UGC NET Electronic Science Syllabus 2025-26 — Complete Unit-wise Guide

Electronic Science is one of the core technical subjects under UGC NET, ideal for candidates who have studied Electronics Engineering, Applied Electronics, or Instrumentation at the graduate/postgraduate level. This article provides a comprehensive, unit-wise breakdown of the 2025–26 syllabus as per the latest NTA guidelines.

Exam Pattern — UGC NET Electronic Science

Unit 1: Electronic Devices and Circuits

This foundational unit covers semiconductor physics, diode characteristics, and transistor operations — essential for all subsequent units.

Key Topics

• Semiconductor Physics: Energy bands, intrinsic and extrinsic semiconductors, carrier transport — drift, diffusion, Hall effect, continuity equation.
• Junction Diodes: p-n junction formation, I-V characteristics, ideal vs. real diode, small-signal model, rectifiers (half-wave, full-wave, bridge), clippers, clampers, Zener diode regulators.
• Bipolar Junction Transistor (BJT): NPN/PNP, modes of operation, common-emitter/base/collector configurations, h-parameters, biasing circuits (fixed bias, self-bias, voltage divider bias), small-signal equivalent circuits, Ebers-Moll model.
• Field-Effect Transistors: JFET characteristics (ID-VDS), MOSFET (enhancement & depletion types), CMOS, biasing, pinch-off voltage, transconductance.
• Special Devices: SCR (thyristor), DIAC, TRIAC, UJT — operating principles and applications.
• Optoelectronic Devices: LED, photodiode, phototransistor, solar cell, LDR, optocoupler.

Unit 2: Analogue Circuits

Amplifier design, feedback theory, and operational amplifiers form the backbone of analogue electronics.

• Amplifier Analysis: Single-stage and multistage BJT/FET amplifiers, voltage gain, input/output impedance, bandwidth, frequency response, Bode plots, gain-bandwidth product.
• Feedback Amplifiers: Types of feedback (series-shunt, series-series, shunt-shunt, shunt-series), effect on gain, bandwidth, input/output impedance, stability; Barkhausen criterion.
• Oscillators: RC phase-shift, Wien bridge, Hartley, Colpitts, Clapp, crystal oscillators; frequency stability.
• Power Amplifiers: Class A, B, AB, C, D; push-pull configuration, crossover distortion, efficiency.
• Operational Amplifiers: Ideal op-amp parameters, inverting/non-inverting amplifiers, summer, integrator, differentiator, instrumentation amplifier, comparator, Schmitt trigger, precision rectifier, log/antilog amplifiers.
• Active Filters: Butterworth, Chebyshev, Bessel; first- and second-order low-pass, high-pass, band-pass, notch filters using op-amps.
• Voltage Regulators: Series and shunt regulators, 78xx/79xx ICs, LM317 adjustable regulator, fold-back current limiting, switch-mode power supplies (SMPS) — buck, boost, buck-boost.

Unit 3: Digital Electronics

Boolean algebra through synchronous sequential circuits — the digital foundations of modern computing.

• Number Systems: Binary, octal, hexadecimal; BCD, Gray code, excess-3; arithmetic operations, 1's/2's complement.
• Boolean Algebra and Logic Gates: Boolean theorems, De Morgan's laws, SOP/POS forms, Karnaugh map minimisation (up to 6 variables), Quine-McCluskey method.
• Combinational Circuits: Multiplexer, demultiplexer, decoder, encoder, priority encoder, adder (half/full), subtractor, carry-look-ahead adder, BCD adder, magnitude comparator, parity generator/checker.
• Sequential Circuits: SR, D, JK, T flip-flops; master-slave configurations; timing diagrams; registers (SISO, SIPO, PISO, PIPO); ripple and synchronous counters; modulo-N counters; ring and Johnson counters.
• Programmable Logic: PLA, PAL, CPLD, FPGA — architecture and programming basics.
• Memory Devices: SRAM, DRAM, ROM, PROM, EPROM, EEPROM, Flash; memory expansion; address decoding.
• Logic Families: TTL (74 series), ECL, CMOS — noise margin, fan-out, propagation delay, power dissipation, interfacing.

Unit 4: Microprocessors and Microcontrollers

• Intel 8085: Architecture (ALU, registers, flags), instruction set, addressing modes (immediate, register, direct, indirect), timing diagrams, interrupts (TRAP, RST 7.5/6.5/5.5, INTR), DMA, memory interfacing.
• Intel 8086: 16-bit architecture, segmented memory model, BIU and EU, pipeline, instruction set extensions (multiply, divide, string operations), minimum and maximum modes.
• 8051 Microcontroller: Internal architecture (4 KB ROM, 128 B RAM, 2 timers, 4 ports, UART), instruction set, memory organisation (SFRs), interrupts, serial communication, timer/counter modes.
• Advanced Architectures: RISC vs. CISC; ARM Cortex-M overview; pipelining (hazards — structural, data, control); cache memory (direct-mapped, associative, set-associative); virtual memory concepts.
• Interfacing: ADC, DAC, keyboard, display (7-segment, LCD), I2C, SPI, USB basics; programmable peripheral ICs (8255 PPI, 8254 timer, 8259 interrupt controller).

Unit 5: Signals and Systems

• Signals Classification: Continuous-time (CT) vs. discrete-time (DT); deterministic vs. random; energy vs. power signals; even/odd decomposition.
• System Properties: Linearity, time-invariance, causality, stability (BIBO); LTI system representation.
• Fourier Analysis: Fourier series (trigonometric and exponential forms); Fourier transform — properties (linearity, time-shift, frequency-shift, convolution, Parseval's theorem); DFT and FFT algorithm (radix-2).
• Laplace Transform: Definition, region of convergence, properties, inverse Laplace; transfer function, poles and zeros, system stability from pole location.
• Z-Transform: Definition, ROC, properties, inverse Z-transform (partial fractions, power series); analysis of discrete-time LTI systems.
• Sampling: Nyquist-Shannon sampling theorem, aliasing, anti-aliasing filter, reconstruction; practical ADC/DAC specifications.
• Correlation and Convolution: Cross-correlation, auto-correlation, power spectral density; convolution integral and sum.

Unit 6: Control Systems

• System Modeling: Transfer function, block diagram algebra (reduction rules), signal flow graphs (Mason's gain formula).
• Time Domain Analysis: First- and second-order systems; step, ramp, impulse response; steady-state error; error constants (Kp, Kv, Ka); effect of poles and zeros.
• Stability Analysis: Routh-Hurwitz criterion; Nyquist criterion; gain margin, phase margin; gain crossover, phase crossover frequencies.
• Frequency Domain: Bode plots (magnitude and phase); polar plots; M and N circles; Nichols chart.
• Root Locus: Construction rules; effect of gain K; dominant poles; conditional stability.
• Compensators: Lead, lag, lead-lag compensators; PID controller — tuning (Ziegler-Nichols method).
• State-Space Analysis: State variables and equations; controllability and observability (Kalman rank conditions); state feedback and pole placement.

Unit 7: Communication Systems

• Noise: Thermal (Johnson) noise, shot noise, flicker noise; noise figure, noise temperature; SNR; cascaded systems (Friis formula).
• Analogue Modulation: AM (DSB-SC, SSB, VSB) — generation and detection; FM and PM — deviation, modulation index, Carson's rule, FM demodulators (discriminator, PLL); superheterodyne receiver.
• Digital Modulation: PCM — sampling, quantisation (uniform/non-uniform, μ-law/A-law), encoding; DPCM, delta modulation; ASK, FSK, BPSK, QPSK, QAM — BER performance; OFDM basics.
• Information Theory: Shannon's entropy, mutual information, channel capacity (Shannon-Hartley theorem), source coding (Huffman, LZW), error control coding — Hamming codes, convolutional codes, turbo codes.
• Optical Fibre Communication: Single-mode and multi-mode fibres; dispersion; attenuation; LED/laser sources; PIN/APD detectors; WDM; SONET/SDH.
• Wireless Communications: Propagation models, path loss; FDMA, TDMA, CDMA; cellular concepts (frequency reuse, handoff); GSM, 3G/4G LTE overview; antenna parameters (gain, directivity, VSWR).

Unit 8: Electromagnetic Theory

• Electrostatics: Coulomb's law, Gauss's law, electric potential, capacitance, energy density, boundary conditions.
• Magnetostatics: Biot-Savart law, Ampere's law, Faraday's law, inductance, magnetic boundary conditions.
• Maxwell's Equations: Differential and integral forms; displacement current; wave equations; plane wave propagation; skin depth; Poynting vector.
• Transmission Lines: Telegrapher's equations; characteristic impedance; reflection coefficient; VSWR; standing waves; impedance matching (quarter-wave transformer, stub matching); Smith chart.
• Waveguides: Rectangular waveguide — TE and TM modes; cutoff frequency; phase and group velocity; characteristic impedance; cavity resonators.
• Antennas: Hertzian dipole, half-wave dipole, quarter-wave monopole; antenna arrays; radiation resistance; aperture antennas (horn, parabolic); RADAR fundamentals.

Unit 9: Instrumentation and Measurement

• Measurement Concepts: Accuracy, precision, resolution, sensitivity, linearity, hysteresis, repeatability; static and dynamic errors; calibration.
• DC/AC Instruments: PMMC, moving-iron, electrodynamometer; digital multimeter (DMM); CRT and DSO oscilloscopes; spectrum analyser; frequency counter.
• Bridge Circuits: Wheatstone, Kelvin, Schering, Maxwell, Hay, Owen bridges — derivation of balance conditions and applications.
• Signal Conditioning: Amplifiers, filters, A/D converters (successive approximation, flash, sigma-delta), D/A converters (R-2R ladder, weighted resistor); sample-and-hold circuits.
• Sensors and Transducers: Resistive (RTD, thermistor, strain gauge, potentiometer); capacitive (pressure, displacement); inductive (LVDT, RVDT, synchro); piezoelectric; thermocouple; Hall sensor; load cell.
• Virtual Instrumentation: LabVIEW concepts; data acquisition (DAQ) systems; GPIB, RS-232, USB, Ethernet interfaces; IEEE 488.2.

Unit 10: Advanced Topics — VLSI and Embedded Systems

• VLSI Design Flow: Specifications → RTL design → synthesis → place-and-route → verification → fabrication; ASIC vs. FPGA; HDL (VHDL / Verilog basics).
• CMOS Fabrication: Silicon wafer; oxidation; photolithography; etching; ion implantation; CVD; metallisation; DRC and LVS.
• Combinational and Sequential VLSI Circuits: Static and dynamic CMOS; transmission gate logic; domino logic; latches and flip-flops in CMOS; clock distribution; power and timing analysis.
• Embedded Systems: Real-time operating systems (RTOS) — tasks, scheduling (RM, EDF), IPC; device drivers; bootloader; memory-mapped I/O; JTAG debugging.
• DSP Processors: Harvard architecture; MAC operation; pipelining; TMS320 series overview; FIR/IIR filter implementation on DSP.
• Emerging Areas: Internet of Things (IoT) — sensors, edge computing, MQTT; MEMS (accelerometers, gyroscopes); nanoscale CMOS challenges (short-channel effects, leakage); quantum computing basics (qubits, superposition, entanglement).

Important Books for UGC NET Electronic Science

Previous Year Paper Analysis (2019–2024)

Frequently Asked Questions

Is Electronic Science difficult for NET?

It is calculative but predictable. The syllabus is stable, and previous-year questions repeat concepts. A candidate with a strong B.Sc./B.Tech. Electronics foundation can crack it with 4–5 months of focused preparation.

Can B.Sc. Electronics students appear for UGC NET Electronic Science?

Yes. Any candidate with at least 55% marks (50% for reserved categories) in M.Sc./M.Tech. Electronics, Electronic Science, or a related discipline from a recognised university is eligible.

Is VLSI important for UGC NET Electronic Science?

It is part of Unit 10 and typically contributes 6–8 questions. Focus on CMOS logic, FPGA vs. ASIC, and basic HDL concepts rather than deep fabrication chemistry.

Are there any coaching institutes specialising in UGC NET Electronic Science?

Some online platforms (Physics Wallah, Unacademy, Gradeup/BYJU's Exam Prep) offer NET Electronics courses. Self-study with standard textbooks and previous-year papers is equally effective.

UGC NET इलेक्ट्रॉनिक साइंस सिलेबस 2025-26 — सम्पूर्ण इकाईवार मार्गदर्शिका

UGC NET इलेक्ट्रॉनिक साइंस उन अभ्यर्थियों के लिए उपयुक्त है जिन्होंने इलेक्ट्रॉनिक्स इंजीनियरिंग, एप्लाइड इलेक्ट्रॉनिक्स या इंस्ट्रूमेंटेशन में स्नातक/स्नातकोत्तर की पढ़ाई की है। इस लेख में आप NTA के नवीनतम पाठ्यक्रम के अनुसार प्रत्येक इकाई का विस्तृत विवरण पाएंगे।

परीक्षा पैटर्न — UGC NET इलेक्ट्रॉनिक साइंस

इकाई 1: इलेक्ट्रॉनिक डिवाइसेज़ और सर्किट

यह आधारभूत इकाई सेमीकंडक्टर भौतिकी, डायोड और ट्रांजिस्टर पर केंद्रित है।

प्रमुख विषय

• सेमीकंडक्टर भौतिकी: ऊर्जा बैंड, intrinsic एवं extrinsic अर्धचालक, आवेश वाहक — drift एवं diffusion, Hall प्रभाव, सातत्य समीकरण।
• p-n जंक्शन डायोड: I-V विशेषताएं, आदर्श व वास्तविक डायोड, रेक्टिफायर (half-wave, full-wave, bridge), Zener वोल्टेज नियामक।
• BJT (द्विध्रुवीय ट्रांजिस्टर): NPN/PNP, क्रियाशील मोड, common-emitter/base/collector विन्यास, h-parameters, बायसिंग परिपथ।
• FET (फील्ड-इफेक्ट ट्रांजिस्टर): JFET एवं MOSFET (enhancement व depletion), CMOS, transconductance।
• विशेष डिवाइसेज़: SCR, DIAC, TRIAC, UJT — कार्य सिद्धांत व अनुप्रयोग।
• ऑप्टोइलेक्ट्रॉनिक डिवाइसेज़: LED, फोटोडायोड, सौर सेल, optocoupler।

इकाई 2: एनालॉग सर्किट

• एम्पलीफायर विश्लेषण: एकल-स्तरीय एवं बहुस्तरीय BJT/FET एम्पलीफायर, voltage gain, input/output impedance, bandwidth, Bode plots।
• फीडबैक एम्पलीफायर: feedback के प्रकार, Barkhausen criterion, oscillator — RC, Wien bridge, Hartley, Colpitts, crystal।
• पावर एम्पलीफायर: Class A, B, AB, C, D; push-pull विन्यास, crossover distortion।
• ऑपरेशनल एम्पलीफायर (Op-Amp): आदर्श पैरामीटर, inverting/non-inverting एम्पलीफायर, summer, integrator, differentiator, comparator, Schmitt trigger।
• एक्टिव फिल्टर: Butterworth, Chebyshev — LPF, HPF, BPF, notch।
• वोल्टेज रेगुलेटर: 78xx/79xx ICs, LM317, SMPS — buck, boost, buck-boost।

इकाई 3: डिजिटल इलेक्ट्रॉनिक्स

• संख्या प्रणाली: Binary, octal, hexadecimal; BCD, Gray code; 1's/2's complement।
• बूलियन बीजगणित: De Morgan नियम, K-map (6 variables तक), Quine-McCluskey।
• संयोजन परिपथ: MUX, DEMUX, decoder, encoder, adder, subtractor, comparator, parity generator।
• अनुक्रमिक परिपथ: SR, D, JK, T flip-flops; registers; ripple व synchronous counters; ring/Johnson counters।
• मेमोरी डिवाइसेज़: SRAM, DRAM, ROM, EPROM, EEPROM, Flash।
• लॉजिक परिवार: TTL, ECL, CMOS — noise margin, fan-out, propagation delay।

इकाई 4: माइक्रोप्रोसेसर और माइक्रोकंट्रोलर

• Intel 8085: आर्किटेक्चर (ALU, registers, flags), instruction set, addressing modes, interrupts (TRAP, RST 7.5/6.5/5.5, INTR), DMA।
• Intel 8086: 16-bit आर्किटेक्चर, segmented memory model, BIU और EU, पाइपलाइन।
• 8051 माइक्रोकंट्रोलर: Internal architecture (4 KB ROM, 128 B RAM, 2 timers, 4 ports, UART), SFRs, interrupts, serial communication।
• RISC vs. CISC: ARM Cortex-M, pipelining hazards, cache memory, virtual memory।
• इंटरफेसिंग: ADC, DAC, keyboard, LCD; I2C, SPI, USB; 8255, 8254, 8259 ICs।

इकाई 5: सिग्नल और सिस्टम

• सिग्नल वर्गीकरण: CT vs. DT; deterministic vs. random; energy vs. power signals।
• Fourier विश्लेषण: Fourier series, Fourier transform — properties, DFT और FFT (radix-2 algorithm)।
• Laplace Transform: Definition, ROC, transfer function, poles-zeros, stability।
• Z-Transform: Definition, ROC, discrete-time LTI system analysis।
• Sampling: Nyquist-Shannon theorem, aliasing, anti-aliasing filter, ADC/DAC specifications।

इकाई 6: नियंत्रण प्रणाली (Control Systems)

• सिस्टम मॉडलिंग: Transfer function, block diagram algebra, signal flow graph, Mason's gain formula।
• समय क्षेत्र विश्लेषण: प्रथम/द्वितीय-क्रम सिस्टम, step/ramp/impulse response, steady-state error।
• स्थिरता विश्लेषण: Routh-Hurwitz, Nyquist criterion, gain margin, phase margin।
• आवृत्ति क्षेत्र: Bode plots, polar plots; Root Locus — निर्माण नियम।
• Compensators: Lead, lag, lead-lag; PID controller — Ziegler-Nichols tuning।
• State-Space: State variables, controllability, observability, state feedback।

इकाई 7: संचार प्रणाली (Communication Systems)

• Noise: Thermal noise, shot noise; noise figure, SNR; Friis formula।
• एनालॉग मॉड्यूलेशन: AM (DSB-SC, SSB, VSB), FM/PM — deviation, Carson's rule; superheterodyne receiver।
• डिजिटल मॉड्यूलेशन: PCM (sampling, quantisation, μ-law/A-law encoding); ASK, FSK, BPSK, QPSK, QAM; OFDM basics।
• सूचना सिद्धांत: Shannon entropy, channel capacity; Huffman coding; Hamming codes, convolutional codes।
• Optical Fibre: SMF/MMF, dispersion, attenuation, WDM; SONET/SDH।
• वायरलेस संचार: Path loss, FDMA/TDMA/CDMA, cellular concepts, GSM, 4G LTE; antenna parameters।

इकाई 8: विद्युतचुंबकीय सिद्धांत

• Electrostatics: Coulomb's law, Gauss's law, electric potential, capacitance।
• Magnetostatics: Biot-Savart law, Ampere's law, Faraday's law।
• Maxwell समीकरण: Differential व integral forms, displacement current, plane wave propagation, skin depth, Poynting vector।
• Transmission Lines: Telegrapher's equations, characteristic impedance, VSWR, Smith chart, impedance matching।
• Waveguides: Rectangular waveguide — TE/TM modes, cutoff frequency; cavity resonators।
• Antennas: Hertzian dipole, half-wave dipole, antenna arrays; radiation resistance; RADAR basics।

इकाई 9: इंस्ट्रूमेंटेशन और माप

• माप अवधारणाएं: Accuracy, precision, resolution, sensitivity, linearity, hysteresis; static व dynamic errors।
• DC/AC Instruments: PMMC, moving-iron, electrodynamometer; digital multimeter; DSO oscilloscope।
• Bridge Circuits: Wheatstone, Kelvin, Schering, Maxwell, Hay, Owen bridges।
• Signal Conditioning: ADC types (successive approximation, flash, sigma-delta), DAC (R-2R ladder); sample-and-hold।
• Sensors: RTD, thermistor, thermocouple, strain gauge, LVDT, piezoelectric, Hall sensor।
• Virtual Instrumentation: LabVIEW; DAQ systems; GPIB, RS-232, USB interfaces।

इकाई 10: उन्नत विषय — VLSI और Embedded Systems

• VLSI Design Flow: RTL → synthesis → place-and-route → verification; ASIC vs. FPGA; VHDL/Verilog basics।
• CMOS Fabrication: Photolithography, ion implantation, CVD, metallisation; DRC, LVS।
• CMOS Circuits: Static/dynamic CMOS, transmission gate logic, domino logic; clock distribution; power analysis।
• Embedded Systems: RTOS — tasks, scheduling (RM, EDF), IPC; device drivers; bootloader; JTAG debugging।
• DSP Processors: Harvard architecture, MAC operation, TMS320; FIR/IIR filter implementation।
• उभरते क्षेत्र: IoT (MQTT, edge computing), MEMS (accelerometer, gyroscope), nanoscale CMOS challenges, quantum computing basics।

UGC NET इलेक्ट्रॉनिक साइंस की तैयारी — रणनीति

महत्वपूर्ण पुस्तकें

अक्सर पूछे जाने वाले प्रश्न

क्या B.Sc. इलेक्ट्रॉनिक्स वाले UGC NET दे सकते हैं?

हां, बशर्ते कि आपने संबंधित विषय में M.Sc./M.Tech. न्यूनतम 55% (आरक्षित वर्ग: 50%) अंकों के साथ उत्तीर्ण की हो।

क्या VLSI परीक्षा में आता है?

हां, Unit 10 से 6–8 प्रश्न आते हैं। CMOS logic, FPGA vs. ASIC और basic HDL पर ध्यान दें।

कौन सी यूनिट सबसे अधिक प्रश्न पूछती है?

Analogue Circuits, Digital Electronics और Communication Systems — तीनों से 10–15 प्रश्न अपेक्षित हैं।