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The Voltage Conveyor (VCII) is the dual of the second generation Current Conveyor (CCII), and has received only a cursory attention in the literature, probably for lack of interesting applications. The VCII has a current buffer between Y and X terminals, and a voltage buffer between X and Z terminals. In this way, it makes it easier to sum (current) signals at the Y node, whereas CCIIs make it easier...
This paper presents a transformer-less duplexer based on 2-port N-path bandpass filters (BPFs). The proposed duplexer consists of two quarter-wavelength transmission lines, and an N-path balun BPF which provides an out-of-band (OOB) blocker support for the receiver. A 0.45–0.65 GHz duplexer is implemented in a CMOS 65 nm technology. The duplexer occupies an active area of ≈ 0.7 mm2. In post-layout...
Approach to development of calculation methods of passive microstrip devices with symmetric structure based on the input impedances of partial schemes received by use of even-odd excitation of symmetric multiport are offered in the work. The expressions relating the input impedances of partial schemes of the transforming four-pole circuit and the directional four-port circuit with their scattering...
A novel single input multiple output (SIMO) voltage-mode (VM) digitally programmable universal filter (DPUF) is proposed in this paper. The proposed biquad is realized using digitally programmable current feedback amplifier (DPCFA) as main analog building block (ABB). The biquad can concurrently simulate all filters functions without requiring any alteration in its configurations all the filter parameters...
This paper presents a novel kind of dual-polarized patch antennas with high-selectivity and low cross-polarization performance. The proposed antenna is mainly composed of a feeding network, a driven patch and a stacked patch. The feeding network consists of two orthogonal H-shaped lines that coupled to the driven patch, each for one polarization. The H-shaped lines ensure a sharp roll-off rate at...
Recently a new feature was added to the NRL 2.5D Klystron code called TESLA in collaboration with CPI. The feature involves modeling a klystron with a filter-loaded output cavity. The latter replaces a conventional unloaded single-gap output cavity in a klystron when wide bandwidth is needed. The feature was first evaluated by comparing with cold test data for a stand-alone output cavity. Later the...
This work presents a novel arbitrary dual-band Chireix power combining network, for which bandpass filter theory is extended to achieve dual-band performance. The two frequencies (4.4 GHz and 5.2 GHz) at which the Chireix outphasing combiner is tuned are designed by selecting the two cutoff frequencies of a bandpass filter. The filter is implemented using a modified stepped impedance structure. Synthesis,...
In modern electronic communication systems, with increasing data rates over the circuits, two critical problems have emerged: crosstalk and electromagnetic interference. The first effect is produced by the coupling of different signals from adjacent transmission lines within the system; the second is generated when external energy, radiated from another electronic device, is coupled to the communication...
The present work proposes a novel DTMOS based current controlled conveyor (CCCII). The proposed DTMOS technique reduces the power consumption, reduces the voltage requirement to ±0.5V, and enhances the linearity of CCCII with low circuit complexity. The performance and validity of the proposed circuit has been verified by using it in a multifunction biquad filter using PSPICE, 0.18μm CMOS technology...
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