Thu, 07 Aug 2008 21:52:47 BST CiteULike: dcastro's diplexer http://www.citeulike.org/user/dcastro/tag/diplexer CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/3015426 <i>Antennas and Propagation International Symposium, 2007 IEEE (2007), pp. 4977-4980.</i><br /><br />Recently, we proposed a super compact metamaterial particle called logarithmic spiral resonators (LSRs) and used them in microwave filter applications. The stopband property in LSRs is due to the resonant behavior of individual elements and not due to the periodicity. Therefore LSR can generate a stopband even with one element. In this paper we study the applications of complementary and conventional LSRs in microstrip and coplanar waveguide (CPW) duplexer designs, respectively. Being the dual counterpart of complementary LSRs (CLSRs), the conventional LSRs are investigated here for the first time. Compact microstrip and CPW duplexers using complementary and conventional logarithmic spiral resonators O Isik KP Esselle Yuehe Ge doi:10.1109/APS.2007.4396662 Antennas and Propagation International Symposium, 2007 IEEE (2007), pp. 4977-4980. 2008-07-17T19:56:25-00:00 2007 Antennas and Propagation International Symposium, 2007 IEEE 4977 4980 diplexer microstrip tl http://www.citeulike.org/user/dcastro/article/3015425 <i>Antenna Technology Small Antennas and Novel Metamaterials, 2006 IEEE International Workshop on (2006), pp. 241-244.</i> A Diplexer Based on the Spatial Filtering Property of Planar Anisotropic Transmission-Line Metamaterials JKH Wong KG Balmain GV Eleftheriades Antenna Technology Small Antennas and Novel Metamaterials, 2006 IEEE International Workshop on (2006), pp. 241-244. 2008-07-17T19:56:22-00:00 2006 Antenna Technology Small Antennas and Novel Metamaterials, 2006 IEEE International Workshop on 241 244 diplexer metamaterial tl http://www.citeulike.org/user/dcastro/article/3015422 <i>Antennas and Propagation International Symposium, 2007 IEEE (2007), pp. 4957-4960.</i><br /><br />This work demonstrates how certain properties of Negative-Refractive-Index Transmission-Line (NRI-TL) metamaterials can be utilized to miniaturize conventional microwave devices used to feed antennas. Specifically in NRI-TLs <i>small</i> values of the loading elements lead to <i>large</i> phase shifts per-unit-length, thus facilitating miniaturization. Using this principle, a compact NRI-TL branch-line coupler (85% area reduction) is presented. Moreover, a filter is presented with a performance that is similar to a four-stage coupled-line filter that is twice as long. Finally, these building blocks are combined to synthesize a compact NRI-TL diplexer that can separate two closely spaced frequencies (1.95 GHz / 2.03 GHz) with a minimum of 20 dB isolation. Compact Negative-Refractive-Index Transmission-Line (NRI-TL) coupler, filter and diplexer R Islam GV Eleftheriades doi:10.1109/APS.2007.4396657 Antennas and Propagation International Symposium, 2007 IEEE (2007), pp. 4957-4960. 2008-07-17T19:56:13-00:00 2007 Antennas and Propagation International Symposium, 2007 IEEE 4957 4960 crlh diplexer http://www.citeulike.org/user/dcastro/article/2809013 <i>URSI (2005)</i> DIPLEXOR COMPACTO DCS-UMTS BASADO EN ESTRUCTURAS PERIÓDICAS Daniel Segovia Ana Robles URSI (2005) 2008-05-18T13:45:32-00:00 2005 URSI diplexer microstrip periodic umts http://www.citeulike.org/user/dcastro/article/2768664 <i>Radio and Wireless Conference, 2003. RAWCON '03. Proceedings (2003), pp. 373-376.</i><br /><br />This paper provides an overview of the current and emerging filter technologies for wireless system applications. Detailed comparisons are given for the various filter technologies used in both base-station and mobile handsets applications. Coaxial, dielectric resonator (DR) and high temperature superconductor (HTS) technologies are addressed for base-station applications while ceramic, multiplayer dielectric, surface acoustic wave (SAW) and film bulk acoustic resonator (FBAR) filters are considered for mobile handsets applications. The current development efforts in each filter technology area are also highlighted. RF filters and diplexers for wireless system applications: state of the art and trends RR Mansour doi:10.1109/RAWCON.2003.1227970 Radio and Wireless Conference, 2003. RAWCON '03. Proceedings (2003), pp. 373-376. 2008-05-08T06:40:36-00:00 2003 Radio and Wireless Conference, 2003. RAWCON '03. Proceedings 373 376 diplexer filter rf wireless http://www.citeulike.org/user/dcastro/article/2768662 <i>Microwave and Wireless Components Letters, IEEE, Vol. 15, No. 2. (2005), pp. 101-103.</i><br /><br />Since conventional microstrip hairpin filter and diplexer are inherently formed by coupled-line resonators, spurious response and poor isolation performance are unavoidable. This letter presents a simple technique that is suitable for an inhomogeneous structure such as microstrip to cure such poor performances. The technique is based on the stepped impedance coupled-line resonator and is verified by the experimental results of the designed 0.9GHz/1.8GHz microstrip hairpin diplexer. High isolation and compact size microstrip hairpin diplexer S Srisathit S Patisang R Phromloungsri S Bunnjaweht S Kosulvit M Chongcheawchamnan doi:10.1109/LMWC.2004.842839 Microwave and Wireless Components Letters, IEEE, Vol. 15, No. 2. (2005), pp. 101-103. 2008-05-08T06:40:31-00:00 2005 Microwave and Wireless Components Letters, IEEE 15 2 101 103 compact diplexer isolation microstrip http://www.citeulike.org/user/dcastro/article/2768661 <i>Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on, Vol. 1 (2002), pp. 187-190 vol.1.</i><br /><br />This paper deals with the design and implementation of a very compact microstrip Tx/Rx diplexer for future UMTS mobile terminals. Miniaturised loop-resonator filters have been developed and combined into a diplexer structure, satisfying different constraints such as high electrical performance level (especially, a very narrow bandwidth, low insertion losses and a high out-of-band rejection), or great compactness and compatibility with a standard planar integration. Design and implementation of a compact microstrip Tx/Rx diplexer for UMTS equipments Y Toutain C Person JP Coupez doi:10.1109/MIKON.2002.1017831 Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on, Vol. 1 (2002), pp. 187-190 vol.1. 2008-05-08T06:40:29-00:00 2002 Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on 1 187 190 vol.1 compact design diplexer microstrip umts http://www.citeulike.org/user/dcastro/article/2768659 <i>Radio Frequency Integrated Circuits (RFIC) Symposium, 2001. Digest of Papers. 2001 IEEE (2001), pp. 213-216.</i><br /><br />This paper presents the results of an antenna switch/filter module integrating GSM/DCS/PCS diplexer functions and Rx/Tx antenna switching on a low temperature co-fired ceramic (LTCC) substrate. Although the RF front-end module (FEM) was configured for dual-band (GSM/DCS) applications, the high pass filter function was designed to operate in the PCS band as well. Harmonic filtering was included in the diplexer design, which reduced the filtering requirements for the power amplifier. The 50-ohm in/out FEM utilized GaAs PHEMT switches and associated bias passives surface mounted on the LTCC substrate. S-parameter characterization of the FEM demonstrated excellent insertion and return loss characteristics. For GSM, the return and insertion losses measured at 912 MHz were better than 28 dB and less than 1.7 dB, respectively. Similarly, for DCS applications, the return and insertion losses at 1.77 GHz were better than 19 dB and less than 1.5 dB, respectively. In both cases, the design approach yielded excellent agreement between measured and simulated results Design of an LTCC switch diplexer front-end module for GSM/DCS/PCS applications R Lucero W Qutteneh A Pavio D Meyers J Estes doi:10.1109/RFIC.2001.935678 Radio Frequency Integrated Circuits (RFIC) Symposium, 2001. Digest of Papers. 2001 IEEE (2001), pp. 213-216. 2008-05-08T06:40:26-00:00 2001 Radio Frequency Integrated Circuits (RFIC) Symposium, 2001. Digest of Papers. 2001 IEEE 213 216 design diplexer front-end gsm http://www.citeulike.org/user/dcastro/article/2768658 <i>Microwave Conference, 2003. 33rd European, Vol. 3 (2003), pp. 919-922 Vol.3.</i><br /><br />A compact wide-band microstrip diplexer working in the 0.9/spl divide/2.5 GHz frequency range is presented. This component is a key part of the feeding network of a multifunctional antenna, working at five frequency bands associated to terrestrial and satellite radio services. By using interdigital capacitors in conjunction with the stepped impedance technique, very good results in terms of compactness and performances have been obtained. An unconventional arrangement of the filters has led to a further reduction of the dimensions. Planar microstrip diplexer for multifunctional antenna L Marcaccioli G Olbrich S Lindenmeier R Sorrentino doi:10.1109/EUMC.2003.1262801 Microwave Conference, 2003. 33rd European, Vol. 3 (2003), pp. 919-922 Vol.3. 2008-05-08T06:40:25-00:00 2003 Microwave Conference, 2003. 33rd European 3 919 922 Vol.3 antenna diplexer microstrip planar http://www.citeulike.org/user/dcastro/article/2768657 <i>Microwaves, Antennas and Propagation, IEE Proceedings - (2005), pp. 455-459.</i><br /><br />A planar microwave diplexer based on the substrate integrated waveguide (SIW) technique is presented in the paper. The SIW-microstrip transition and SIW filter are experimentally investigated, and then a C-band SIW diplexer is designed and fabricated using a standard PCB process. The relative bandwidths of up and down channels are 3% and 4.8% at 5.96 GHz and 5.42 GHz, respectively. The measured results show good channel isolation, moderate insert losses and small return losses in pass-bands. The diplexer takes a planar form and can be easily integrated in microwave integrated circuits (MICs). Planar diplexer for microwave integrated circuits ZC Hao W Hong JX Chen XP Chen K Wu Microwaves, Antennas and Propagation, IEE Proceedings - (2005), pp. 455-459. 2008-05-08T06:40:24-00:00 2005 Microwaves, Antennas and Propagation, IEE Proceedings - 455 459 diplexer microwave planar http://www.citeulike.org/user/dcastro/article/2768656 <i>Microwave Conference, 2004. 34th European, Vol. 3 (2004), pp. 1233-1236.</i> A procedure for computer-aided design of compact diplexers with folded filters C Tomassoni L Mareaccioli M Dionigi M Mongiardo RV Gatti R Sorrentino Microwave Conference, 2004. 34th European, Vol. 3 (2004), pp. 1233-1236. 2008-05-08T06:40:23-00:00 2004 Microwave Conference, 2004. 34th European 3 1233 1236 cad compact design diplexer http://www.citeulike.org/user/dcastro/article/2768650 <i>Microwave Conference, 2003. 33rd European, Vol. 1 (2003), pp. 211-213 Vol.1.</i><br /><br />The paper presents a strategy for the design of waveguide filters and diplexers, with the help of commercially available 3D full-wave simulators. The problem in hand is subdivided into an appropriate number of well defined steps, starting from the choice of the circuit prototype to the final full-wave EM simulation. The computational effort is adequate and, often, the overall design time for the complete design is reduced to less than 1 day. One example, concerning a WR12 filter, employing non-standard coupling elements is discussed. An effective strategy for the use of commercial full-wave simulators in the design of waveguide filters and diplexers A Morini N Iliev G Venanzoni G Cereda B Gabrielli Microwave Conference, 2003. 33rd European, Vol. 1 (2003), pp. 211-213 Vol.1. 2008-05-08T06:36:17-00:00 2003 Microwave Conference, 2003. 33rd European 1 211 213 Vol.1 design diplexer filter simulation http://www.citeulike.org/user/dcastro/article/2768647 <i>Microwaves, Radar and Wireless Communications. 2000. MIKON-2000. 13th International Conference on, Vol. 2 (2000), pp. 525-528 vol.2.</i><br /><br />General structures and a classification of prototypes (for about 250 networks) for broadband microwave filters and matching networks for given complex load are presented. The peculiarities of synthesis methods, theoretical limitations and properties of input impedance for singly terminated and double terminated networks and frequency diplexers are described. Results of a computer simulation of frequency characteristics for different broadband filters and matching networks are presented Structures of prototypes for broadband microwave filters, diplexers and matching networks G Czawka doi:10.1109/MIKON.2000.913987 Microwaves, Radar and Wireless Communications. 2000. MIKON-2000. 13th International Conference on, Vol. 2 (2000), pp. 525-528 vol.2. 2008-05-08T06:36:11-00:00 2000 Microwaves, Radar and Wireless Communications. 2000. MIKON-2000. 13th International Conference on 2 525 528 vol.2 broadband diplexer filter matching microwave http://www.citeulike.org/user/dcastro/article/2768644 <i>Antennas and Propagation, 2001. Eleventh International Conference on (IEE Conf. Publ. No. 480), Vol. 1 (2001), pp. 86-89 vol.1.</i><br /><br />Photonic band gap (PBG) structures are applied into the design of microstrip diplexer patch antenna at millimetre wave frequencies to enhance the isolation between Tx and Rx ports. Theoretical results indicate that the isolation can be improved and measurement results are to be presented Isolation enhancement of PBG microstrip diplexer patch antenna Y Hao CG Parini Antennas and Propagation, 2001. Eleventh International Conference on (IEE Conf. Publ. No. 480), Vol. 1 (2001), pp. 86-89 vol.1. 2008-05-08T06:36:03-00:00 2001 Antennas and Propagation, 2001. Eleventh International Conference on (IEE Conf. Publ. No. 480) 1 86 89 vol.1 antenna diplexer isolation microstrip patch pbg http://www.citeulike.org/user/dcastro/article/2768631 <i>Antennas and Wireless Propagation Letters, IEEE, Vol. 1 (2002), pp. 135-137.</i><br /><br />Anisotropic characteristics of a uniplanar compact photonic bandgap (UC-PBG) structure are studied and applied for the first time into the design of microstrip diplexer patch antennas to enhance the isolation between transmitting (Tx) and receiving (Rx) ports. Theoretical results indicate that the isolation is improved and measurement results are compared with simulation data and good agreement is reported. Isolation enhancement of anisotropic UC-PBG microstrip diplexer patch antenna Y Hao CG Paini doi:10.1109/LAWP.2002.806757 Antennas and Wireless Propagation Letters, IEEE, Vol. 1 (2002), pp. 135-137. 2008-05-08T06:28:53-00:00 2002 Antennas and Wireless Propagation Letters, IEEE 1 135 137 antenna diplexer patch pbg http://www.citeulike.org/user/dcastro/article/2768630 <i>Antennas and Propagation Society International Symposium, 2001. IEEE, Vol. 2 (2001), pp. 490-493 vol.2.</i><br /><br />This paper presents a new diplexer using one-dimensional (1D) photonic band gap (PBG) structures to switch transmit/receive paths in a multiband transceiver antenna system. The 1D PBG structure consists of periodically etched holes on the ground plane along a microstrip-line. The new diplexer is optimized by parametric analysis, tapering and meandering of PBG bandstop filters, and full-wave simulation. A diplexer operating at four bands of 10, 12, 19, and 21 GHz is demonstrated with measured and simulated results. The new 1D PBG diplexer should be useful in multiband transceiver systems A new PBG diplexer for a multiband transceiver antenna system Tae-Yeoul Yun Kai Chang doi:10.1109/APS.2001.959768 Antennas and Propagation Society International Symposium, 2001. IEEE, Vol. 2 (2001), pp. 490-493 vol.2. 2008-05-08T06:28:49-00:00 2001 Antennas and Propagation Society International Symposium, 2001. IEEE 2 490 493 vol.2 antenna diplexer multiband pbg transceiver http://www.citeulike.org/user/dcastro/article/2768628 <i>Antennas and Propagation International Symposium, 2007 IEEE (2007), pp. 1561-1564.</i> Microstrip filters and diplexers for WiMAX applications Damir Zayniyev Djuradj Budimir George Zouganelis doi:10.1109/APS.2007.4395806 Antennas and Propagation International Symposium, 2007 IEEE (2007), pp. 1561-1564. 2008-05-08T06:28:46-00:00 2007 Antennas and Propagation International Symposium, 2007 IEEE 1561 1564 diplexer filter microstrip wimax http://www.citeulike.org/user/dcastro/article/2768629 <i>Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on, Vol. 2 (2005)</i><br /><br />A simple microstrip diplexer using defected ground structure (DGS) is described in this letter. The diplexer has been designed, fabricated, and measured. Results show the new diplexer exhibits an isolation of greater than 26 dB between channels. A novel microstrip diplexer design using defected ground structure Haiwen Liu T Yoshimasu S Kurachi Jia Chen Zhengfan Li Xiaowei Sun doi:10.1109/ICCCAS.2005.1495297 Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on, Vol. 2 (2005) 2008-05-08T06:28:47-00:00 2005 Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on 2 1100 desing diplexer microstrip pbg http://www.citeulike.org/user/dcastro/article/2768627 <i>Electronics Letters, Vol. 41, No. 14. (2005), pp. 810-811.</i><br /><br />A new topology for the design of microstrip microwave diplexers, based on the use of quasi-lumped resonators, is presented. Specifically, the receiver (Rx) and transmitter (Tx) filters of the diplexer are implemented by etching complementary split ring resonators (CSRRs) in the ground plane as well as series capacitive gaps and shunt inductive strips in the upper metal level. By this means, narrowband microwave diplexers with transmission zeros can be synthesised, which allow for the improvement of Rx/Tx isolation. A prototype device operative in the 2.4-3.0 GHz frequency band is presented. Measured insertion losses are lower than 2 dB while the isolation between Rx/Tx channels is in the vicinity of 40 dB. Diplexer dimensions (29.8/spl times/16.3 mm), which are small on account of the semi-lumped resonators employed, and performance point to the practical application of these structures in communication transceiver front-ends. Complementary split ring resonators for microstrip diplexer design J Bonache I Gil J Garcia-Garcia F Martin doi:10.1049/el:20050895 Electronics Letters, Vol. 41, No. 14. (2005), pp. 810-811. 2008-05-08T06:28:27-00:00 2005 Electronics Letters 41 14 810 811 diplexer microstrip resonator ring http://www.citeulike.org/user/dcastro/article/2768625 <i>Microwave Theory and Techniques, IEEE Transactions on, Vol. 49, No. 10. (2001), pp. 1818-1820.</i><br /><br />This paper introduces a three-port microstrip multifrequency diplexer used in a phased-array transceiver system that employs band-stop filters with open-circuited stubs for band selection and separation. The diplexer is designed to take 10, 12, 19, and 21 GHz into port 1 and to separate 10 and 19 GHz to port 2 and 12 and 21 GHz to part 3 with minimal dispersion. The insertion loss for each frequency varies from 0.4 to 3.4 db and the return loss is better than 10 dB. The isolation between channels at the four frequencies is greater than 50 dB. Each passband created between adjacent stopbands has a bandwidth over 1 GHz. The microstrip diplexer is designed using periodic stubs that collectively have the advantages of low insertion loss, high isolation and rejection, wide-band performance on each channel, and easy fabrication. This type of diplexer has many applications in multifrequency transceivers for communication systems Wide-band low-loss high-isolation microstrip periodic-stub diplexer for multiple-frequency applications B Strassner K Chang doi:10.1109/22.954789 Microwave Theory and Techniques, IEEE Transactions on, Vol. 49, No. 10. (2001), pp. 1818-1820. 2008-05-08T06:28:18-00:00 2001 Microwave Theory and Techniques, IEEE Transactions on 49 10 1818 1820 diplexer frequency high isolation loss low microstrip multiple wideband http://www.citeulike.org/user/dcastro/article/2185964 <i>Microwave Conference, 2005 European, Vol. 1 (2005), 4 pp..</i><br /><br />A diplexer based on composite right/left handed (CRLH) transmission lines (TL) is presented in this paper. These TLs have been studied, described and applied in (Okabe et al., 2004), (I-Hsiang Lin et al., 2004) and (Caloz et al., 2004). A simultaneous control of the phase at two different frequencies has been done by using the properties of the CRLH TLs. A diplexer at 950 MHz and 1.8 GHz has been built using this technology. Novel diplexer based on CRLH transmission lines Novel diplexer based on CRLH transmission lines D Castro-Galan V Gonzalez-Posadas C Martin-Pascual doi:10.1109/EUMC.2005.1608811 Microwave Conference, 2005 European, Vol. 1 (2005), 4 pp.. 2008-01-01T19:26:23-00:00 2005 Microwave Conference, 2005 European 1 4 pp. crlh diplexer tesis tl