Miniature 1.87-dB insertion-loss V-band CMOS bandpass filter with two enhanced finite transmission zeros

2010 ◽  
Vol 52 (8) ◽  
pp. 1830-1836 ◽  
Author(s):  
Jin-Fa Chang ◽  
Yo-Sheng Lin
Keyword(s):  
Insertion Loss ◽  
Bandpass Filter ◽  
V Band ◽  
Transmission Zeros

Miniaturized Dual-Band Bandpass Filter Using Embedded Dual-Mode Resonator with Controllable Bandwidths

Frequenz ◽  
2016 ◽  
Vol 70 (9-10) ◽  
Author(s):  
Chuanming Zhu ◽  
Jin Xu ◽  
Wei Kang ◽  
Zhenxin Hu ◽  
Wen Wu
Keyword(s):  
Insertion Loss ◽  
Degrees Of Freedom ◽  
Bandpass Filter ◽  
The Other ◽  
Dual Band ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Low Insertion Loss ◽  
Multiple Transmission ◽  
Mode Resonator

AbstractIn this paper, a miniaturized dual-band bandpass filter (DB-BPF) using embedded dual-mode resonator (DMR) with controllable bandwidths is proposed. Two passbands are generated by two sets of resonators operating at two different frequencies. One set of resonators is utilized not only as the resonant elements that yield the lower passband, but also as the feeding structures with source-load coupling to excite the other to produce the upper passband. Sufficient degrees of freedom are achieved to control the center frequencies and bandwidths of two passbands. Moreover, multiple transmission zeros (TZs) are created to improve the passband selectivity of the filter. The design of the filter has been demonstrated by the measurement. The filter features not only miniaturized circuit sizes, low insertion loss, independently controllable central frequencies, but also controllable bandwidths and TZs.

Miniaturized Wideband Bandpass Filter based on Capacitor-loaded One-eighth Wavelength Coupled Line

2021 ◽  
Vol 36 (7) ◽  
pp. 865-871
Author(s):  
Jin Shi ◽  
Jiancheng Dong ◽  
Kai Xu ◽  
Lingyan Zhang
Keyword(s):  
Insertion Loss ◽  
Simple Structure ◽  
Bandpass Filter ◽  
State Of The Art ◽  
Center Frequency ◽  
Fractional Bandwidth ◽  
Coupled Line ◽  
Transmission Zeros ◽  
Compact Size ◽  
Multiple Transmission

A novel miniaturized wideband bandpass filter (BPF) using capacitor-loaded microstrip coupled line is proposed. The capacitors are loaded in parallel and series to the coupled line, which makes the filter just require one one-eighth wavelength coupled line and achieve filtering response with multiple transmission poles (TPs) and transmission zeros (TZs). Compared with the state-of-the-art microstrip wideband BPFs, the proposed filter has the advantages of compact size and simple structure. A prototype centered at 1.47 GHz with the 3-dB fractional bandwidth of 86.5% is demonstrated, which exhibits the compact size of 0.003λ2 g (λg is the guided wavelength at the center frequency) and the minimum insertion loss of 0.37 dB.

scholarly journals A Compact Dual-Mode Bandpass Filter with High Out-of-Band Suppression Using a Stub-Loaded Resonator Based on the GaAs IPD Process

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 712 ◽  
Author(s):  
Wei Zhang ◽  
Zhao Yao ◽  
Jie Zhang ◽  
Eun Seong Kim ◽  
Nam Young Kim
Keyword(s):  
Insertion Loss ◽  
High Performance ◽  
Return Loss ◽  
Bandpass Filter ◽  
Open Loop ◽  
Fabrication Process ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Semiconductor Fabrication ◽  
Device Size

In this letter, a compact dual-mode bandpass filter (BPF) with an ultra-wide stopband that employs two folded open-loop resonators (FOLRs) and stub-loaded resonators (SLRs) is proposed. The dual-mode resonators are optimized by loading two SLRs onto the folded open-loop resonators, and this process is analyzed using the dual-mode theory. To miniaturize the device size and increase chip performance, the proposed BPF is fabricated by a III–V compound semiconductor-fabrication process using a high-performance GaAs substrate based on the integration passivation device (IPD) fabrication process. A compact dual-mode BPF with low insertion loss and high return loss is designed and fabricated. Two extra transmission zeros (TZs) located in the high-frequency range increase the wide stopband, and the two TZs near the passband result in a higher selectivity. A resonant frequency centered at 7.45 GHz with an insertion loss of −1.21 dB and a measured return loss of higher than −23.53 dB and 3 dB fractional bandwidths of 5.8% are achieved. The stopband can be suppressed up to 20 GHz owing to the two tunable TZs resulting in higher selectivity and wideband rejection. The size of the filter was drastically optimized using a simplified architecture of two FOLRs and SLRs.

A band notch UWB bandpass filter using dual-stub-loaded multimode resonator with embedded spiral resonator

2013 ◽  
Vol 6 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Pankaj Sarkar ◽  
Ishita Rakshit ◽  
Sharmili Adhikari ◽  
Manimala Pal ◽  
Rowdra Ghatak
Keyword(s):  
Insertion Loss ◽  
Close Agreement ◽  
Bandpass Filter ◽  
Stop Band ◽  
Ultra Wideband ◽  
Band Edge ◽  
Electromagnetic Simulation ◽  
Transmission Zeros ◽  
Full Wave ◽  
Sharp Band

This paper presents a band-notched ultra-wideband bandpass filter by loading a short stub and an asymmetric step impedance stub in a uniform impedance resonator. The passband extends from 3.04 to 10.8 GHz frequency. The multimode resonator provides a sharp band edge with measured transmission zeros at 2.59 and 13 GHz. The later one is due to source load coupling. The passband insertion loss is within 1.5 dB. The embedded spiral resonator introduces a notch at 5.25 GHz with attenuation of 15 dB. The filter exhibits a wide stop band till 15 GHz. The in band and out of band performance obtained from full-wave electromagnetic simulation and measurement are in close agreement.

A Novel Dual-Mode Microstrip Bandpass Filter with a Pair of Equal Crossed Slots

2012 ◽  
Vol 236-237 ◽  
pp. 1383-1388
Author(s):  
Su Ping Li ◽  
Cheng Guo Chang ◽  
Wei Wu
Keyword(s):  
Insertion Loss ◽  
Bandpass Filter ◽  
Center Frequency ◽  
Low Loss ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Filter Structure ◽  
Relative Bandwidth

A novel dua1-mode microstrip bandpass filter with two triangle corner cuts and a pair of equal crossed slots is proposed. The performance of the designed filter is studied in detail. The proposed filter structure uses a single patch without coupling gaps. The center frequency is about 2.11GHz. The 3dB relative bandwidth is 9.95%, and the minimum insertion loss in the passband is 0.12dB. Two transmission zeros can be implemented on both sides of the passband. The insertion loss is l0dB within 2.04-2.18GHz. The effect on the filter’s performance by changing filter parameters is studied. The results show that this new filter can provide a low loss and make miniaturization easy.

scholarly journals CASCADED SQUARE LOOP BANDPASS FILTER WITH TRANSMISSION ZEROS FOR LONG TERM EVOLUTION (LTE)

SINERGI ◽  
2018 ◽  
Vol 22 (1) ◽  
pp. 63
Author(s):  
Iis Andini ◽  
Dian Widi Astuti ◽  
Muslim Muslim
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
External Resonator ◽  
Transmission Zeros ◽  
Term Evolution ◽  
Compact Size ◽  
Measurement Results ◽  
Resonator Method

In this paper, we present a bandpass filter that passed frequency of 1.7 GHz – 1.8 GHz. It is applied for an uplink frequency in 4G 1800MHz. This filter is created by using substrate PCB TMM-10i and has a compact size of 42 mm x 42 mm. The compact size is also important besides selectivity. The selectivity is achieved by implementing cascade square loop resonator method which generated transmission zeros. Actually, transmission zeros are obtained from the coupled resonator. The bandpass filter is designed by adding an external resonator on each square of the resonator loop and a patch to the inside of the square loop resonator. The parameter performances are simulated by HFSS. The parameter performances for return loss value is 14.24 dB at frequency 1.75 GHz and insertion loss value is 0.65 dB at frequency 1.75 GHz. By using VNA Anritsu MS 2026A, prototype bandpass filter is measured. The measurement results for return loss value is 6.8 dB and insertion loss value is 2.2 dB.

Low insertion loss wideband bandpass filter with six transmission zeros

2013 ◽  
Vol 49 (7) ◽  
pp. 477-479 ◽  
Author(s):  
Fu‐Chang Chen ◽  
Jie‐Ming Qiu ◽  
Zhi‐Han Chen ◽  
Qing‐Xin Chu
Keyword(s):  
Insertion Loss ◽  
Bandpass Filter ◽  
Transmission Zeros ◽  
Low Insertion Loss

scholarly journals Riset Band Pass Filter Mikrostrip – State of the Art

2017 ◽  
Vol 6 (2) ◽  
pp. 123
Author(s):  
Mudrik Alaydrus
Keyword(s):  
Insertion Loss ◽  
Bandpass Filter ◽  
State Of The Art ◽  
Open Loop ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Transmission Zeros ◽  
Band Pass

Riset bandpass filter telah mengalami perjalanan panjang, seiring dengan perkembangan teknologi wireless dan aplikasi sensor serta radar. Sampai dengan pertengahan 2015 ditemukan sangat banyak riset tentang bandpass filter di pelbagai publikasi yang ada. Dasar perancangan bandpass filter didominasi dengan metoda insertion loss yang menggunakan aproksimasi Butterworth, Chebyshev dan Elliptis. Realisasi dari elemen yang muncul dari aproksimasi di atas diimplementasikan dalam bentuk penggandengan beberapa resonator. Resonator yang tergandeng ujung (end-coupled) dan tergandeng parallel (parallel-coupled) memberikan realisasi fisik dari penggandengan langsung, sedangkan untuk penggandengan silang digunakan open-loop resonator. Modifikasi filter dengan open-loop resonator digunakan untuk merancang dual bandpass filter dengan mengorbankan hilangnya transmission zeros.

Sign in / Sign up

Export Citation Format

Share Document