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A fully integrated planar triplexer using microstrips for multi-band UWB has been presented. Three flat sub-bands in the frequency band 3.1-4.8 GHz and 6-9 GHz for multiband UWB have been achieved. The triplexer can be integrated into a printed circuit board using a commercial process at low cost, even though the guard-band has only a relative band...
Contexts in source publication
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... printed circuit boards are commonly used to build space efficient electronics. Standard printed circuit board processes can today provide many choices when it comes to material selection and stack build-up techniques. Fig. 2 shows two different alternatives. Fig. 2(a) and (b) show a regular four metal-layer and flex-rigid (four metal-layer in the rigid part, and two metal-layers in the flexible part) printed circuit boards, respectively. In detail Fig. 2(a) is built-up as follows: Two dual-layer Rogers 4350B (RO4350B) boards processed together with a ...
Context 2
... printed circuit boards are commonly used to build space efficient electronics. Standard printed circuit board processes can today provide many choices when it comes to material selection and stack build-up techniques. Fig. 2 shows two different alternatives. Fig. 2(a) and (b) show a regular four metal-layer and flex-rigid (four metal-layer in the rigid part, and two metal-layers in the flexible part) printed circuit boards, respectively. In detail Fig. 2(a) is built-up as follows: Two dual-layer Rogers 4350B (RO4350B) boards processed together with a Rogers 4450B (RO4450B) prepreg. RO4450B ...
Context 3
... board processes can today provide many choices when it comes to material selection and stack build-up techniques. Fig. 2 shows two different alternatives. Fig. 2(a) and (b) show a regular four metal-layer and flex-rigid (four metal-layer in the rigid part, and two metal-layers in the flexible part) printed circuit boards, respectively. In detail Fig. 2(a) is built-up as follows: Two dual-layer Rogers 4350B (RO4350B) boards processed together with a Rogers 4450B (RO4450B) prepreg. RO4450B prepreg is a sheet material (e.g., glass fabric) impregnated with a resin cured to an intermediate stage, ready for one stage printed circuit board bonding. The flex-rigid printed circuit board in ...
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... detail Fig. 2(a) is built-up as follows: Two dual-layer Rogers 4350B (RO4350B) boards processed together with a Rogers 4450B (RO4450B) prepreg. RO4450B prepreg is a sheet material (e.g., glass fabric) impregnated with a resin cured to an intermediate stage, ready for one stage printed circuit board bonding. The flex-rigid printed circuit board in Fig. 2(b) is built-up similarly but the choices of material must be such that the rigid contour can be cut out with depth controlled laser milling. Using LF8520, LF0100, LF0110 and AP8525 from DuPont™ Pyralux® laminate series. AP series is polyimide only materials, used for the flexible substrate layer. LF8520 is a combination of polyimide ...
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... coupling Edge coupling c. combined broadside-and edge-coupled filter Fig. 7 shows a photo of the implementation with the substrate shown in Fig. 2(a). The size of the triplexer prototype is 53 x 60 mm. Three of the four soldered Sub-Miniature A (SMA) connectors are seen. SMA connectors mounted from the side connect the three input sub- bands. Port 2 is for sub-band #1 (3.432 GHz), Port 3 is for sub-band #2 (3.960 GHz), and Port 4 is for sub-band #3 (4.488 GHz). The fourth output ...
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... than 23 dB. The isolation between the non- neighbouring alternate sub-bands is 51 dB. This work was originally presented in ( Karlsson et al. Nov. 2008 g. measurement of isolation between neighboring and alternate sub-bands Fig. 8. Triplexer simulations and measurements. Fig. 9 shows a photo of the implementation with the substrate shown in Fig. 2(b). The network is realized with a microstrip technology in the rigid part. The size of the triplexer prototype is 25 x 48 mm. Three of the four soldered Sub-Miniature A (SMA) connectors are seen. SMA connectors mounted from the side connect the three input sub-bands. Port 1 is the array input/ output (6-9 GHz), Port 2 is for sub-band #1 ...
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... is seen that for all the 1 GHz sub- bands the group delay is around 1.0 ns and the variation is approximately 0.4 ns within each sub-band. It is the filter type and filter order that dominate the delay (Karlsson et al., 2008). c. measurement of return loss f. measurement of group delay Fig. 10. ...
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Citations
... Due to the above mentioned facts, the scientists developed the several kinds of UWB antennas on various substrates, such as flexible foils [18], [16], textiles [17], coated papers [19], [20], [21], and combinations of flexible and rigid substrates [22]. ...
This paper presents the possibility of application the organic electronics to the production of active circuit components of UWB radar. Work offers an actual survey of the technology and brings sufficient theoretical introduction as well as offers a detailed description of ink jet printing technology, particularly as regard the method of transfer the required pattern to the substrate, inks, advantages and disadvantages of this technology, and also the limitations of ink jet printing. The paper also analyzes the needs for flexible electronics in hand-held devices and especially in applications, where thin, lightweight, low-cost and environmentally friendly electrical devices are necessary. The possibilities of use the inkjet printing technology as a new and modern method to the design and manufacturing the UWB antennas are also described.
A triplexer for ultra-wideband radio implemented entirely with distributed microstrips is presented. The triplexer is composed of a triplex junction network and three bandpass filters. The circuit is integrated in a flex-rigid printed circuit board. Three flat 1 GHz sub-bands in the frequency band 6-9 GHz have been achieved. The group delay variation within each 1 GHz sub-band was measured to be less than 0.4 ns. A good agreement between simulation and measurement was obtained, e.g., less than 0.3 dB difference in the forward transmission in the majority of the frequency band.
