Transmitter Section for Transceiver ICs

Product Specifications

Technical details and manufacturing context for Transmitter Section

Definition

Within a transceiver integrated circuit (IC), the transmitter section is a critical functional block that handles the transmission path. It typically includes components such as a local oscillator, modulator, power amplifier, and filtering circuits. This section converts baseband digital or analog signals into modulated RF signals at the desired frequency and power level for wireless communication through an antenna.

The transmitter section is designed for use in wireless communication systems, particularly those operating in the sub-6 GHz frequency range, covering bands for 5G and Wi-Fi. It supports modulation bandwidths from 20 to 160 MHz, accommodating standards such as 802.11ax and 5G NR. The section is fabricated using semiconductor materials including silicon (Si), gallium arsenide (GaAs), and silicon-germanium (SiGe), which influence performance characteristics.

Key electrical parameters include an operating frequency range of 0.1–6 GHz, output power adjustable from 0 to 10 dBm via digital control, and an error vector magnitude (EVM) of ≤ -30 dB for 64-QAM at 20 MHz bandwidth. The supply voltage ranges from 1.8 to 3.3 V, with a single supply and internal low-dropout regulator (LDO). Current consumption in transmit mode is 50–150 mA at maximum output power. The operating temperature range is -40 to 85°C, suitable for industrial-grade applications. Phase noise at 1 MHz offset is -110 to -100 dBc/Hz at a 2.4 GHz carrier. The output impedance is 50 ohms, single-ended. The package type is QFN-32, measuring 5×5 mm, and is RoHS compliant.

When selecting or verifying a transmitter section, it is essential to confirm model-specific values and standards with the legal manufacturer or supplier, as the listed parameters are reference ranges for directory purposes. The section's performance must be validated for the intended application, including compliance with relevant communication standards.

Working Principle

The transmitter section operates by first generating a stable carrier frequency using a local oscillator (e.g., a phase-locked loop). The information-bearing baseband signal is then modulated onto this carrier (using techniques like amplitude, frequency, or phase modulation). The modulated signal is amplified by a power amplifier to achieve the required transmission power and filtered to remove unwanted harmonics before being sent to the antenna.

Common Materials

Silicon (Si), Gallium Arsenide (GaAs), Silicon-Germanium (SiGe)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Frequency Range	0.1–6 GHz	Covers sub-6 GHz bands for 5G and Wi-Fi.
Output Power	0–10 dBm	Adjustable via digital control.
EVM (Error Vector Magnitude)	≤ -30 dB	For 64-QAM at 20 MHz bandwidth.
Supply Voltage	1.8–3.3 V	Single supply, internal LDO.
Current Consumption (TX mode)	50–150 mA	At max output power.
Operating Temperature Range	-40–85 °C	Industrial grade.
Modulation Bandwidth	20–160 MHz	Supports 802.11ax and 5G NR.
Phase Noise (at 1 MHz offset)	-110–-100 dBc/Hz	At 2.4 GHz carrier.
Output Impedance	50 Ω	Single-ended.
Package Type	QFN-32	5×5 mm, RoHS compliant.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Local Oscillator (LO)
Generates a stable, high-frequency carrier signal.

Material: Silicon (CMOS), GaAs
Modulator
Imprints the baseband information onto the carrier wave.

Material: Silicon
Power Amplifier (PA)
Boosts the power of the modulated RF signal to the level required for transmission.

Material: GaAs, GaN, SiGe
Filter
Removes unwanted frequency components (harmonics, noise) from the transmitted signal.

Material: SAW/BAW filter materials (e.g., Lithium Niobate), on-chip LC components

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Transceiver ICs

View system integration details

Manufacturers of Transmitter Section

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Frequently Asked Questions

What is the operating frequency range of the transmitter section?

The transmitter section covers an operating frequency range of 0.1 to 6 GHz, which includes sub-6 GHz bands for 5G and Wi-Fi. However, the exact frequency range may vary depending on the specific model and configuration, so it is essential to verify with the manufacturer.

What is the typical output power range?

The output power is adjustable from 0 to 10 dBm via digital control. This range is a reference; the actual output power capability may differ based on the specific implementation and operating conditions. Always consult the datasheet or manufacturer for precise values.

What package types are available?

The transmitter section is available in a QFN-32 package with dimensions of 5×5 mm, and it is RoHS compliant. Other package options may exist for different models, so it is recommended to check with the supplier for available variants.

What is the supply voltage requirement?

The supply voltage ranges from 1.8 to 3.3 V, with a single supply and an internal low-dropout regulator (LDO). This allows for flexible power supply design, but the exact voltage and current requirements should be confirmed with the manufacturer for the specific model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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voltage:	1.8V to 3.6V
other spec:	Impedance: 50Ω, EVM: <3%
temperature:	-40°C to +125°C
output power:	-20dBm to +23dBm
frequency range:	400MHz to 6GHz

Transmitter Section

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards