation response; = the second attenuation unit is disposed on the wire (four)-surface, and is lightly connected to the second RF signal output/input, which is used to generate an attenuation response; 11' is disposed on the first surface of the substrate, electrically connected to the first attenuation unit for generating a frequency response of a first passband; and a second resonator is disposed on the first surface of the substrate, Electrically connected to the first-death unit, The frequency response of the first-resonator to the second-passband is substantially parallel to the first-resonator, wherein 9 Μ, the first resonance series is different from the 共振-band ===The frequency of the passband, the frequency of the first ϋ-通▼ of the _sheng is close to the first known frequency material produced by the second resonator by the enhanced electromagnetic light-synchronization method. Resonator and 19 1301683: January #修(more) is replacing the margin of the resonator between the three-conductor wavelength and the seven-decimal wavelength. 2. The ultra-wideband filter with a wide band as described in the scope of the patent application, wherein the substrate is selected from the group consisting of a suspension substrate, a germanium substrate, a gallium arsenide substrate, a ceramic substrate, a glass substrate, a glass fiber substrate, One of a hydrocarbon ceramic substrate, a Teflon substrate, a Teflon glass fiber substrate, and a Teflon ceramic substrate. 3. The ultra-wide beam device with a wide band as described in claim 3, wherein the length of the first resonator and the second resonator is a quarter wavelength. 4. If applying for a wide-width miscellaneous post with a wide stop band as described in the full-time sub-paragraph, wherein the first-resonator can adjust the length of the guided wave to change the frequency of the first pass band. 5. The ultra-wideband and wave device having a wide stop band as claimed in claim </ RTI> wherein the second resonance H adjusts the length of the guided wave to change the frequency of the second pass band. 6 The ultra-wideband filter with a wide band as described in the first paragraph of the patent scope, wherein the first-attenuation single-fused two-tone unit has the best long-wavelength wavelength. : The ultra-wideband filter with a wide band as described in Item 7, wherein the first attenuating single-reading rhyme unit can be reduced in area by bending. The ultra-wideband filter described in Item 1 of the first paragraph, in which the ^ attenuation single (adjustable wavelength variation can be adjusted to respond to the center frequency of the cone. = 糊 丨 丨 所 所 所 所 超a wave filter, wherein the second I minus unit adjusts the length of the guided wave to change the attenuation response center frequency. 20 1301683 10. As described in the scope of the patent application, the wide stop band flute - the favorite - see The ultra-wideband filter, wherein the circuit form of the line, the vibrator and the second resonator is a coaxial cable, a microstrip 24, and an ultra-wideband filter having a wide band as described in item i, wherein = wide resonance depends on the second resonance mechanism structure, light-order impedance resonance, two materials, green, 敎 type recorded!!, _ residual, (four) resonator, = electric resonator and linear resonator Knot