Pub Date : 2015-12-01DOI: 10.1109/IMARC.2015.7411363
M. Hashmi, Deepak Sharma
This paper presents the design of a quad-band meandered monopole antenna for wireless applications. The design reports a compact antenna with dimension 25*16 mm2 having microstrip feed. The quad-band resonance is obtained by proper meandering of the patch and ground plane. The impedance bandwidth of the designed antenna is 70 MHz for 2.1 GHz CDMA, 40 MHz for 3.53 GHz WiMAX IEEE 802.16, 40 MHz for 4.3 GHz wireless avionics intra-communication, and 6600 MHz for the upper UWB range from 5 GHz to 11.6 GHz. The simulation results match well with the measurements and hence validate the proposed design technique.
{"title":"A meandered rectangular monopole antenna for quad-band applications","authors":"M. Hashmi, Deepak Sharma","doi":"10.1109/IMARC.2015.7411363","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411363","url":null,"abstract":"This paper presents the design of a quad-band meandered monopole antenna for wireless applications. The design reports a compact antenna with dimension 25*16 mm2 having microstrip feed. The quad-band resonance is obtained by proper meandering of the patch and ground plane. The impedance bandwidth of the designed antenna is 70 MHz for 2.1 GHz CDMA, 40 MHz for 3.53 GHz WiMAX IEEE 802.16, 40 MHz for 4.3 GHz wireless avionics intra-communication, and 6600 MHz for the upper UWB range from 5 GHz to 11.6 GHz. The simulation results match well with the measurements and hence validate the proposed design technique.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124189185","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411440
K. Srivastava, Ashwani Kumar, B. Kanaujia
An integrated 23-Cm and Ultra Wide Band (UWB) Antenna is proposed, which has dual band notched characteristics. It is designed for avoiding the interference of frequencies 4.7 GHz and 6.95GHz. Antenna impedance bandwidths are 100MHz (1.2GHz-1.3GHz) and 8.7GHz (3.2GHz-11.9 GHz) that cover the 23-Cm band and entire UWB band. The VSWR in the band notched frequencies are 14 and 5.9 respectively. Measured results are presented to validate the antenna performances. Antenna is designed and fabricated on FR4 substrate with dielectric constant 4.4 and height 1.59mm.
{"title":"Integrated 23-Cm and UWB antenna with dual notched characteristics","authors":"K. Srivastava, Ashwani Kumar, B. Kanaujia","doi":"10.1109/IMARC.2015.7411440","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411440","url":null,"abstract":"An integrated 23-Cm and Ultra Wide Band (UWB) Antenna is proposed, which has dual band notched characteristics. It is designed for avoiding the interference of frequencies 4.7 GHz and 6.95GHz. Antenna impedance bandwidths are 100MHz (1.2GHz-1.3GHz) and 8.7GHz (3.2GHz-11.9 GHz) that cover the 23-Cm band and entire UWB band. The VSWR in the band notched frequencies are 14 and 5.9 respectively. Measured results are presented to validate the antenna performances. Antenna is designed and fabricated on FR4 substrate with dielectric constant 4.4 and height 1.59mm.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115941208","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411377
N. Leder, B. Pichler, Henri Ruotsalainen, Thomas Faseth, H. Arthaber
Recent developments in the field of wireless communications emphasis the urgent need for flexible radio frequency (RF) front ends. Not only a multitude of frequency bands needs to be supported, also modulation formats come in a greater variety and tend to develop at a faster pace. While receiver topologies have been adapted by employing software defined radio (SDR) concepts, translating these developments to transmitters was hindered. Mostly due to the lack of power amplifiers that are energy efficient, linear and broadband at the same time. All digital radio frequency transmitters (DRFTx) are a promising, however, not a very mature option to overcome this issue. While offering the desired flexibility and potential energy efficient operation, these setups exhibit relatively long memory effects which also result in nonlinear inter symbol interference (nISI). In this paper it is demonstrated that the observed nonlinear memory effects, dominantly caused by the need for a reflective reconstruction filter, can be modeled reliably by a lookup table (LUT) model. This analysis is based on measured data of a DRFTx lab setup. However, they are backed up by simulations gained from readily available nonlinear transistor models within an RF computer aided design (CAD) tool.
{"title":"On nonlinear memory effects in all digital RF-transmitters","authors":"N. Leder, B. Pichler, Henri Ruotsalainen, Thomas Faseth, H. Arthaber","doi":"10.1109/IMARC.2015.7411377","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411377","url":null,"abstract":"Recent developments in the field of wireless communications emphasis the urgent need for flexible radio frequency (RF) front ends. Not only a multitude of frequency bands needs to be supported, also modulation formats come in a greater variety and tend to develop at a faster pace. While receiver topologies have been adapted by employing software defined radio (SDR) concepts, translating these developments to transmitters was hindered. Mostly due to the lack of power amplifiers that are energy efficient, linear and broadband at the same time. All digital radio frequency transmitters (DRFTx) are a promising, however, not a very mature option to overcome this issue. While offering the desired flexibility and potential energy efficient operation, these setups exhibit relatively long memory effects which also result in nonlinear inter symbol interference (nISI). In this paper it is demonstrated that the observed nonlinear memory effects, dominantly caused by the need for a reflective reconstruction filter, can be modeled reliably by a lookup table (LUT) model. This analysis is based on measured data of a DRFTx lab setup. However, they are backed up by simulations gained from readily available nonlinear transistor models within an RF computer aided design (CAD) tool.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116032263","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411427
Tapas K. Bhuiya, Twisha Upadhyay, S. Thakur, R. Harsh
Moisture measurement of grains and pulses using microwave transmission technique based on attenuation and phase shift is presented in this paper. In the proposed system, horn lens antennas are used which offer a directivity improvement of 2 dB as compared to conventional horn enabling higher accuracy in measurement. Calibration of the system is performed using three calibration techniques of which the Density Independent Function method offers the least SEC of 0.1217%. A Graphical User Interface has been developed which allows the user to calibrate the system for the grains and pulses of his choice in calibration mode In the operation mode, user can determine the moisture content, permittivity, bulk density of the sample under test.
{"title":"Design and development of microwave based moisture measurement system","authors":"Tapas K. Bhuiya, Twisha Upadhyay, S. Thakur, R. Harsh","doi":"10.1109/IMARC.2015.7411427","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411427","url":null,"abstract":"Moisture measurement of grains and pulses using microwave transmission technique based on attenuation and phase shift is presented in this paper. In the proposed system, horn lens antennas are used which offer a directivity improvement of 2 dB as compared to conventional horn enabling higher accuracy in measurement. Calibration of the system is performed using three calibration techniques of which the Density Independent Function method offers the least SEC of 0.1217%. A Graphical User Interface has been developed which allows the user to calibrate the system for the grains and pulses of his choice in calibration mode In the operation mode, user can determine the moisture content, permittivity, bulk density of the sample under test.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127088464","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411422
Abhishek Kumar Jha, M. Akhtar
This paper presents a novel tri-band epsilon-near-zero (ENZ) substrate integrated waveguide (SIW) based microwave sensor for microwave material testing at global system for mobile communications (GSM) bands. The prototype RF sensor is designed, simulated, and tested for the microwave characterization of materials in 3G and 4G frequency bands. The proposed design provides a substantial reduction in the sensor size, and facilitates complex permittivity measurement at multiple frequencies with reasonable sensitivity as compared to the conventional SIW based sensors. The device is fabricated using multiple layers of FR4 substrate, and the RF signal is coupled using SMA connectors which is then tested for various reference samples. The measured data are found to be in good agreement with their reference values thus validating the proposed design methodology.
{"title":"Design of tri-band ENZ SIW sensor for microwave testing of materials in 3G and 4G GSM bands","authors":"Abhishek Kumar Jha, M. Akhtar","doi":"10.1109/IMARC.2015.7411422","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411422","url":null,"abstract":"This paper presents a novel tri-band epsilon-near-zero (ENZ) substrate integrated waveguide (SIW) based microwave sensor for microwave material testing at global system for mobile communications (GSM) bands. The prototype RF sensor is designed, simulated, and tested for the microwave characterization of materials in 3G and 4G frequency bands. The proposed design provides a substantial reduction in the sensor size, and facilitates complex permittivity measurement at multiple frequencies with reasonable sensitivity as compared to the conventional SIW based sensors. The device is fabricated using multiple layers of FR4 substrate, and the RF signal is coupled using SMA connectors which is then tested for various reference samples. The measured data are found to be in good agreement with their reference values thus validating the proposed design methodology.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122209701","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411367
Mohammed Alshareef, H. Behairy, O. Haraz, M. Ashraf, S. Alshebeili
This paper presents a circular monopole antenna with two steps and an offset circular slot for passive ultra-wideband (UWB) radiofrequency identification (RFID) tag applications. The proposed tag will be used as a backscatterer for UWB localization applications. The scattering characteristics of the proposed UWB RFID tag such as the radar cross-section (RCS) and time domain waveforms are theoretically studied using commercial software program. Three different kinds of loads, i.e. 50-Ω matched, short-circuit and open-circuit loads are simulated. The proposed UWB monopole antenna has been used because of its good omnidirectional radiation characteristics. Results show that the backscattering from the UWB monopole antenna mode and structural mode can be easily distinguished in time-domain.
{"title":"A circular monopole antenna with two steps and an offset circular slot for passive UWB-RFID tag localization applications","authors":"Mohammed Alshareef, H. Behairy, O. Haraz, M. Ashraf, S. Alshebeili","doi":"10.1109/IMARC.2015.7411367","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411367","url":null,"abstract":"This paper presents a circular monopole antenna with two steps and an offset circular slot for passive ultra-wideband (UWB) radiofrequency identification (RFID) tag applications. The proposed tag will be used as a backscatterer for UWB localization applications. The scattering characteristics of the proposed UWB RFID tag such as the radar cross-section (RCS) and time domain waveforms are theoretically studied using commercial software program. Three different kinds of loads, i.e. 50-Ω matched, short-circuit and open-circuit loads are simulated. The proposed UWB monopole antenna has been used because of its good omnidirectional radiation characteristics. Results show that the backscattering from the UWB monopole antenna mode and structural mode can be easily distinguished in time-domain.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124144537","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411387
C. Viegas, B. Alderman, J. Powell, Hairui Liu, Hui Wang, R. Sloan
Millimeter wave radiometry is fast becoming a more widespread technique in imaging and non-destructive testing due to its inherent benefits over the visible spectrum. Transparency to most non-conductive materials combined with better spatial resolution of objects are a few underlining features of using millimeter waves. This paper describes the characterization of two broadband, planar Schottky diode based radiometer modules centered at 94 GHz and 183 GHz. The 94 GHz radiometer is built using a W-band fundamental mixer configuration while the 183 GHz radiometer uses a sub-harmonic mixer. The local oscillator scheme consisting of a 30 GHz source which is frequency tripled to 90 GHz is common to both radiometers. The frequency tripler has measured conversion efficiency of 10%. The IF bandwidth for the fundamental mixer is about 18 GHz while the sub-harmonic mixer is 10 GHz. The double-sideband mixer noise temperature for both front end mixers was measured to be around 600 K with a conversion loss of approximately 5-6 dB. Radiometer characterization for noise equivalent temperature difference will also be presented.
{"title":"Characterization of 94 GHz and 183 GHz planar schottky diode based radiometer modules","authors":"C. Viegas, B. Alderman, J. Powell, Hairui Liu, Hui Wang, R. Sloan","doi":"10.1109/IMARC.2015.7411387","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411387","url":null,"abstract":"Millimeter wave radiometry is fast becoming a more widespread technique in imaging and non-destructive testing due to its inherent benefits over the visible spectrum. Transparency to most non-conductive materials combined with better spatial resolution of objects are a few underlining features of using millimeter waves. This paper describes the characterization of two broadband, planar Schottky diode based radiometer modules centered at 94 GHz and 183 GHz. The 94 GHz radiometer is built using a W-band fundamental mixer configuration while the 183 GHz radiometer uses a sub-harmonic mixer. The local oscillator scheme consisting of a 30 GHz source which is frequency tripled to 90 GHz is common to both radiometers. The frequency tripler has measured conversion efficiency of 10%. The IF bandwidth for the fundamental mixer is about 18 GHz while the sub-harmonic mixer is 10 GHz. The double-sideband mixer noise temperature for both front end mixers was measured to be around 600 K with a conversion loss of approximately 5-6 dB. Radiometer characterization for noise equivalent temperature difference will also be presented.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128554662","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411432
B. S. Reddy, V. S. Kumar, V. Srinivasan, Y. Mehta
In satellite communications, Ground stations continuously monitor the navigation signals by one way ranging to determine the orbital parameters of the satellite as a part of TT&C. For achieving navigational functionality a number of ground-based elements are involved. One of the important elements are Range and Integrity monitoring stations which are established at accurately known locations for facilitating one way ranging. In India IRNSS is being established for navigation purpose. The ground segment stations use a dual band antenna in L5 (1.176GHz) and S (2.492GHz) band with common phase center and the stations are named as `IRNSS Range and Integrity Monitoring Stations' (IRIMS). A Dual band circularly polarized antenna with common phase center has been developed for these ground stations to cater to both the IRNSS downlink frequencies. This paper describes the design aspects and measured results of the antenna.
{"title":"Dual band circularly polarized microstrip antenna for IRNSS reference receiver","authors":"B. S. Reddy, V. S. Kumar, V. Srinivasan, Y. Mehta","doi":"10.1109/IMARC.2015.7411432","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411432","url":null,"abstract":"In satellite communications, Ground stations continuously monitor the navigation signals by one way ranging to determine the orbital parameters of the satellite as a part of TT&C. For achieving navigational functionality a number of ground-based elements are involved. One of the important elements are Range and Integrity monitoring stations which are established at accurately known locations for facilitating one way ranging. In India IRNSS is being established for navigation purpose. The ground segment stations use a dual band antenna in L5 (1.176GHz) and S (2.492GHz) band with common phase center and the stations are named as `IRNSS Range and Integrity Monitoring Stations' (IRIMS). A Dual band circularly polarized antenna with common phase center has been developed for these ground stations to cater to both the IRNSS downlink frequencies. This paper describes the design aspects and measured results of the antenna.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124409721","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411435
Y. Hemaltha, Ritesh Kumar, Manish Mendhe, B. Naresh Kumar
This paper describe the design and implementation of two stage activity detection module to configure the Receiver architecture for meeting wideband, high sensitivity & 100% Probability of Intercept (POI) requirements for Electronic Warfare (EW) receiver covering 0.5-18 GHz. The Narrowband band receiver offers a high sensitivity but suffers from low POI as the instantaneous processing bandwidth is fraction of input bandwidth covered by receiver front end. The activity detection technique in this regards offers the wide open functionality in terms of frequency when used in conjunction with narrow band receiver. The design and implementation approach, advantages and limitations of this technique are mentioned in this paper.
{"title":"Design & implementation of activity detection based configurable Receiver architecture for EW application","authors":"Y. Hemaltha, Ritesh Kumar, Manish Mendhe, B. Naresh Kumar","doi":"10.1109/IMARC.2015.7411435","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411435","url":null,"abstract":"This paper describe the design and implementation of two stage activity detection module to configure the Receiver architecture for meeting wideband, high sensitivity & 100% Probability of Intercept (POI) requirements for Electronic Warfare (EW) receiver covering 0.5-18 GHz. The Narrowband band receiver offers a high sensitivity but suffers from low POI as the instantaneous processing bandwidth is fraction of input bandwidth covered by receiver front end. The activity detection technique in this regards offers the wide open functionality in terms of frequency when used in conjunction with narrow band receiver. The design and implementation approach, advantages and limitations of this technique are mentioned in this paper.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132391628","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 : 2015-12-01DOI: 10.1109/IMARC.2015.7411373
D. Reddy, B. Gowrish, V. K. Velidi, A. Subramanyam, V. Srinivasan, Y. Mehta
This paper describes the design of a folded rectangular waveguide cavity band pass filter, incorporating virtual negative coupling (VNC) by means of circular iris, at X-band. Thus, the filter is robust from mechanical aspects, and hence apt for space application. The filter realized at 8310 MHz with 1.2 percent fractional bandwidth, has a sharp roll-off due to VNC. As a result, rejection better than 40 dBc is achieved at just 100 MHz offset from band centre. Compared to traditional all pole filter, introduction of VNC has resulted in around 20% size reduction.
{"title":"Virtual negative coupling in folded waveguide cavity filter for space applications","authors":"D. Reddy, B. Gowrish, V. K. Velidi, A. Subramanyam, V. Srinivasan, Y. Mehta","doi":"10.1109/IMARC.2015.7411373","DOIUrl":"https://doi.org/10.1109/IMARC.2015.7411373","url":null,"abstract":"This paper describes the design of a folded rectangular waveguide cavity band pass filter, incorporating virtual negative coupling (VNC) by means of circular iris, at X-band. Thus, the filter is robust from mechanical aspects, and hence apt for space application. The filter realized at 8310 MHz with 1.2 percent fractional bandwidth, has a sharp roll-off due to VNC. As a result, rejection better than 40 dBc is achieved at just 100 MHz offset from band centre. Compared to traditional all pole filter, introduction of VNC has resulted in around 20% size reduction.","PeriodicalId":307742,"journal":{"name":"2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132556904","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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