Passive Components

This session is composed of innovative tunable and active filters. The first paper will discuss a non-reciprocal bandpass filter using spatio-temporal modulation. In addition, a tunable six-channel diplexer with compact size will be presented. An N-path filter with frequency/code-domain filtering, a balanced-balanced tunable filtering LNA, an electronically-reconfigurable doublet topology, and a liquid-metal-tuning bandpass filter will also be presented.

This session will showcase reconfigurable filters with reconfigurable transfer functions and stopbands. An innovative filter topology that enables independent tuning and seamless merging of multiple passbands will be discussed. In addition, a filter that utilizes a single tuning element to create a response with minimum variation in absolute bandwidth and Q will be presented. A novel method using dual-mode cavities to create transmission zeros, a folded ridge waveguide dual-band tunable bandstop filter, and a filter using a resonant inverter structure will also be presented.

This session presents latest developments on continuously tunable phase shifters based on semiconductors as well as tunable materials. Furthermore, new tuning techniques based on liquid metals and ferrites for nonreciprocal transmission lines, resonators and switches are shown.

This session is concerned with all-polarizations-enabled high-Q quasi-optical grating interfaces, wide W-band waveguide-to-planar line transitions, and 3-D printed hollow waveguide structures. Theoretical and experimental results are discussed and presented. Design aspects and topological features are exploited.

In this session, wideband, reconfigurable, compact, and multiway power dividers, baluns, and magic-T are proposed and implemented with applied novel techniques including folded inductor on CMOS, defected ground structure, self-packaged SISL, and compensation shield structure for emerging 5G, WLAN, and multiband wireless communication systems applications.

Microwave Acoustic Resonators and Filters are key components in the RF frontend carrier aggreation architectures in mobile phones for frequency duplexing and filtering. Laterally excited bulk wave and fin bulk resonators are attractive for 5G applications. For full-duplex architectures non-reciprocal acoustic filters and acoustic delay-element-based sequentially switched delay-line circulators are presented. Finally, tunable frequency agile resonators are presented with a potential to reduce the ever increasing complexity of the RF frontends.

This session presents the latest results in passive components. The topics range from material level to the component level. Novel methods to implement classic components such as switches, phase shifters, circulators and hybrids are discussed in this session. The session features four papers. Wide-bandwidth designs and low-loss designs are realized in different technologies, such as printed circuit boards and waveguides.

This session includes the latest advances in control materials for RF front-ends including application of phase change, thin-film ferroelectric and ferrites for switches matrices, duplexers and frequency selective limiters and switchable stacked crystal filters.

This session will provide an overview of recent research findings on the realization of substrate integrated waveguide (SIW)-based bandpass filters for a wide range of applications covering frequencies as low as wireless LAN to millimeter-wave bands. The session will focus on both new design aspects as well as novel integration schemes.

This session covers advanced MEMS resonators, oscillators, and impedance tuners, as well as linearity measurement techniques well-suited to the high linearity performance achieved by MEMS switch technology. It discusses solutions that use a range of materials such as ScAIN, silicon-ceramic composite substrates, silicon-on-insulator substrates, and commercially-available components.

In this session, a filter synthesis-based frequency dependent coupling scheme for dual-band filters in presented. A multi-band differential bandpass filter using common-mode suppression for higher stopband rejection and a multi-band bandpass filter design using a reflected group delay method are featured. Next, an absorptive filter using a complementary duplexer is introduced for a negative group delay response. Finally, a substrate integrated waveguide (SIW) filter is described, giving size reduction for mm-wave applications.

Advances on non-planar filters and multiplexers technologies and design techniques

Advances on non-planar filters technologies and design techniques