This paper presents a concept of tunable cavity resonator composed resonating and dielectric perturber. is designed measured to prove the tuning mechanism obtained by varying angle rotation A from 0 90 produces ratio 1:1.25, i.e., range 22.2% around 11.5 GHz while maintaining an unloaded Q factor between 1500 2300. After this first experimental validation, third-order bandpass filter then using same base principle. Using single mechanical movement, all three resonators' perturbers are...

A first approach toward the integration of heterogeneous electronic circuit technologies and fully 3-D printed ceramic microwave devices is discussed in this work. Additive manufacturing (AM) capabilities are explored for development multifunction surface-mount compact components used different RF front-ends' scenarios. Monolithic bandpass filters (BPFs) designed to operate <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...

This paper compares several designs of lossy filters for receiver subsystems in satellite transponders. The reference design is a microstrip filter made coupled hairpin resonators. Two approaches are investigated improving the flatness design. first approach combines nonuniform quality factor (Q) resonators transversal network. second uses an inline network with resistive cross couplings. Lossy compared to reference, considering same specifications and technology. cross-couplings finally...

A dual-mode dual-band cavity is proposed for the integration of compact filters with widely separated passbands. The basic structure a working on two distinct dual-modes, realizing four-pole filtering function. An intermediate also designed to validate coupling between cavities. Finally, cavities are coupled together implementing an eight-pole filter passbands at 5 and 7.5 GHz, respectively. Prototypes fabricated measured validating all designs, showing relevance concept.

This paper illustrates the different possibilities given by additive manufacturing technologies for creation of hyperfrequency devices. Firstly a characterization campaign has been made on common plastics used 3D printer using Fused Deposition Modeling (FDM) and material jetting (Polyjet©) technologies. The impact strategy (high speed or high accuracy) part roughness, as well dielectric permittivity loss tangent specifically studied at 10 16 GHz. conductivity coating based silver paint also...

This paper presents an overview of the possibility offered by 3D plastic printers for a quick, simple and affordable manufacturing working filters other passive devices such as antennas. thus goes through numerous examples made with Fused Deposition Modeling (FDM) material jetting (Polyjet©) technologies will highlight how they can now be considered solid companion to RF designers during optimization process up Ku higher bands.

Taking advantage of multilayer technologies, a vertical evolution the interdigital topology is proposed with its associated synthesis method. In order to validate this filter topology, 4-pole filter, centered at 10 GHz, and an 11-pole 6 have been designed fabricated using low-temperature co-fired ceramic (LTCC) technology. Two other multipole filters also showing large surface reduction respect equivalent filters. LTCC technology has chosen for fabricating filters, but can be implemented...

A study on the passive microwave components made by polymer additive manufacturing (polymer jetting) is presented. Different types of (waveguides, couplers, power dividers, filters and antennas) are designed to be in a single part. Using simple cost‐effective metallisation applying silver paint, various prototypes with complex geometries have been manufactured evaluate these proofs concept robustness low‐cost approach make components. measurements show that obtained can provide an acceptable...

This paper presents a 6 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> order quasi-elliptic bandpass filter working at 11.75 GHz and based on dielectric hollow resonators (pucks). The their supporting elements have been fabricated altogether in single part using ceramic (Alumina) additive manufacturing. is simply placed the metal housing therefore limits number of pieces to be assembled. An important aspect this work that no specific,...

This paper presents compact multilayer interdigital filters for realizing general Chebyshev (i.e., quasi-elliptic) filtering functions. Several coupling elements are proposed implementing a wide range of couplings between quarter-wavelength resonators, which placed on unique layer or stacked thanks to technology. multipole designed and fabricated using low-temperature co-fired ceramic (LTCC) Designs experimental results detailed in order appreciate the potential The this especially...

This paper deals with a study on multiplexer topology based 3dB couplers. A diplexer in Ku-band was conceived and printed using material jetting (Polyjet®) Fused Deposition Modeling (FDM) technologies for this purpose. The different parts composing the are separately tested. In first step, 3 dB directional couplers both experimentally confirming expected behavior. 4 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> order TE101 mode...

The design of 3D printed plastic modular filters is presented in this paper. proposed principle allows the user to choose at will order a bandpass filter by plugging as much blocks (resonators) needed. conception and results 4-poles are discussed. Because their simplicity, these have potential be used for microwave practical courses thanks good performances, quick easy assembly, tuning maintenance finally low cost manufacturing.

Two compact microwave filters designed using multilayer inter-digital resonators are introduced. The first structure combines vertically and horizontally coupled interdigital for optimizing the surface occupation while realizing high-order filters. A 12-pole filter centered at 18 GHz, with a 2.4 GHz passband, is characterized. second composed of stepped-impedance widening upper stopband. 3 0.9 both simulated experimental results show an extended stopband up to 21 GHz.

A new type of continuously tunable filter is described here. Such composed a body with ribbon, passing in its center, which can produce custom evolution the filtering function such as center frequency tunability or bandwidth tunability. Simulations for these two possibilities are presented to underpin concept. presenting shift 700 MHz around 12 GHz has been realized and measured. The optimization method used this kind also given discussed.

This paper presents a continuously tunable bandpass filter fully made by plastic additive manufacturing. is designed to provide constant absolute bandwidth around 5.7 GHz using mechanical movement. A 3D spiral ribbon of metallized create 4 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> order Chebyshev making it rotate in standard WR159 waveguide. The obtained experimentally provides 325 MHz +/- 35 while having its operating frequency...

Abstract This paper illustrates the different possibilities given by additive manufacturing technologies for creation of passive microwave hardware. The more specifically highlights a prototyping scheme where 3D-printed plastic parts can be used as initial proofs concept before considering advanced (metal parts, instance). First, characterization campaign has been made on common plastics 3D printer using fused deposition modeling and material jetting (Polyjet © ) technologies. impact...

Two millimetre-wave filters (a Chebyshev 4-pole and a quasi-elliptical 6-pole 2 zeroes realized with dual-mode resonators) centred at 39 GHz are presented in this paper. They both obtained by laser machining Alumina substrates metallized an electroless Copper plating technique. Laser etching is finally used again to etch the different patterns required for their input output as well other features. Despite simplicity of method, good agreements between full wave simulations measurements,...

This paper presents the design of a dual band filter for integration RF receiver front-end in L band. The synthesis from imposed filtering specifications led us to choose SIW technology that ensures good trade-off between electrical performances and space requirements.

A compact dual-mode dual-band filter with widely separated passbands is proposed for possible integration in a TX/RX front-end. The basic structure cavity working on two distinct dual-modes. design of this realizing 4-pole filtering function detailed. prototype fabricated and measured validating the concept.

This paper presents a novel miniaturization approach by co-designing together filter and an antenna. Indeed, contrary to classical filter-antenna design, which 50 Ω transition between the antenna, co-design methodology proposed in this will prove that both antenna can be optimized on complex impedance. For impedance, different from Ω, volume reduced more than 50% while presenting high radiation efficiency. Moreover, performance impedance loads without being affected compared filter. new...