Pub Date : 2001-10-15DOI: 10.1109/EUMA.2001.338988
M. Chatras, P. Blondy, D. Cros, S. Verdeyme, P. Guillon, O. Vendier, C. Drevon, J. Cazaux
In this article, the design of a two poles micro-strip micro-machined planar filter is presented at 28 GHz with a 5% bandwidth with an optimization methodology of the quality factor in order to decrease losses. Furthermore this article presents a new connection between the resonators in micro-strip technology and the coplanar accesses. We propose a slot in the quarter wave-length resonator which is directly connected to coplanar input lines. The coplanar to micro-strip transition between the circuit and external accesses is included as a part of the synthesis. This technique is quite easy to achieve and permit to win one step in a filter design.
{"title":"Design of a Micromachined Band-Pass Filter with Insertion of the Coplanar Accesses in the Resonator","authors":"M. Chatras, P. Blondy, D. Cros, S. Verdeyme, P. Guillon, O. Vendier, C. Drevon, J. Cazaux","doi":"10.1109/EUMA.2001.338988","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338988","url":null,"abstract":"In this article, the design of a two poles micro-strip micro-machined planar filter is presented at 28 GHz with a 5% bandwidth with an optimization methodology of the quality factor in order to decrease losses. Furthermore this article presents a new connection between the resonators in micro-strip technology and the coplanar accesses. We propose a slot in the quarter wave-length resonator which is directly connected to coplanar input lines. The coplanar to micro-strip transition between the circuit and external accesses is included as a part of the synthesis. This technique is quite easy to achieve and permit to win one step in a filter design.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114613543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.339185
S. Vajha, P. Shastry
In this paper, a novel design approach and measured results of a compact proximity coupled active integrated antenna (PCAIA) are presented. A new type of antenna feed structure is proposed. A single self-biased (through the RF port), two-stage low noise amplifier has been integrated with a proximity coupled patch antenna having a new feed structure. The proposed approach is useful in the design of compact PCAIA with good radiation characteristics for applications in microwave wireless systems.
{"title":"A Novel Proximity Coupled Active Integrated Antenna","authors":"S. Vajha, P. Shastry","doi":"10.1109/EUMA.2001.339185","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339185","url":null,"abstract":"In this paper, a novel design approach and measured results of a compact proximity coupled active integrated antenna (PCAIA) are presented. A new type of antenna feed structure is proposed. A single self-biased (through the RF port), two-stage low noise amplifier has been integrated with a proximity coupled patch antenna having a new feed structure. The proposed approach is useful in the design of compact PCAIA with good radiation characteristics for applications in microwave wireless systems.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115460525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.338909
N. Watson, C. Caddick, T. Gokdemir, E. Bayar
The development of Mesh (multipoint to multipoint) technology for broadband wireless access networks has brought a need for high performance low cost millimeter wave transmit and receive modules (TRMs). This paper describes the design and realization of millimetric TRMs suitable for such applications. The module is based on commercially available MMICs with a number of key design features introduced as part of the manufacturing process. These features include a multilayer circuit topology which combines the DC interconnect with the RF circuit, channelisation and screening of the RF functional blocks, circuit cavities and module integration with waveguide to microstrip transitions. This paper describes the specification of the TRM results achieved and draws conclusions about the viability of low cost manufacture of such devices.
{"title":"Millimetre Wave Transmit and Receive Module for Broadband Mesh Networks","authors":"N. Watson, C. Caddick, T. Gokdemir, E. Bayar","doi":"10.1109/EUMA.2001.338909","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338909","url":null,"abstract":"The development of Mesh (multipoint to multipoint) technology for broadband wireless access networks has brought a need for high performance low cost millimeter wave transmit and receive modules (TRMs). This paper describes the design and realization of millimetric TRMs suitable for such applications. The module is based on commercially available MMICs with a number of key design features introduced as part of the manufacturing process. These features include a multilayer circuit topology which combines the DC interconnect with the RF circuit, channelisation and screening of the RF functional blocks, circuit cavities and module integration with waveguide to microstrip transitions. This paper describes the specification of the TRM results achieved and draws conclusions about the viability of low cost manufacture of such devices.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123076955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.338986
Z. N. Chen, M. Chia
A new balanced feeding structure is experimentally presented to enhance the radiation performance of a microstrip antenna. The measurements have demonstrated that across a well-matched impedance bandwidth the proposed microstrip antenna is capable of providing stable radiation patterns with low cross-polarized radiation.
{"title":"Microstrip Antenna with a New Feeding Structure","authors":"Z. N. Chen, M. Chia","doi":"10.1109/EUMA.2001.338986","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338986","url":null,"abstract":"A new balanced feeding structure is experimentally presented to enhance the radiation performance of a microstrip antenna. The measurements have demonstrated that across a well-matched impedance bandwidth the proposed microstrip antenna is capable of providing stable radiation patterns with low cross-polarized radiation.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116671051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.338907
D. Randell, P. Gardner, P. Hall
When designing the front end of a two way single antenna communication system, the separation of the transmit power from the receiver components is of utmost importance. Without such separation many problems are encountered, for example the transmit signal causing feedback into the system or the transmit power saturating the receiver components possibly to the point of destroying them. High power into a sensitive low noise amplifier can be disastrous. The task is made all the more difficult when the communication system is full duplex. Generally filters are used to separate the transmit signal from the receiver port. However in small communication devices such as mobile handsets, where size is important, ceramic filters are very bulky and take up unwanted space. With the increasing consumer demand for smaller, neater, compact mobile phones the inclusion of a ceramic filter is undesirable to the designers especially the product designers of the façade. This paper looks at an alternative design for the diplexer which uses some of the inherent characteristics of a patch antenna, with transmission line cancellers, further increasing the isolation.
{"title":"Novel Canceller Diplexer for Future Mobile Handsets","authors":"D. Randell, P. Gardner, P. Hall","doi":"10.1109/EUMA.2001.338907","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338907","url":null,"abstract":"When designing the front end of a two way single antenna communication system, the separation of the transmit power from the receiver components is of utmost importance. Without such separation many problems are encountered, for example the transmit signal causing feedback into the system or the transmit power saturating the receiver components possibly to the point of destroying them. High power into a sensitive low noise amplifier can be disastrous. The task is made all the more difficult when the communication system is full duplex. Generally filters are used to separate the transmit signal from the receiver port. However in small communication devices such as mobile handsets, where size is important, ceramic filters are very bulky and take up unwanted space. With the increasing consumer demand for smaller, neater, compact mobile phones the inclusion of a ceramic filter is undesirable to the designers especially the product designers of the façade. This paper looks at an alternative design for the diplexer which uses some of the inherent characteristics of a patch antenna, with transmission line cancellers, further increasing the isolation.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125891846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.339175
Stéphane Picard, K. Hettak, M. Stubbs, J. Wight
This paper presents a novel application coplanar waveguide (CPW) series stubs. A 1-bit CPW phase shifter for LMCS applications (28 GHz) is designed. Switching between two filters with appropriate phase characteristics allows the introduction of a phase shift in the signal. This low loss and compact novel phase shifter easily accommodates the required 2 GHz bandwidth of LMCS with insertion losses of less than 0.8 dB. Being more compact than the traditional delay line, it is an attractive alternative o existing approaches, especially if combinged with potential micromachined (MEMS) switches.
{"title":"Novel CPW-based Phase Shifter for LMCS/LMDS Applications","authors":"Stéphane Picard, K. Hettak, M. Stubbs, J. Wight","doi":"10.1109/EUMA.2001.339175","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339175","url":null,"abstract":"This paper presents a novel application coplanar waveguide (CPW) series stubs. A 1-bit CPW phase shifter for LMCS applications (28 GHz) is designed. Switching between two filters with appropriate phase characteristics allows the introduction of a phase shift in the signal. This low loss and compact novel phase shifter easily accommodates the required 2 GHz bandwidth of LMCS with insertion losses of less than 0.8 dB. Being more compact than the traditional delay line, it is an attractive alternative o existing approaches, especially if combinged with potential micromachined (MEMS) switches.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115196179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.339183
P. Molchanov, Pavel Mulyar, Y. Podobna, V. Checkotun
The principles of operation of new microwave sensors on circuits with negative resistance based - negasensors has been presented. Several negasensors' circuits with capacitive and inductive resistance have been described. Patents protect all presented circuits of negasensors. It was shown that negative active resistance could be used for sensitivity increasing as well as negative inductance and capacitance. Negasensors have high sensitivity, noise immunity and could be manufactured as a single chip without wireless signal transfer. It is necessary to notice that negasensor's sensitivity increases along with the frequency. Prospects of negasensors application at distributed multipoint-measuring systems for ecological monitoring and remote measurements are described. Negasensors could be also applied for microwave optic transformation of signals in telecommunicational networks.
{"title":"Prospect of Microwave Negasensors Application for Ecological Monitoring","authors":"P. Molchanov, Pavel Mulyar, Y. Podobna, V. Checkotun","doi":"10.1109/EUMA.2001.339183","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339183","url":null,"abstract":"The principles of operation of new microwave sensors on circuits with negative resistance based - negasensors has been presented. Several negasensors' circuits with capacitive and inductive resistance have been described. Patents protect all presented circuits of negasensors. It was shown that negative active resistance could be used for sensitivity increasing as well as negative inductance and capacitance. Negasensors have high sensitivity, noise immunity and could be manufactured as a single chip without wireless signal transfer. It is necessary to notice that negasensor's sensitivity increases along with the frequency. Prospects of negasensors application at distributed multipoint-measuring systems for ecological monitoring and remote measurements are described. Negasensors could be also applied for microwave optic transformation of signals in telecommunicational networks.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115569108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.339004
K. Maeda, E. Taniguchi, M. Ono, N. Suematsu, T. Takagi
A novel even harmonic type Si-MMIC active balanced mixer using Common Emitter Common Collector Transistor Pair (CECCTP) is proposed. The mixer configuration has two technical features; a low second order distortion and a low second harmonic of LO. These features are confirmed by the simulated results and the measured results. Characteristics of the direct conversion mixer are also described with an experimental approach.
{"title":"A 2GHz Band Even Harmonic Type Si-MMIC Active Balanced CECCTP Mixer","authors":"K. Maeda, E. Taniguchi, M. Ono, N. Suematsu, T. Takagi","doi":"10.1109/EUMA.2001.339004","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339004","url":null,"abstract":"A novel even harmonic type Si-MMIC active balanced mixer using Common Emitter Common Collector Transistor Pair (CECCTP) is proposed. The mixer configuration has two technical features; a low second order distortion and a low second harmonic of LO. These features are confirmed by the simulated results and the measured results. Characteristics of the direct conversion mixer are also described with an experimental approach.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122362404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.338964
G. Prigent, É. Rius, F. Le Pennec, S. Le Maguer, Marcel Le Floch., M. Ney
A new topology of narrowband band-pass filter based on modification of classical tapped-line interdigital coupled lines filters is presented. From a sensitivity point of view, this new topology appears as very attractive when designing very narrowband filters. Theoretical and experimental results in coplanar technology are presented. The theoretical study is carried out by both a circuit modelling approach (HP-MDS) and a full wave analysis (Agilent-Momentum).
{"title":"A New Coplanar Band-pass Filter Topology For Improving The Control of Narrowband Band-pass Filter Response.","authors":"G. Prigent, É. Rius, F. Le Pennec, S. Le Maguer, Marcel Le Floch., M. Ney","doi":"10.1109/EUMA.2001.338964","DOIUrl":"https://doi.org/10.1109/EUMA.2001.338964","url":null,"abstract":"A new topology of narrowband band-pass filter based on modification of classical tapped-line interdigital coupled lines filters is presented. From a sensitivity point of view, this new topology appears as very attractive when designing very narrowband filters. Theoretical and experimental results in coplanar technology are presented. The theoretical study is carried out by both a circuit modelling approach (HP-MDS) and a full wave analysis (Agilent-Momentum).","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122583140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1109/EUMA.2001.339098
F. Peñaranda-Foix, M. Ferrando-Bataller
The application of the circuit theory in open problems is a technique that is not very extended. Basically it has been applied, with excellent results, in closed problems like wave-guides, where the definition of the admittance and impedance matrices is very extended. This paper tries to probe the great benefits of the circuital theory in open problems.
{"title":"Circuital Analysis of Open Space Scattering Problems","authors":"F. Peñaranda-Foix, M. Ferrando-Bataller","doi":"10.1109/EUMA.2001.339098","DOIUrl":"https://doi.org/10.1109/EUMA.2001.339098","url":null,"abstract":"The application of the circuit theory in open problems is a technique that is not very extended. Basically it has been applied, with excellent results, in closed problems like wave-guides, where the definition of the admittance and impedance matrices is very extended. This paper tries to probe the great benefits of the circuital theory in open problems.","PeriodicalId":207696,"journal":{"name":"2001 31st European Microwave Conference","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122767791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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