RF PCB Filters and Stubs

Create filters and stubs for use in frequency dependent circuits

Create filters and stubs using RF PCB Toolbox™. Filters are used to select and reject a particular band of frequencies in receivers, transmitters and frequency synthesizers. Stubs are used in impedance matching circuits, filters, and resonant circuits used in oscillators and RF amplifiers.

Topics

Microstrip Band-pass filter based RF Filter Bank for microwave applications

RF Filter banks are used in many applications such as wide-band receivers that detect signals over a wide frequency band.
- STEP 1: Design and Optimization of Hairpin Filter using Pattern Search
- STEP 2: Design and Optimization of Coupled Line Filter using Surrogate Opt method
- STEP 3: Wide-band Band Pass filter using a Cascade of High Pass and Low Pass Filter
- STEP 4: Microstrip Composite Bandpass Filters for Ultra-Wideband (UWB) Wireless Communications

Featured Examples

Microstrip Ultra-Wideband Bandpass Filter with Cascaded Broadband Bandpass and Bandstop Filters

Create a compact ultra-wideband filter by connecting a broadband bandstop filter with a broadband bandpass filter.

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UWB Bandpass Filter Using Open and Short-Circuited Stubs

Create an open or short circuited stub filter using the filterStub catalog and analyze the filter using RF PCB Toolbox.

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Comparison of Lumped and Distributed EM Models for Low Pass Filters

Compare lumped and distributed electromagnetic (EM) model for low pass filters.

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Microstrip Composite Bandpass Filters for Ultra-Wideband (UWB) Wireless Communications

Design and analyze a Low Pass Filter(LPF), High Pass Filter(HPF), and cascade responses of the LPF and HPF as well as two variations of a composite filter as shown in the paper[1].

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Bandstop and Bandpass Filters with Open Microstrip Line Stubs Using Behavioral and EM Simulation

Different ways to create microstrip Line bandpass and bandstop filters using open circuit stub.

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Stepped Impedance Maximally Flat Lowpass Filter for Microwave Applications

Comparison of S-parameters of simulated and lumped element stepped impedance low pass filter for X-band applications.

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Design and Analysis of Hairpin Micro-Strip Line Bandpass Filter

Design and analyze Hairpin filter in RF PCB Toolbox™.

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Design and Analyze Compact UWB Low Pass Filter Using pcbComponent

Design and analyze a compact low pass ultra-wide band (UWB) filter based on a U-shaped complementary split ring resonator using the pcbComponent object. The filter is designed to have very low insertion loss over a wide band of frequency from low 0.1 GHz to 10.8 GHz. The design of the filter is taken from the reference [1].

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Design and Analyze Band Stop Filter Using pcbComponent

Design and analyze band stop filter using the pcbComponent object. Design the band stop filter with a fractional bandwidth (FBW) of 1.0 at a midband frequency f0 of 2.5 GHz for the band-edge frequencies of f1 = 1.25 GHz and f2 = 3.75 GHz as defined in Figure 6.11b of reference [1].

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Design and Analyze HighPass Filter Using pcbComponent

Design and analyze highpass filter using the pcbComponent object. A microstrip highpass filter is designed based on a three-pole (n = 3) Chebyshev highpass prototype with 0.1 dB passband ripple and cutoff frequency fc = 1.5 GHz.

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Circuit Model Extraction of a RF Filter

Demonstrates how to create a measuredFilfter object used for computing the Coupling Matrix, using a circuit modeling extraction of the measured Touchstone data file for a 8 pole dielectric resonator filter. The filter has a center frequency at 2114.6528 MHz, a bandwidth of 9.601 MHz and a filter order of 8.

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RF Wideband Bandpass Tunable Filter with Re-configurable In-Band Characteristics

Tunable RF and Microwave Filters are pivotal components in modern communication and radar systems, offering the unique ability to dynamically adjust their frequency response to meet varying operational demands. These filters enable the selective passage of signals within a certain frequency range while blocking others, a crucial function for optimizing system performance in real-time.

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Analysis of a Radial Stub Bandstop Filter

In this example, we use the RF PCB Toolbox's stubRadialShunt catalog element to construct and analyze the bandstop filter shown in Figs. 1 and 2 of the reference [1]. Excellent agreement is found with the results reported in [1].

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