Sources of Phase Error and Design Considerations for Silicon-Based Monolithic High-Pass/Low-Pass Microwave Phase Shifters

2006 ◽  
Vol 54 (12) ◽  
pp. 4032-4040 ◽  
Author(s):  
Matthew A. Morton ◽  
Jonathan P. Comeau ◽  
John D. Cressler ◽  
Mark Mitchell ◽  
John Papapolymerou
Keyword(s):  
Phase Error ◽  
Phase Shifters ◽  
Design Considerations ◽  
Low Pass ◽  
Silicon Based ◽  
High Pass

5 bit, silicon-based, X-band phase shifter using a hybrid pi/t high-pass/low-pass topology

2008 ◽  
Vol 2 (1) ◽  
pp. 19-22 ◽  
Author(s):  
M.A. Morton ◽  
J.D. Cressler ◽  
J.P. Comeau ◽  
J. Papapolymerou ◽  
M. Mitchell
Keyword(s):  
Phase Shifter ◽  
X Band ◽  
Low Pass ◽  
Silicon Based ◽  
High Pass

Design of Phase Shifters with Ladder Stubs Via Real Frequency Technique

2020 ◽  
pp. 2150112
Author(s):  
Metin Şengül
Keyword(s):  
Phase Shifter ◽  
Characteristic Impedance ◽  
Limited Range ◽  
Phase Shifters ◽  
New Approach ◽  
High Frequencies ◽  
Low Pass ◽  
Lumped Elements ◽  
Section Type ◽  
High Pass

Generally at high frequencies, lumped-elements are not preferred because of their limited range of values. Therefore, in this work, a kind of phase shifter formed with ladder stubs is studied and a new approach to design phase shifter’s low pass and high pass sections which are composed of series or shunt connected open-ended or short-ended stubs is proposed. In the approach, since the main focus is to form low pass and high pass two-port sections, switching process is not considered. First, the designer selects the section type and the total number of stubs in the sections; it is not necessary to fix the two-port section topologies and not necessary to derive the characteristic impedance and delay expressions for the stubs. In the example, 5-stub two-port sections of a [Formula: see text] phase shifter are designed by means of the proposed approach.

Broadband Five-Port Direct Receiver Based on Low-Pass and High-Pass Phase Shifters

2010 ◽  
Vol 58 (4) ◽  
pp. 849-853 ◽  
Author(s):  
Pablo Perez-Lara ◽  
Iigo Molina-Fernandez ◽  
J Gonzalo Wanguemert-Perez ◽  
Antonio Rueda-Perez
Keyword(s):  
Phase Shifters ◽  
Low Pass ◽  
High Pass

CURRENT-MODE ACTIVE-C FILTER EMPLOYING REDUCED NUMBER OF CCCII+s

2007 ◽  
Vol 16 (04) ◽  
pp. 507-516 ◽  
Author(s):  
SHAHRAM MINAEI ◽  
ERKAN YUCE
Keyword(s):  
Current Mode ◽  
Pass Band ◽  
Passive Component ◽  
Resistorless Filter ◽  
Low Pass ◽  
Component Matching ◽  
Band Pass ◽  
High Output Impedance ◽  
Quality Factor Q ◽  
High Pass

In this paper, a universal current-mode second-order active-C filter for simultaneously realizing low-pass, band-pass and high-pass responses is proposed. The presented filter employs only three plus-type second-generation current-controlled conveyors (CCCII+s). This filter needs no critical active and passive component matching conditions and no additional active and passive elements for realizing high output impedance low-pass, band-pass and high-pass characteristics. The angular resonance frequency (ω0) and quality factor (Q) of the proposed resistorless filter can be tuned electronically. To verify the theoretical analysis and to exhibit the performance of the proposed filter, it is simulated with SPICE program.

NOVEL VOLTAGE-MODE UNIVERSAL FILTER USING ONLY TWO CDBAs

2005 ◽  
Vol 14 (01) ◽  
pp. 159-164 ◽  
Author(s):  
SUDHANSHU MAHESHWARI ◽  
IQBAL A. KHAN
Keyword(s):  
Pass Band ◽  
Universal Filter ◽  
Input Selection ◽  
Voltage Mode ◽  
Single Output ◽  
Control Computer ◽  
Low Pass ◽  
Band Pass ◽  
Pass Through ◽  
High Pass

A novel voltage-mode universal filter employing only two current differencing buffered amplifiers (CDBAs) is proposed. The filter uses four inputs and single output to realize six responses, viz. low-pass, high-pass, inverting band-pass, noninverting band-pass, band-elimination, and all-pass through input selection with independent pole-Q control. Computer simulation results using SPICE are also given to verify the theory.

A new design of multi-bit RF MEMS distributed phase shifters for phase error reduction

2012 ◽  
Vol 19 (2) ◽  
pp. 237-244 ◽  
Author(s):  
Y. J. Du ◽  
J. F. Bao ◽  
J. W. Jiang
Keyword(s):  
Rf Mems ◽  
Phase Error ◽  
Error Reduction ◽  
Phase Shifters

Coding of temporal parameters of complex sounds by frog auditory nerve fibers

1991 ◽  
Vol 65 (3) ◽  
pp. 424-445 ◽  
Author(s):  
A. S. Feng ◽  
J. C. Hall ◽  
S. Siddique
Keyword(s):  
Auditory Nerve ◽  
Transfer Functions ◽  
Nerve Fibers ◽  
Spike Count ◽  
Complex Sounds ◽  
Temporal Parameters ◽  
Low Pass ◽  
The Mean ◽  
Auditory Nerve Fibers ◽  
High Pass

1. Physiological recordings were made from single auditory fibers in the frog eighth nerve to determine quantitatively how the different behaviorally relevant temporal parameters (the signal rise-fall time, duration, and rate of amplitude modulation) of complex sounds are encoded in the auditory periphery. Individual temporal parameters were varied. Response functions (RFs) were constructed with respect to each of these parameters using each unit's best excitatory frequency (BF) as the carrier. 2. In response to a change in signal rise-fall time, auditory nerve fibers showed little change in the mean spike count or firing rate, i.e., all fibers displayed ALL-PASS RFrfts. But the transient components, particularly the early phasic component, of responses varied with rise-fall times; these components were more pronounced in the responses to stimuli with shorter rise-fall times. 3. In response to an increase in signal duration, auditory nerve fibers showed a corresponding increase in firing duration and thus in the mean spike count, giving rise to HIGH-PASS RFdurs. The shape of response curves differed among fibers; the difference appeared to be related to the fiber's temporal adaptation characteristic. When the firing rate was measured, all fibers displayed higher mean firing rates in response to shorter duration stimuli than they did to longer duration stimuli, thus giving rise to LOW-PASS response functions. 4. To determine the response transfer functions to modulation rate, pulsed (PAM) and sinusoidally (SAM) amplitude-modulated signals were used. These signals differed substantially in terms of their envelopes and how they varied with AM rate. Data were analyzed by 1) plotting spike counts against the AM rate to derive modulation transfer functions (MTFspks) and 2) plotting synchronization coefficients (SCs) against the AM rate to generate MTFscs. 5. In response to PAM stimuli, all fibers showed an increase in mean spike count with modulation frequency over the range examined, giving rise to HIGH-PASS MTFspks. 6. For SAM stimuli, the average energy and duty cycle are independent of AM rate. Most (79%) auditory fibers showed little selectivity for AM rate over a range of 5-400 Hz, giving rise to ALL-PASS MTFspks. The remaining auditory fibers displayed LOW-PASS MTFspks, i.e., there was a distinct decline in the mean spike count with increasing AM rate. 7. In response to PAM stimuli, most fibers showed good response synchrony at low AM rates but the SC declined with an increase in the AM rate (i.e., LOW-PASS MTFscs). The cut-off frequency was typically very high, averaging 90 pulses/s.(ABSTRACT TRUNCATED AT 400 WORDS)

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