The prospects for and the state of the art of adaptable RF hardware are reviewed, focusing
primarily on the traditional frequency planning bottleneck, the filtering stages. First, a case is …

This article presents novel designs of reconfigurable microwave filters based on the recently
introduced concept of field programmable microwave substrate (FPMS). Using …

A 0.7-1.0-GHz reconfigurable bandpass-to-bandstop filter with selectable 2-and 4-pole
responses is presented. The proposed filter can act as a 2-or 4-pole bandpass or bandstop …

In this paper, we present a reconfigurable filter capable of having three different responses,
such as bandstop, bandpass, and all-pass responses. For designing the tri-function filter, we …

RF-MEMS technology permits practical implementations of high-Q (Q from 300 to over
1,000) tunable microwave filters with power handling in the>; 1-10 W range, with significant …

In this paper, we show a tunable inter-resonator coupling structure capable of varying the
coupling coefficient between resonators from positive to negative values, including values …

This letter presents a tunable bandstop filter with the capability of controlling the shape of the
frequency response. The proposed filter structure can be tuned to have either a Butterworth …

This paper presents a tunable bandpass filter with a reconfigurable-pole response. 2-, 3-,
and 4-pole states can be obtained based on employing series resonators with RF switches …

This paper presents frequency agile filter based on current difference transconductance
amplifier (CDTA). The agile filters used in this work provide high agilty, tunability and quality …

A tunable highly integrated bandpass–bandstop filter (BSF) cascade that is capable of
dynamically relocating its transmission zeros arbitrarily close to its passband without …