Resonant Patents

Category: Filter/Circuit Design

This category includes methods for designing tunable filters, asymmetric filters, multi-pass band filters, design methods through elimination of circuit elements, use of network synthesis to design SAW filters, design methods that incorporate plate mode effect, filter designs with improved input impedance, designs optimized over temperature ranges, algebraic node analysis to model circuits, hierarchical cascading with Finite Element Model to simulate acoustic filters, and other topics.

Publication Number

Title

10,140,406

Network synthesis design of microwave acoustic wave filters

10,116,283

Dual passband radio frequency filter and communications device

10,110,200

Surface acoustic wave filters with substrate thickness selected from plural non-contiguous thickness ranges

10,044,399

Communications receiver using multi-band transmit blocking filters

10,038,424

Radio frequency filter, high selectivity triplexer, and communications device

10,027,310

Low-loss tunable radio frequency filter

9,985,329

Narrow-band filter having first and second resonators of different orders with resonant frequencies equal to a center frequency

9,959,378

Technique for designing acoustic microwave filters using LCR-based resonator models

9,948,277

Method of optimizing input impedance of surface acoustic wave filter

9,934,345

Network synthesis design of microwave acoustic wave filters

9,929,769

Communications receiver using multi-band transmit blocking filters

9,129,080

Low-loss tunable radio frequency filter

8,701,065

Microwave acoustic wave filters

8,751,993

Element removal design in microwave filters

9,524,360

Network synthesis design of microwave acoustic wave filters

9,208,274

Network synthesis design of microwave acoustic wave filters

9,165,101

Network synthesis design of microwave acoustic wave filters

9,038,005

Network synthesis design of microwave acoustic wave filters

8,990,742

Network synthesis design of microwave acoustic wave filters

9,369,111

Fabrication of surface acoustic wave filters having plate modes

9,374,061

Method of optimizing input impedance of surface acoustic wave filter

9,607,119

Simulating effects of temperature on acoustic microwave filters

9,405,875

Simulating effects of temperature on acoustic microwave filters

9,654,078

Technique for designing acoustic microwave filters using LCR-based resonator models

9,525,393

Technique for designing acoustic microwave filters using lcr-based resonator models 

Category: Filter/Circuit Structures

This category includes tunable filters including those with temperature based tuning, narrow pass-band filters, asymmetric filters, multi-pass band filters, filters with serrated ground conductors, filters that involve lumped capacitors, filters with extracted poles, filters with multi-ladder and series design, and other topics. 

Publication Number

Title

9,647,628

Low-loss tunable radio frequency filter

9,647,627

Low-loss tunable radio frequency filter

9,135,388

Radio frequency filter

8,922,294

Low-loss tunable radio frequency filter

7,719,382

Low-loss tunable radio frequency filter

7,639,101

Low-loss tunable radio frequency filter

9,391,351

Narrow band-pass filter with primary and secondary sets of resonators having out-of-band resonant frequencies that are different from each other

8,862,192

Narrow band-pass filter having resonators grouped into primary and secondary sets of different order

9,325,294

Microwave acoustic wave filters

9,331,669

High rejection surface acoustic wave duplexer

9,077,312

High rejection surface acoustic wave filter

9,608,595

Acoustic wave filter with enhanced rejection

9,825,611

Dual passband radio frequency filter and communications device