نتایج جستجو برای: microstrip lines
تعداد نتایج: 222641 فیلتر نتایج به سال:
Two wideband left-handed (LH) transmission lines are presented. A pure LH transmission line (PLH TL) materialized by a defected ground structure with an inter-digital capacitor on a microstrip line has a wide LH propagation region without a right-handed (RH) branch in the reduced Brillouin zone. Another is a broadband LH rectangular waveguide utilized by a shorted stub and twisted Eplane posts....
In this paper, different configurations of transmission lines loaded with stepped impedance resonators (SIRs) are reviewed. This includes microstrip lines loaded with pairs of SIRs, and coplanar waveguides (CPW) loaded with multi-section SIRs. Due to the high electric coupling between the line and the resonant elements, the structures are electrically small, i.e., dimensions are small as compar...
A fabrication process has been developed which allows the combination of thin film microstrip transmission lines with released metal structures which can then be rotated out-of-plane by surface tension self-assembly. The transmission lines allow low-loss, impedance matched feeds to the lumped element components. The use of self-assembly allows decoupling from lossy substrates, which can greatly...
Even though the two-stage Wilkinson N-way power divider is simple to design, realize and test, It has been used with strict restrictions in design and fabrication because it requires a very high impedance microstrip line, i.e., extremely low aspect ratio W/H or very thin line conductor width. To overcome this limitation in realizable characteristic impedance a quarter-wave length impedance tran...
— In this paper, the ultra-wideband (UWB) bandpass filter (BPF) with a wide stopband is presented. The prototype of proposed UWB BPF is by bending the five short-circuited stubs and coupling the I/O feed lines. In order to have a wide stopband, an bandstop structure embedded in input/output (I/O) lines without degrading the passband performances is used. The measured results verified that by us...
A generic lumped-element circuit of dual-band bandstop filter (DBBSF) is proposed based on novel composite shunt resonators, and its design method is developed with closed-form formulas. As an example, a DBBSF with center frequencies of 1.7 and 2.3GHz is designed and fabricated using microstrip lines. The measured frequency response agrees excellently with the theoretical predictions, validatin...
This paper describes the first integrated transversal filter for feed-forward equalizers (FFE) operating above 40 Gb/s. Equalization of a 2−1 PRBS over a 9-ft and 6.5-ft cable with SMA connectors is demonstrated on-wafer at 40 Gb/s and 49 Gb/s respectively. The circuit is implemented in a commercial 0.18 μm SiGe BiCMOS process and is based on a differential distributed 7-tap fractionally spaced...
The narrow working bandwidth of microstrip antennas limits their applications in in radar and communication systems. Staked patch antenna based on aperture coupling and asymmetry feeding technique was proposed in this paper. A cross-shape aperture imbedded in the ground plane with asymmetry feeding structure provided a relative wideband electromagnetic coupling and allowed a high isolation betw...
In this paper an edge coupled microstrip coupler with defected ground structure is presented. A normally 7 dB coupler designed on Alumina substrate is converted into a 3 dB coupler by cutting single rectangular slot in the ground plane encompassing the two transmission lines. Other properties of backward wave coupler remain the same, except for a tighter coupling. With this method of design opt...
Experimental results are presented on microwave inductors, transformers, and transmission lines fabricated in an Si/SiGe heterojunction-bipolar-transistor process with standard metallization and a thick polyimide dielectric. Microstrip transmission lines with characteristic impedances from 44 to 73 , ’s from 10 to 14, and insertion losses from 0.11 to 0.16 dB/mm at 10 GHz are presented. Convent...
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