In the last decade, the filter community has innovated both design techniques and the
technology used for practical implementation. In design, the philosophy has become “if you …

Differentially driven devices represent a highly promising research field for radio frequency
(RF), microwave (MW), and millimeter-wave (mmWave) designers and engineers. Designs …

In this article, we present the first demonstration of distributed and symmetrical all-band
quasi-absorptive filters that can be designed to arbitrarily high orders. The proposed quasi …

A narrowband dual-band bandpass filter (BPF) with independently tunable passbands is
presented through a systematic design approach. A size-efficient coupling system is …

RF/microwave bandpass filters (BPFs) are fundamental components in high-frequency RF
transceivers. On the transmitter side, they limit the transmitted RF signal bandwidth by …

In this brief, a class of microstrip bandpass filters (BPFs) with quasi-reflectionless behavior
on both input and output ports is presented. A single-port reflectionless BPF is proposed by …

Two novel classes of high-selectivity input-reflectionless bandpass filters (BPFs) with narrow-
and wide-band characteristics and out-of-band transmission zeros (TZs) are presented …

Classes of input-reflectionless wideband bandpass filters (BPFs) and balun BPF with quasi-
elliptic-type (QET) responses are reported. They consist of two signal-transmission parts in …

A dual-wideband bandpass filter is proposed and analyzed, which is based on loaded open-
/short-circuited stubs. The dual-band filter consists of a second-order bandpass filter and a …

Two balanced microstrip dual-band bandpass filters (BPFs) based on short stub loaded
resonator (SSLR) and open stub loaded resonator (OSLR) are presented in this brief …