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This paper presents a novel uniplanar tunable bandpass filter. In this filter, each resonator can be reconfigured easily using PIN diodes or MEMS switches. Design equations are derived from a simple circuit model which takes into account the multimodal behavior of the coplanar waveguide. Experimental measurements of a 2-GHz prototype, featuring reconfigurable bandwidth and low losses, validate the...
This paper presents a high linearity reconfigurable ultra-wideband (UWB) filter. The proposed structure is able to achieve high performance with good linearity and no significant loss. A single PIN diode (BAP65–02) is used to switch the filter from a bandpass to a bandstop response at the same UWB spectrum. An optical switch, comprised of a silicon dice activated using near infrared light is also...
This paper presents an improved 4-stage on-chip open loop resonator band pass filter (OLR-BPF) for 60 GHz millimeter-wave applications in 0.18 μm CMOS technology. The proposed on-chip BPF employs the folded open loop structure on patterned ground shields in first two stage and open-loop resonator in last two stages to improve the selectivity. By comparison between the electromagnetic (EM) simulations...
A novel compact electrical tunable microstrip band pass filter, realized by coupling two Hairpin-DGS resonators, is proposed. The tunability is achieved by embedding varactor diodes to the Hairpin-DGS resonators. The measured relative tuning range of the band pass filter is 23.5% with a fractional bandwidth of 8%. The measured insertion loss is 3.6 dB to 2.1 dB within the tuning range. The simulated...
In this paper, a new type of GaN HEMT power amplifier (PA) using dual band-notched UWB (Ultra Wideband) bandpass filter which is proposed to control harmonic components at 2.14 GHz is designed and tested. The dual band-notched UWB bandpass filter is constructed by three hairpin fingers and two pairs of folded fingers added on both side extremities, so that it can suppress 6.42 GHz and 10.7 GHz by...
In this paper the design of high-Q active inductor (AI) with high dynamic range is addressed. The proposed AI includes a passive variable phase- and amplitude-compensating network and a highly linear inverting amplifier, forming a gyrator-C architecture. The equivalent inductance and resistance values are tunable in a wide frequency range; outside the operating frequency band, the inductor equivalent...
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