Broadband receiver data need colour corrections applying to correct for the different source spectra across their wide bandwidths. The full integration over a bandpass may be computationally expensive and redundant when repeated many times. Colour can applied, however, using simple quadratic fit based on instead. Here we describe fastcc interpcc, quick Python IDL codes that return, respectively...

The bandpass filters are most widely used in radio frequency (RF) front end equipment of the microwave wireless communication systems. The parallel-coupled line structures are popular for the bandpass filters such as the parallel-coupled lines cascaded together [1]. The parallelcoupled lines combined with open-stub lines for harmonic suppression improvement was also proposed [2]. Furthermore, s...

In radio communications, modulation can be described as the process of conveying a message signal by superimposing an information bearing signal onto a carrier signal by varying the signal characteristic [31–33]. Modulation is the process of changing a higher frequency signal in proportion to a lower frequency one or vise versa. The higher frequency signal is referred to as the carrier signal a...

An efficient means for constructing a narrow bandpass filter for an analogto-digital converter based on a bandpass sigma-delta modulator is presented. It is shown that the filter can be made with very simple hardware, comparable to that required by an analog-to-digital converter using standard lowpass sigma-delta modulation. Introduction Bandpass sigma-delta modulation [1] is a variant of the m...

A dual-band bandpass filter with wide and highly attenuated stopbands is designed using parallel coupled microstrip line (PCML) and stepped-impedance-resonators (SIRs). The proposed filter is composed of a pair of highly coupled PCML-SIR structure and a central resonator using a low impedance rectangular microstrip. Initially, the wide dual-band performance is achieved by creating a transmissio...

A compact ultra-wideband (UWB) bandpass filter (BPF) with wide passband using defected ground structure (DGS) is proposed. The proposed UWB filter is constructed by cascading a high pass filter (HPF) and a lowpass filter (LPF). HPF with short-circuited stubs is used to realize the lower stopband and a LPF is used to attenuate the upper stopband. In order to make the filter size compact, DGS tec...