A wide-band linear amplitude modulator for polar transmitters based on the concept of interleaving delta modulation

Nagle, P.; Burton, D.P.; Heaney, E.; McGrath, F.

doi:10.1109/jssc.2002.804351

Cited by 32 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polar modulators that offer the capability of achieving high linearity and high efficiency simultaneously in wireless transmitter, in its digital implementation also require RPC. Polar transmission utilizes envelope and phase component to represent the digital symbols instead of the conventional I/Q format [6]. In addition, RPC is required in imaging systems and other DSP algorithms.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Design of Rectangular to Polar Converter using Linear Convergence

Agrawal¹,

Mehra²

2012

IJCA

View full text Add to dashboard Cite

In recent years, the growth of multimedia services and applications in digital data transmission has led to ever increasing demands of effective data transmission over the wired as well as wireless communication systems. Since digital communication systems need to deal with multimode and multiband operations on complex signals many-a-times, there is always a requirement of an efficient method for rapid phase and magnitude extraction. The proposed Rectangular to Polar Converter (RPC) has been implemented using fully parallel CORDIC, a Linear Convergence Algorithm, in vectoring mode. The design is synthesized with ISE 10.1 software, and implemented on 2v3000fg676-4. Synthesis results show that the design is able to work at 177.620 MHz with less hardware requirements. General TermsA rectangular to polar conversion is required so that transmitters must accommodate constant envelop signals as well as non-constant envelop signals to achieve multimode and multiband operations. In burst-mode communication systems, a rapid carrier is crucial. Hence a fast rectangular-topolar conversion is needed. Delay-matching of phase as well as amplitude is crucial so that the restoration of the transmitted data at the receiver may be not be imperfect if the delays are unmatched.

show abstract

Section: Introductionmentioning

confidence: 99%

Reconfigurable Design of Rectangular to Polar Converter using Linear Convergence

Agrawal¹,

Mehra²

2012

IJCA

View full text Add to dashboard Cite

show abstract

“…If this is to become a reality, the RFIC and the PA have to become more flexible in accommodating modulated signals at RF frequencies with different characteristics such as frequency, bandwidth and peak to average power ratio statistics. This has to be done while preserving the linearity of the transmission and making it as efficient as possible in usage of power from the battery [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A 27dBm, SiGe-BiCMOS transmitter with 62% PAE and operation class control for large-bandwidth polar modulation and pulse-width modulated signals

Sanduleanu

Aditham

2008

2008 IEEE Radio Frequency Integrated Circuits Symposium

View full text Add to dashboard Cite

This paper presents a SiGe BiCMOS transmitter for large bandwidth Polar Modulation and PWM signals. For flexibility, the transmitter presented in the paper has an externally controllable class of operation. Fabricated in a SiGe BiCMOS process (QUBIC4G), the measured saturated output power of the transmitter is 27dBm and the measured PAE is 62%. It features an IMD3 of -30dBc up to 25dBm peak envelope power and fulfills the spectral mask for WLAN 802.11.a signals.

show abstract

“…Conventional amplitude modulation techniques are based on the modulation of the power supply [2]. One way to achieve this is to use supply chopping technique as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

A Novel DAC Based Switching Power Amplifier for Polar Transmitter

Shameli

Safarian

Rofougaran

et al. 2006

IEEE Custom Integrated Circuits Conference 2006

View full text Add to dashboard Cite

Abstract⎯ A novel switching power amplifier based on the concept of digital to analog converter (DAC) is presented for polar transmitter architecture. The novel idea in this amplifier is to generate a current proportional to the amplitude modulation signal and the power control bits. The current is then upconverted to the frequency of interest using switching transistors. In this paper, we demonstrate that the performance of the proposed circuit is superior compare to the existing power amplifiers designed for polar transmitter. The measurement results show maximum output power of 27.8dBm with power efficiency of 34%. Moreover, the amplifier exhibits amplitude modulation bandwidth of 4.2MHz and 62dB power control dynamic range. The circuit is fabricated in CMOS 0.18µm process with 3.3V power supply.

show abstract

A wide-band linear amplitude modulator for polar transmitters based on the concept of interleaving delta modulation

Cited by 32 publications

References 4 publications

Reconfigurable Design of Rectangular to Polar Converter using Linear Convergence

Reconfigurable Design of Rectangular to Polar Converter using Linear Convergence

A 27dBm, SiGe-BiCMOS transmitter with 62% PAE and operation class control for large-bandwidth polar modulation and pulse-width modulated signals

A Novel DAC Based Switching Power Amplifier for Polar Transmitter

Contact Info

Product

Resources

About